| Outra produção |
- Avaliação sensorial de formulações de revestimentos edíveis à base de quitosano. A indústria alimentar procura, de forma constante,
novos métodos e estratégias que permitam o aumento do período de pós-colheita de frutos, sem alteração das suas características
físico-químicas e organoléticas. Essa procura visa, cada vez mais, a utilização de materiais sustentáveis e biodegradáveis,
pelo que tem surgido um elevado interesse na utilização de revestimentos edíveis à base de quitos. 2018. Melgão, Catarina;
Ricardo-Rodrigues, Sara; Nabais, Joao; Agulheiro-Santos, Ana. http://hdl.handle.net/10174/24054.
- Method for promoting in-situ hydrochar porosity in hydrothermal carbonization of almond shells with air activation. In this
work, a new procedure for in situ hydrochar activation during hydrocarbonization of biomass (almond shell) is proposed. This
approach suggests the addition of a controlled oxidizing gas stream (i.e. synthetic air) during the process for different
periods of time, in order to promote the hydrochar porosity. Characterization of prepared materials revealed a noticeable
development of porosity. 2018. Nabais, Joao; Ledesma, Beatriz; Oliovares-Martin, M; Roman, Silvia. http://hdl.handle.net/10174/24035.
https://doi.org/10.1016/j.supflu.2018.04.018
- DIURON, METHOMYL AND MCPA ADSORPTION BY ACTIVATED CARBONS FROM ANGOLAN LIGNOCELLULOSIC PRECURSORS. This work reports the production
of activated carbons from novel precursors, namely wood produced in Angola (Benguela region), and its application to remove
pollutants from aqueous solutions, namely Diuron, Methomyl and MCPA. At present, Angola has a considerable amount of waste
of wood, either from the cutting of trees for residential areas, factory, mining, oil and gas, which are abandoned, suff.
2018. Tchikuala, Emilio; Mourao, paulo; Nabais, Joao. http://hdl.handle.net/10174/24048.
- Estudo do efeito in vitro dos revestimentos edíveis de quitosano com óleos essênciais no controlo de fungos. Uma das principais
causas das perdas pós-colheita em frutos é a infeção por fungos diversos, como Penicillium spp., Rhizopus spp., Botrytis cinérea,
Rhizopus stolonifer, entre outros. O presente trabalho pretende avaliar a capacidade de diferentes revestimentos edíveis controlarem
o crescimento e desenvolvimento in vitro de fungos como Penicillium spp. e Rhizopus spp. Este objectivo está inserido. 2018.
Melgao, Catarina; Ricardo Rodrigues, Sara; Nabais, Joao; Agulheiro-Santos, Ana. http://hdl.handle.net/10174/24056.
- Removal of methomyl by adsorption on activated carbon from aqueous solution. Removal of methomyl by adsorption on activated
carbon from aqueous solution. 2018. Tchikuala, Emilio; Mourao, Paulo; Nabais, Joao. http://hdl.handle.net/10174/24050.
- PlaCarvoes-EC, de plásticos a carvões activados – economia circular nos plásticos agrícolas e urbanos. O projeto PlaCarvões
propõe uma solução de aplicação dos princípios da Economia Circular na cadeia de valor dos plásticos, com a valorização de
resíduos de plásticos (plástico agrícola, plásticos descartáveis e fração não valorizada dos RU) através da produção de carvões
ativados. O carvão ativado tem diversas aplicações nomeadamente a filtragem e captação de poluentes de meios líquidos e gasosos,.
2018. Tita, Barbara; Batista, Teresa; Rocha, Telmo; Cansado, Isabel; Mourao, Paulo; Nabais, Joao; Borges, Catia; Matos, Gilda.
http://hdl.handle.net/10174/24052.
- A forensic experiment: The case of the crime at the cinema.. This paper reports an experimental activity where students have
to carefully analyze the evidence collected at the crime scene, namely fibers and lipstick traces. The fibers are analyzed
by infrared spectroscopy, solubility tests, and optical microscopy, while in turn the lipstick traces are investigated by
thin layer chromatography. Students also have the opportunity to propose alternative method. 2017. Nabais, Joao; Costa, Sara.
http://hdl.handle.net/10174/22298.
- Valorisation of natural fibres from African baobab wates by the production of activated carbons for adsorption of Diuron.
In this work we report the use of a natural fibrous biomass, the African Baobab, as precursor to produce activated carbons
tailored for the removal of a pollutant frequently found in water streams, the herbicide Diuron. The precursors used were
Baobab wastes, namely bark, wood and seeds, collected in Angola. The activated carbons produced by physical activation with
carbon dioxide showed an intere. 2017. Tchikuala, Emilio; Nabais, Joao; Mourao, Paulo. http://hdl.handle.net/10174/22179.
10.1016/j.proeng.2017.07.056
- Os estilos de vida dos jovens adultos com diabetes tipo 1.. A maioria dos jovens apresenta boas competências pessoais e sociais,
considera ter bom suporte social (família, colegas, amigos, equipa de saúde) e refere os benefícios das atividades em grupo
com outros jovens com diabetes. Média de satisfação com a vida 6,6 ±1,7 (escala 0 -10). Os jovens evidenciam bom fracionamento
alimentar (83%), um terço pratica a atividade física recomendada. A adesão à ins. 2017. Nabais, Joao; Serrabulho, Lurdes;
Matos, Margarida; Raposo, Joao. http://hdl.handle.net/10174/22248.
- Perspectivas dos jovens adultos com diabetes tipo 1 em relação à sua vida e à diabetes.. Este estudo permitiu partilhar as
perceções, opiniões e sentimentos dos jovens adultos. Os resultados são similares entre género. Os jovens consideram as atividades
de lazer e o apoio social da família, colegas e amigos muito importantes, no que se refere ao apoio emocional e ao apoio na
diabetes. Consideram as atividades de lazer e a atividade física similar aos amigos sem diabetes, desde que ten. 2017. Nabais,
Joao; Serrabulho, Lurdes; Matos, Margarida; Raposo, Joao. http://hdl.handle.net/10174/22173.
- Produção de carvões ativados a partir de carbonizados obtidos por HTC.. Os carvões ativados (CA) têm sido exaustivamente estudados
durante o último século. A razão deste interesse deve-se à alargada gama de aplicabilidade destes materiais, desde a indústria
ou tratamento de águas até à biomédica. Atualmente tem-se assistido a uma maior diversificação de técnicas de produção com
a finalidade de especialização de cada material. Uma desses técnicas é a utilização da carb. 2017. Nabais, Joao; Laginhas,
Carlos; Titirici, Magdalena. http://hdl.handle.net/10174/22152.
- Perspectives of young adults with type 1 diabetes relating to their life and to diabetes. Satisfaction with life is 6.6 ±1.7
and the several important factors in life vary from 7.2 ±1.8 (diabetes management capacity) to 9.1 ±1.4 (family), in a scale
0-10. Most of young adults show good adherence to dietary intake (83%), insulin therapy (83%) and glucose monitoring (73%),
but only one third practice recommended physical activity. We verified positive statistically significant correlatio. 2017.
Nabais, Joao; Serrabulho, Lurdes; Raposo, Joao; Matos, M.G.. http://hdl.handle.net/10174/22229.
- Activated carbons from Angolan woods for the adsorption of MCPA and Diuron. Carbon materials, and in particular activated
carbon (ACs), are currently one of the most relevant and fundamental adsorbent materials in many areas of human activity,
such as medical applications, gas separation and storage, removal of pollutants and odours and catalysis [1,2]. Angola is
experiencing a considerable amount of wood wastes, which is the consequence of cutting down the trees for the. 2017. Nabais,
Joao; Mourao, Paulo; Tchikuala, Emilio. http://hdl.handle.net/10174/22172.
- Lifestyles and health behaviours of young adults with type 1 diabetes in Portugal. 2017. Participants reported satisfaction
with life as 6.6 ±1.7 (scale 0-10). Most of young adults show good adherence to dietary intake (83%), insulin therapy (83%)
and glucose monitoring (73%), but only one third practice recommended physical activity. We verified positive statistically
significant correlation between adherence to nutrition, insulin therapy and glucose monitoring. Youngsters present 8.. 2017.
Nabais, Joao; Serrabulho, Lurdes; Raposo, Joao; Paiva, Ana; Matos, Margarida; Matos, M.G.. http://hdl.handle.net/10174/22243.
- Desperdícios das Njiliti e Embondeiro na obtenção de carvões ativados.. Este trabalho apresenta os resultados da produção
de adsorventes de carbono a partir de precursores de origem lenhocelulósica, provenientes de madeiras angolanas. Os resultados
mostram que com diferentes precursores surgem algumas diferenças, sugerindo que reagem de forma distinta à ativação com CO2.
Na figura 1 apresentam-se, como exemplo, uma isotérmica de adsorção de nitrogénio a 77 K determina. 2017. Nabais, Joao; Mourao,
Paulo; Tchikuala, Emilio. http://hdl.handle.net/10174/22167.
- . Surface interactions during the removal of emerging contaminants by hydrochar based adsorbents from biomass. This work investigates
the capability of the activated hydrochars (HC) described in ref. [3] as adsorbents of two emergent contaminants, namely fluoxetine
and nicotinic acid, in aqueous solution. Provided the structural differences between these two compounds, this study was aimed
to elucidate how the dissimilar surface characteristics of the adsorbents might influence their adsorption process mec. 2017.
Nabais, Joao; Roman, Silvia; Ledesma, Beatriz; Laginhas, Carlos; Titirici, Magdalena. http://hdl.handle.net/10174/22174.
- Activated carbons from MDF and PB wood composites – powder and monoliths forms. Activated carbons (ACs) have been one of the
most important materials used all over the world for many years and they are nowadays still one of the most relevant materials
in the adsorption field. These adsorbent materials play a crucial role in our society because of its multiple applications
in diverse areas such as food and beverage, health, gas separation and catalysis.. Aacademic and industri. 2017. Nabais, Joao;
Mourao, Paulo; Cansado, Isabel; Carrott, Manuela; Gomes, Jose; Carrott, Peter. http://hdl.handle.net/10174/22130.
- Adsorção de metformina em carvões activados preparados por carbonização hidrotermica seguida de activação. O processo de carbonização
hidrotérmica pode ser considerado um processo amigo do ambiente para preparar materiais de carbono com propriedades especificas,
tais como estrutura regular e química superficial rica, desenvolvidas para determinadas aplicações. Este processo é simples
de executar e pelo facto de usar temperaturas moderadas e não usar solventes nem gases tem um saldo ambiental positivo q.
2017. Nabais, Joao; Laginhas, Carlos; Titirici, Magdalena. http://hdl.handle.net/10174/22171.
- Activated carbons with high nitrogen content by a combination of hydrothermal carbonization with activation. This paper reports
the production of carbons materials with a nitrogen content around 8%(w/w) and a well-developed porous structure, with BET
surface area and pore volume up to 2130 m2 g-1 and 1.12 cm3 g-1, respectively, produced by a combination of hydrothermal carbonization,
an environmental friendly method in the production of sustainable tunable carbon materials, with traditional activation me.
2016. Nabais, Joao; Laginhas, Carlos; Titirici, Maria Magdalena. http://www.sciencedirect.com/science/article/pii/S138718111500712X.
http://dx.doi.org/10.1016/j.micromeso.2015.12.047
- Carbon Materials Research in Évora. An overview is presented of the work involving carbon materials which has been carried
out in Évora by the Surface and Materials Chemistry Group. Current active interests related to the synthesis or preparation
and surface modification of carbon materials, studies of gas phase and liquid phase applications and fundamental studies of
adsorption, are highlighted.. 2016. Carrott, Peter; Ribeiro Carrott, Manuela; Valente Nabais, João; Cansado, Isabel; Mourão,
Paulo. http://www.gecarbon.org/Boletines/Boletin/BoletinGEC_039.pdf.
- Metformin adsorption onto activated carbons prepared by hydrothermal carbonization and activation. The hydrothermal carbonization
can be considered an environmental friendly process for the production of carbon materials with tailored properties, such
as regular porous structure and specific surface chemistry. This process is easy to perform and uses mild temperatures without
the use of solvents or gases, which results in a positive environmental balance when compared with the usual pyrolysis p.
2016. Laginhas, Carlos; Nabais, Joao; Titirici, Maria Magdalena. http://hdl.handle.net/10174/19675.
- MDF and PB composites wastes used in the production of activated carbons by physical activation. O desenvolvimento de materiais
de carbono continua a ser, na atualidade, uma das áreas de grande interesse junto das comunidades científica e industrial
[1]. Especial atenção é dada à valorização de resíduos da indústria, de baixo valor económico, tentando desta forma resolver
problemas de gestão de grandes quantidades de desperdícios [2]. De especial relevo destacamos os resíduos potencialmente p.
2016. Gomes, Jose; Mourao, Paulo; Cansado, Isabel; Nabais, Joao; Carrott, Peter; Ribeiro Carrott, Manuela. http://hdl.handle.net/10174/19689.
- Aplicação de carvões activados de precursors lenhocelulósicos de origem Angolana na remoção de diuron.. As questões ambientais
e de saúde pública estão cada vez mais presentes na agenda internacional. Em particular as consequências indesejadas da utilização
de pesticidas na agricultura, em países em desenvolvimento, são um dos tópicos de maior atenção tanto ao nível político, social
como científico [1]. Entre as técnicas mais utilizadas para a redução ou remoção destes poluentes a partir de águas co. 2016.
Tchikuala, Emilio; Mourao, Paulo; Nabais, Joao. http://hdl.handle.net/10174/19615.
- Anxiety, stress and depression in young adults with type 1 Diabetes. Introdução: A vida dos jovens adultos com diabetes tipo
1 (DM1) tem muitas exigências e as consequências psicológicas da adesão contínua aos aspetos do tratamento pode afetar a qualidade
de vida. Objetivos: Conhecer o suporte social, satisfação com a vida, ansiedade, stresse e depressão nos jovens adultos com
DM1. Material e Métodos: Estudo quantitativo realizado com 278 jovens adultos com DM1 (18. 2016. Lurdes, Serrabulho; Margarida,
Matos; Joao, Raposo; Joao, Nabais. http://hdl.handle.net/10174/19685.
- Removal of poluttants by activated carbons made from wood produced in Angola. This work reports the production of activated
carbons from novel precursors, namely wood produced in Angola (Benguela region), and its application to remove pollutants
from aqueous solutions, namely an herbicide with a broad use in agriculture: Diuron (3- (3 4-dichlorophenyl)-1 1-dimethylurea)..
2015. Nabais, Joao; Mourao, Paulo; Tchikuala, Emílio. http://hdl.handle.net/10174/17427.
- Perspetivas de Jovens Adultos com Diabetes Tipo 1 Sobre a Sua Vida e a Diabetes. Introdução As constantes mudanças sociais,
ocupacionais, familiares e emocionais na vida dos jovens adultos com diabetes tipo 1 podem afetar a adesão ao tratamento da
diabetes e a qualidade de vida dos jovens. Objectivo Conhecer as perceções e opiniões dos jovens adultos com diabetes tipo
1 em relação à sua vida e à diabetes. Métodos Estudo qualitativo com a metodologia dos grupos focais. Particip. 2015. Nabais,
Joao; Serrabulho, Lurdes; Gaspar de Matos, Margarida; Raposo, Joao. http://hdl.handle.net/10174/17463.
- A EDUCAÇÃO PARA A SAÚDE NOS JOVENS COM DIABETES TIPO 1. -As mudanças sociais, ocupacionais, familiares e emocionais na vida
dos jovens com diabetes tipo 1 podem afetar a adesão ao tratamento e a sua qualidade de vida. Uma das ferramentas mais úteis,
e que poderá constituir uma importante mais-valia para ultrapassar estas dificuldades, é a educação para a saúde providenciada
pela equipa multidisciplinar que acompanha os jovens.O objetivo deste artigo é. 2015. Nabais, Joao; Serrabulho, Lurdes; Gaspar
de Matos, Margarida; Raposo, Joao. http://hdl.handle.net/10174/17465.
http://dx.doi.org/10.15309/15psd160208
- “Hydrothermal carbonization – a route for new adsorptive materials. Production and chracterization. The present work reports
the use of fructose and chitosan as precursors for the production of carbon materials by HTC, which were subsequently activated
to produce activated carbons (AC). Selected samples were used to study the adsorption of metformin from simulated gastric
and intestinal fluids.. 2014. Laginhas, Carlos; Nabais, Joao; Titirici, Maria. http://hdl.handle.net/10174/13177.
- LIFESTYLES AND HEALTH BEHAVIOURS OF YOUNG ADULTS WITH TYPE 1 DIABETES IN PORTUGAL. Background: Adherence to diabetes management
and the quality of life of young adults with type 1 diabetes can be affected by the several changes occurring during emerging
adulthood: social, occupational, familiar and emotional. Aims: Evaluation of lifestyles, health behaviours, treatment adherence
and social support of young adults with type 1 diabetes. Participants: 278 young adults with type 1 d. 2014. Nabais, Joao;
Serrabulho, Lurdes; Gaspar de Matos, Margarida; Raposo, Joao. http://hdl.handle.net/10174/13163.
- Competências pessoais e sociais e representações sobre a diabetes dos jovens adultos com diabetes tipo 1. A maioria dos jovens
apresenta boas competências pessoais e sociais e bom suporte social. Média de satisfação com a vida 6,6 ±1,7. A maioria dos
jovens (64 a 99,6%) manifestou concordar com as representações positivas sobre a diabetes. Na análise fatorial encontraram-se
2 fatores, que explicam 49% da variância total: instrumentais e recursos (34%), perspetivas de vida (15%). Conclusões Apesar
das. 2014. Nabais, Joao; Serrabulho, Lurdes; Gaspar de Matos, Margarida; Raposo, Joao. http://www.nursing.pt.
- Utilização de desperdícios de madeiras angolanas na produção de carvões activados. Pela primeira vez, apresentam-se os resultados
da produção de adsorventes de carbono a partir de precursores de origem lenhocelulósica, proveniente de madeiras angolanas.
Os resultados obtidos com diferentes precursores apresentam algumas diferenças, sugerindo que reagem de forma distinta à ativação
com CO2. Os CAs produzidos são predominantemente microporosos mas com diferenças estruturais e da q. 2014. Tchikuala, Emilio;
Mourão, Paulo; Nabais, Joao; Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/13178.
- Aplicação de desperdícios de madeira na produção carvões ativados. Utilização de compositos de madeira, produzidos de desperdicios
de madeira para a produção de carvões activados e sua caracterização.. 2014. Mourao, Paulo; Cansado, Isabel; Nabais, Joao;
Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/13174.
- Produção e caracterização de carvões ativados a partir de resíduos da torrefação de café. Utilização de residuos da industria
do café para a produção de carvões activados por activação fisica e quimica.. 2014. Jesus, Agostinho; Mourão, Paulo; Nabais,
Joao; Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/13190.
- A Adaptação Psicológica à Diabetes dos Jovens Adultos com Diabetes Tipo 1. Introduction: Quality of life of young adults can
be affected by the social, occupational, familiar and emotional changes. Aims: Evaluation of life satisfaction, social support,
treatment adherence and psychological adaptation of young adults with type 1 diabetes. Methods: Quantitative study with questionnaires
Àlled by 278 young adults with type 1 diabetes (18-35 years). Results: Participants con. 2014. Nabais, Joao; Serrabulho, Lurdes;
Gaspar de Matos, Margarida; Raposo, Joao. http://hdl.handle.net/10174/13156.
- Carvões ativados a partir de resíduos da torrefação de café. O trabalho aqui apresentado teve como objectivo a produção de
CAs a partir de desperdícios de torrefação de café e na sua aplicação para remoção de poluentes. A produção dos CAs envolveu
os processos de ativação física com dióxido de carbono e ativação química, por impregnação, com ácido fosfórico e hidróxido
de potássio.. 2014. Jesus, Agostinho; Mourão, Paulo; Nabais, Joao. http://hdl.handle.net/10174/13189.
- A satisfac¸ ão com a vida e a adesão ao tratamento da diabetes dos jovens adultos com diabetes tipo 1. Introduction: Nowadays,
the life satisfaction and the adherence to diabetes management tasks of young adults with type 1 diabetes can be increasingly
affectedby the change and instability at several levels, throughout early adulthood, namely social, occupational, familiar
and emotional. Aims: The objectives targeted the evaluation of lifestyles and health behaviours, social support, satisfaction
w. 2014. Nabais, Joao; Serrabulho, Lurdes; Gaspar de Matos, Margarida; Raposo, Joao. http://hdl.handle.net/10174/13153.
- Desperdícios de madeiras angolanas como precursores na produção de carvões activados. Os desperdícios de algumas madeiras,
entre elas, Njilitie e Embondeiro, foram submetidos a carbonização e ativação física com dióxido de carbono. A caracterização
do precursor e dos adsorventes obtidos, envolveu analise termogravimétrica, porosimetria de mercúrio, adsorção de nitrogénio
a 77K, difracção de raios X, análise elementar, FTIR e determinação do ponto de carga zero.. 2014. Tchikuala, Emilio; Mourão,
Paulo; Nabais, Joao. http://hdl.handle.net/10174/13176.
- Preparation of activated carbons from MDF and PB for application in environmental protection. Produção de carvões activados
a partir de MDF e PB por activação fisica e sua utilização para despoluição de águas.. 2014. Cansado, Isabel; Mourão, Paulo;
Almodovar, Vitor; Gomes, Jose; Nabais, Joao; Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/13175.
- Produção e aplicação de carvões activados a partir de compósitos de madeira – o caso do corante azul de metileno. Utilização
de desperdicios de madeira para a produção de carvões activados por activação com dióxido de carbono. Caracterização dos materiais..
2014. Gomes, Jose; Azaruja, Beatriz; Mourao, Paulo; Cansado, Isabel; Nabais, Joao; Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/13180.
- Produção de materiais de carbono a partir de carbonização hidrotérmica. No presente trabalho é reportado a produção e caracterização
de carvões activados por um processo de carbonização hidrotérmia a partir de açucares simples e complexos.. 2013. Laginhas,
Carlos; Valente Nabais, Joao; Carrott, Peter; Ribeiro Carrott, Manuela. http://hdl.handle.net/10174/9867.
- Health and Lifestyles in Young Adults with Type 1 Diabetes. The social, occupational, familiar and emotional changes during
emerging adulthood, can affect adherence to diabetes management tasks and quality of life of young adults with type 1 diabetes.
Aims The objectives consisted on the evaluation of behaviours and lifestyles, psychological adaptation and social support
of young adults with type 1 diabetes. Methods This research included a quantitative st. 2013. Serrabulho, Lurdes; Valente
Nabais, Joao; Raposo, Joao; Gaspar de Matos, Margarida. http://hdl.handle.net/10174/9620.
- Study of the contributions of non-specific and specific interactions during fluoxetine adsorption onto activated carbons.
The adsorption of fluoxetine onto activated carbons (ACs) prepared from almond tree pruning by steam and CO2 activation under
different temperature conditions (650– 9508C), was studied. In both series increasing the temperature caused an increase in
the BET apparent surface area, yielding ACs with SBET up to 870 and 710m2 g 1 after steam and CO2 activation, respectively.
Also, a slight widening of. 2012. Valente Nabais, Joao; Roman, Silvia; Gonzalez, Juan; Garcia, Carmen; Ortiz, Angel. http://hdl.handle.net/10174/7006.
10.1002/clen.201100009
- IN VITRO AND IN VIVO REMOVAL OF ORAL ANTIDIABETIC AGENTS (METFORMIN) USING ACTIVATED CARBONS. Diabetes is the most worldwide
common chronic disease, according the International Diabetes Federation [1], more than 32 million citizens living in the European
Union have diabetes, representing nearly 10% of the population, to which we should add equal number of people suffering from
impaired glucose tolerance. Diabetes prevalence is growing at alarming rate worldwide, being of particular relevan. 2012.
Valente Nabais, Joao; Galacho, Cristina; Galego, Angela; Costa, Ana; Antunes, Celia; Capela e Silva, Fernando. http://hdl.handle.net/10174/7005.
- Propriedades estruturais e estabilidade hidrotérmica de titanosilicatos do tipo SBA-15 com elevado teor de Ti. Neste trabalho
apresentam-se os resultados da caracterização textural e da estabilidade estrutural de materiais mesoporosos ordenados, do
tipo SBA-15, com elevado teor de titânio, que foram preparados por um método de síntese direta, por via hidrotérmica, designado
por híbrido dado que se fundamentou nos procedimentos de síntese previamente estabelecidos na literatura.. 2012. Velho, Filipe;
Galacho, Cristina; Carrott, Manuela; Carrott, Peter; Nabais, João. http://hdl.handle.net/10174/6465.
- HYDROTHERMAL CARBONIZATION AS AN EFFECTIVE WAY OF DENSIFYING THE ENERGY CONTENT OF BIOMASS. Hydrothermal carbonization processes
were studied under different conditions using two different biomass materials: walnut shell and sunflower stem. Coalification
under mild conditions was promoted with the aim of increasing the calorific value of the solid hydrochar. Hydrocarbonization
processes brought up an increase on the heating value of the materials up to 28.9 and 29.3 MJ kg-1, for sunflowe. 2012. Valente
Nabais, Joao; Roman, Silvia; Laginhas, Carlos; Ledesma, Beatriz; Gonzalez, Juan. http://hdl.handle.net/10174/7007.
10.1016/j.fuproc.2011.11.009
- PRODUCTION OF CARBON MATERIALS BY CONJUNCTION OF HYDROTHERMAL AND ACTIVATION PROCESSES. Activated Carbons (AC) are traditionally
produced by chemical or physical activation processes, frequently using biomass materials as precursors [1]. These procedures
can be modified in order to create particular surface characteristics (both textural and chemical), so that the adsorption
of a given organic or inorganic compound is optimized. Recently, the use of hydrothermal carbonization process. 2012. Valente
Nabais, Joao; Laginhas, Carlos; Carrott, Peter; Ribeiro Carrott, Manuela; Titirici, Magdalena; Roman, Silvia. http://hdl.handle.net/10174/7003.
- Removal of amitriptyline from aqueous media using activated carbons. This paper reports the removal of amitriptyline, a widely
used tricyclic anti-depressant, from aqueous solutions by six activated carbons produced from cork, coffee endocarp and eucalyptus
pulp. The results of this study showed that samples from cork and eucalyptus pulp, activated at 800 °C, exhibited the highest
adsorption capacity of 120 mg/g and 110 mg/g, respectively. Samples produced from cof. 2012. Valente Nabais, Joao; Ledesma,
Beatriz; Laginhas, Carlos; Nabais, J.M.V.; Ledesma, B.; Laginhas, C.. http://hdl.handle.net/10174/7017.
10.1260/0263-6174.30.3.255
- Production and characterization of activated carbons made from sunflower stems. Activated carbons (ACs) are artificial materials,
prepared from natural or synthetic precursors that are worldwide extensively used. The ACs main characteristics are the noticeable
adsorption capabilities provided by the highly developed porous structure and the rich surface chemistry. Because of their
versatility and properties the final material can be tailored to have specific properties suitab. 2012. Valente Nabais, Joao;
Laginhas, Carlos; Carrott, Peter; Ribeiro Carrott, Manuela. http://hdl.handle.net/10174/7019.
- Hydrothermal carbonization of biomass-an effective method of increase its calorific value. Estudo da influencia da carbonização
hidrotermica na valorização energética. 2011. Roman, Silvia; Nabais, Joao; Laginhas, Carlos. http://hdl.handle.net/10174/3881.
- In vivo adsorption study of fluoxetine using carbon materials,. The in vivo adsorption of fluoxetine by a commercial activated
carbon and a laboratory prepared activated carbon fibre were studied. The results showthat the carbon materials tested are
not toxic toWistar rats and both materials had a high efficacy in the in vivo adsorption of fluoxetine preventing toxicity
of the drug overdose administered to the animals.. 2011. Nabais, Joao; Tinoco, Teresa; Morais, Julio. http://hdl.handle.net/10174/3787.
- Uptake of amitrypline onto activated carbons in aqueous and in vitro conditions.. Uptake of amitrypline onto activated carbons
in aqueous and in vitro conditions.. 2011. Ledesma, Beatriz; Nabais, Joao; Laginhas, Carlos. http://hdl.handle.net/10174/3808.
- Structural properties of Ti-SBA-15 mesoporous materials synthesised by a new “hibrid” method up to high titanium content,.
Structural properties of Ti-SBA-15 mesoporous materials synthesised by a new “hibrid” method up to high titanium content,.
2011. Galacho, Cristina; Velho, Filipe; Carrott, Peter; Ribeiro carrott, Manuela; Nabais, Joao. http://hdl.handle.net/10174/3857.
- Characterization of metformin/functional groups associates in aqueous system.. Characterization of metformin/functional groups
associates in aqueous system.. 2011. Herdes, Carmelo; Nabais, Joao. http://hdl.handle.net/10174/3876.
- Uso de carvões activados para remoção de metformina e paracetamol em fase aquosa. Estudo de aplicações ambientais para amostras
de carvoes activados. 2011. Galego, Angela; Pinheiro, sandra; Galacho, Cristina; Nabais, Joao; Laginhas, Carlos; Carrott,
Peter; Ribeiro Carrott, Manuela. http://hdl.handle.net/10174/3884.
- Development of Carbon Materials from Natural Products for Environmental Applications. Estudo da aplicação de carvões activados
na despoluição de águas. 2011. Nabais, Joao; Laginhas, Carlos; Carrott, Peter; Ribeiro Carrott, Manuela; Roman, Silvia; Galacho,
Cristina. http://hdl.handle.net/10174/3880.
- FTIR Black Toners Analysis: ATR vs Diamond Cell. FTIR Black Toners Analysis: ATR vs Diamond Cell. 2011. Assis, Ana; Barbosa,
Fatima; Custodio, Ana; Tropecelo, Pedro; Nabais, Joao. http://hdl.handle.net/10174/3896.
- Diamond Cell FourrierTrnsform Infrared Spectroscopy Transmitance Analysis of Black Toners on Questioned Document. Diamond
Cell FourrierTrnsform Infrared Spectroscopy Transmitance Analysis of Black Toners on Questioned Document. 2011. Assis, Ana;
Barbosa, Fatima; Custodio, Ana; Tropecelo, Pedro; Nabais, Joao. http://hdl.handle.net/10174/4443.
- To wash or not to wash:that’s the question.. Estudo da influencia da lavagem de carvões activados em processos pós produção..
2011. Nabais, Joao; Laginhas, Carlos; Ribeiro Carrott, Manuela; Carrott, Peter. http://hdl.handle.net/10174/3870.
- Adsorção de paracetamol em carvões activados. Adsorção de paracetamol em carvões activados. 2011. Pinheiro, Sandra; Galacho,
Cristina; Nabais, Joao; Laginhas, Carlos; Ribeiro Carrott, Manuela; Carrott, Peter; Galego, Angela. http://hdl.handle.net/10174/3866.
- A vida para alem da morte dos produtos agrícolas.. EStudo da utilização de vários residuos agricolas para a produção de carvões
activados. 2011. Nabais, Joao; Laginhas, Carlos; Carrott, Peter; Ribeiro carrott, Manuela; Roman, Silvia. http://hdl.handle.net/10174/4462.
- Black Toners on Questioned Documents. Estudo de toners pretos na prespectiva da ciencia forense. 2011. Assis, Ana; Barbosa,
Fatima; Custodio, Ana; Tropecelo, Pedro; Nabais, Joao. http://hdl.handle.net/10174/3911.
- Influence of hydrocarbonization conditions on the porosity of derived carbon dioxide activated carbons. Influence of hydrocarbonization
conditions on the porosity of derived carbon dioxide activated carbons. 2011. Roman, Silvia; Ledesma, Beatriz; Nabais, Joao;
Laginhas, Carlos. http://hdl.handle.net/10174/3883.
- Estudo da influência da composição de precursores lignocelulosicos nas propriedades adsortivas dos carvões activados produzidos.
Embora existam muitas publicações sobre a produção de carvões activados muito pouco se sabe acerca da relação entre a constituição
dos precursores e as características dos carvões produzidos, nomeadamente no que diz respeito a um dos precursores mais utilizados,
os materiais lenhocelulósicos. Podemos também referir que uma das áreas que mais tem motivado, e que continua intensamente
a motivar, os. 2010. Valente Nabais, Joao; Laginhas, Carlos; Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/6571.
- Materiais do tipo SBA-15 contendo titânio: Síntese, caracterização e avaliação da estabilidade hidrotérmica. Neste trabalho
apresentam-se os estudos de preparação, caracterização e estabilidade hidrotérmica de materiais Ti-SBA15. Para o efeito, desenvolveu-se
um novo método de síntese, processo hidrótermico por via directa, que permitiu a obtenção de materiais com elevado teor de
Ti e de acordo com as razões molares de síntese, Si/Ti, pré-definidas. Os materiais foram caracterizados por DRX e adsorção
de. 2010. Morais, Júlio; Nabais, João; Candeias, António; Teixeira, António; Galacho, Cristina; Teixeira, Jorge. http://hdl.handle.net/10174/6483.
- Actividade Biocida do Óxido de Etileno em Dispositivos Médicos. O óxido de etileno é um agente químico de grande eficiência
no que respeita à esterilização de dispositivos médicos, actuando mesmo em baixas temperaturas o que representa uma vantagem
na esterilização de materiais termossensiveis. Por outro lado, o facto do óxido de etileno ser um agente de esterilização
gasoso favorece a penetração nos mais diversos dispositivos médicos, independentemente da sua. 2010. Morais, Júlio Cruz; Nabais,
João Valente; Candeias, António; Teixeira, António; Galacho, Cristina; Teixeira, Jorge. http://hdl.handle.net/10174/5817.
- Bisfosfonatos Derivados do Indazole: Síntese e Avaliação da Actividade Biológica. Os bisfosfonatos (BPs) são uma classe importante
de fármacos com um largo espectro de aplicações no tratamento de doenças do metabolismo mineral do osso, como a osteoporose,
a doença de Paget e metástases ósseas. Estes compostos caracterizam-se por serem potentes inibidores dos osteoclastos, promovendo
uma diminuição da reabsorção óssea. Recentemente, tem sido estudada a actividade antitumoral dos. 2010. Morais, Júlio Cruz;
Nabais, João Valente; Candeias, António; Teixeira, António; Galacho, Cristina; Teixeira, Jorge. http://hdl.handle.net/10174/5795.
- Fluoxetine adsorption from aqueous solution onto activated carbons. With these premises, this work aimed to prepare ACs from
almond tree pruning by physical activation processes with steam and carbon dioxide, under different temperature conditions.
Selected samples were impregnated with triethylenediamine (TEDA, 5%wt.) by sublimation. The ACs characterization was made
by N2 adsorption at 77 K (AUTOSORB-1, Quantachrome), mercury porosimetry (AUTOPORE 4900 IV, Micro. 2010. Valente Nabais, Joao;
Roman, Silvia; Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/6679.
- Adsorção e Novos Materiais de Carbono para a Redução de Emissões e a Captura de Dióxido de Carbono. Uma das principais fontes
de emissões de CO2 é a queima de carvão ou gás natural em centrais termoeléctricas. Actualmente 3 soluções tecnológicas estão
a ser contempladas para facilitar a captura deste CO2 e todas dependem da separação eficiente de uma mistura de gases, nomeadamente,
CO2/N2, CO2/H2 ou O2/N2. Adsorção em sólidos microporosos, como peneiros moleculares de carbono, é habitualmente ut. 2010.
Carrott, Peter; Nabais, João; Cansado, Isabel; Mourão, Paulo; Suhas, S; Conceição, Filipe; Marques, Luísa; Carrott, Manuela.
http://hdl.handle.net/10174/6160.
- Characterization of the Surface of Activated Carbons Produced from Tire Residues. The surface characterisation of new activated
carbons produced from tire residues by activation with carbon dioxide was studied. The activated carbons produced were mainly
basic with point of zero charge values above 8.8. The main surface functional groups identified by FTIR were ether, quinones,
lactones, ketones, hydroxyls (free and phenol) and pyrones. The XRD analysis shows that the materials. 2010. Valente Nabais,
Joao; Laginhas, Carlos; Carrott, Peter; Carrott, Manuela; Galacho, Cristina; Crespo Amoros, Jose; Nadal Gisbert, Antonio;
et al. http://hdl.handle.net/10174/5813.
10.4028/www.scientific.net/msf.636-637.1383
- Simulations of phenol adsorption on activated carbon and carbon black. We use grand canonical Monte Carlo and molecular dynamics
simulations to study the adsorption of phenol on carbon materials. Activated carbon is modelled by pore size distributions
based on DFT methods; carbon black is represented by a single carbon slab with varying percentages of surface atoms removed.
GCMC results for the adsorption from the corresponding gas phase gave reasonable agreement wit. 2010. Prosenjak, Claudia;
Valente Nabais, Joao; Laginhas, Carlos; Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/5812.
- Porosity Development in Activated Carbons Prepared from Walnut Shells by Carbon Dioxide or Steam Activation. The influence
of carbon dioxide and steam as activating agents on the porosity development of activated carbons produced from walnut shells
was investigated. The study was made covering a wide range of burnoff (12-76%) and employing different temperatures and times:
in carbon dioxide activation, 850 °C varying the activation time in the range 60-480 min, and in steam activation, 700, 850,
and 900. 2009. Roman, Silvia; Gonzalez, Jose; Garcia, Carmen; Valente Nabais, Joao; Ortiz, Antonio. http://hdl.handle.net/10174/5820.
10.1021/ie801848x
- Pollutants removal onto novel activated carbons made from lignocellulosic precursors. The adsorption of phenol and mercury
from dilute aqueous solutions onto new activated carbons was studied. These included activated carbons produced from novel
precursors, namely rapeseed, vine shoots and kenaf, and samples oxidised with nitric acid in liquid phase. The results have
shown the significant potential of rapeseed, vine shoots and kenaf for the activated carbon production. The activate. 2009.
Valente Nabais, Joao; Laginhas, Carlos; Carrott, Manuela; Carrott, Peter; Gomes, Jose; Suhas, Suhas; Ramires, Ana; Roman,
Silvia. http://hdl.handle.net/10174/6573.
- Production of Activated Carbons from Coffee Endocarp by CO2 and Steam Activation. In this work the use of coffee endocarp
as precursor for the production of activated carbons by steam and CO2 was studied. Activation by both methods produces activated
carbons with small external areas and microporous structures having very similar mean pore widths. The activation produces
mainly primary micropores and only a small volume of larger micropores. The CO2 activation leads to samples. 2008. Nabais,
Joao; Carrott, Peter; Ribeiro Carrott, Manuela; Nunes, Pedro; Macias Garcia, Antonio; Diaz-Diez, Maria. http://hdl.handle.net/10174/2534.
10.1016/j.fuproc.2007.11.030
- Development of Monolithic Materials with and without a Binder with Carbon Molecular Sieving Properties. In this work we studied
the production of activated carbon fibres in monolith shape from a commercial textile acrylic fibre. The monoliths were produced
with and without a binder. The binders tested were phenolic resin, polystyrene, polymethylmethacrylate and clay. We also tested
the influence of using a solvent. The SEM analysis indicates that the monoliths are made of filaments that can be consi. 2008.
Nabais, Joao; Carrott, Peter; Ribeiro Carrott, Manuela; Galacho, Cristina; Padre-Eterno, Ana; J.M. Valente Nabais; A. Padre-Eterno;
et al. http://hdl.handle.net/10174/2523.
10.4028/www.scientific.net/msf.587-588.805
- Influence of preparation conditions on the textural and chemical properties of activated carbons from a novel biomass precursor:
the coffee endocarp. In this work a novel biomass precursor for the production of activated carbons (AC) was studied. The
lignocellulosic material used as precursor is the coffee bean endocarp, which constitutes an industrial residue from the Portuguese
coffee industry. Activation by carbon dioxide and potassium hydroxide produces activated carbons with small external areas
and pore volumes up to 0.22 and 0.43 cm3 g1,. 2008. Valente Nabais, João; Carrott, Peter; Ribeiro Carrott, Manuela; Luz, Vânia;
Ortiz, Angel. http://hdl.handle.net/10174/1412.
- Adsorption of chromophore chemical species present in a real industrial effluent using activated carbons. Four commercial
activated carbons with different shapes, origins and characteristics (Norit Azo, Merck granular, DCL GDC 753 and X2MH 6/8)
were tested for the removal of the chromophore compounds present in a pulp mill effluent using batch and dynamic trials. The
colour removal achieved in the batch trials was within the range 30-95%. We can also conclude that the iodine index can be
used as a gui. 2008. Nabais, Joao; Carrott, Peter; Ribeiro Carrott, Manuela; Marques, Liliana. http://hdl.handle.net/10174/2524.
- Influence of Preparation Conditions in the Textural and Chemical Properties of Activated Carbons from a Novel Biomass Precursor:
the Coffee Endocarp. In this work a novel biomass precursor for the production of activated carbons (AC) was studied. The
lignocellulosic material used as precursor is the coffee bean endocarp, which constitutes an industrial residue from the Portuguese
coffee industry. Activation by carbon dioxide and potassium hydroxide produces activated carbons with small external areas
and pore volumes up to 0.22 and 0.43 cm3 g-1. 2008. Nabais, Joao; Carrott, Peter; Ribeiro Carrott, Manuela; Luz, Vania; Ortiz,
Angel. http://hdl.handle.net/10174/2633.
10.1016/j.biortech.2007.12.068
- Ordered mesoporous titanosilicate materials prepared at room temperature. Mesoporous titanosilicates were directly synthesised
at ambient temperature and pressure, considering a wide range of metal content (0.01¿Ti/Si¿0.5) and using cationic surfactants
of different alkyl chain length. It is shown that the use of tetradecyl-, hexadecyl- and octadecyltrimethylammonium bromide
as structure-directing agents provide higher quality Ti-MCM-41 materials, than those prepared wi. 2008. Nabais, Joao; Galacho,
Cristina; Carrott, Peter; Ribeiro Carrott, Manuela. http://hdl.handle.net/10174/2628.
- Characterisation of surface ionisation and adsorption of phenol and 4-nitrophenol on non-porous carbon blacks. The adsorption
of phenol and 4-nitrophenol from aqueous solutions by carbon blacks was studied. Particular attention was paid to the characterisation
of the surface chemistry and ionisation of the carbon blacks by use of a simple carbon surface ionisation model, as well as
the use of a normalised form of the Freundlich equation for the analysis of the adsorption isotherms. The results indicated
th. 2008. Carrott, Peter; Carrott, Manuela; Vale, Tania; Valente Nabais, Joao; Mourao, Paulo; Carrott, P.J.M.; Ribeiro Carrott,
M.M.L.; et al. http://hdl.handle.net/10174/5878.
10.1260/026361708788708252
- Prevalência da Diabetes Mellitus numa população aleatória da área urbana de Évora: caracterização de marcadores bioquímicos.
The objective of this research was to determine the prevalence of diabetes and impaired fasting glucose (IFG) among patients
of a certified private Laboratory of Clinical Analyses of Évora (Portugal) and the characterization of the standard biochemistry
parameters associated to the diagnostic or the evaluation of diabetes mellitus. We selected a sample of 7440 adults (age =
20 years) tested for fa. 2008. Nabais, Joao; Martins, Rosario; Pinto, Sara; Barroca, Maria; Calisto, Fernando; Barroca, M.
Gabriel; Nabais, João; Martins, M. Rosário. http://hdl.handle.net/10174/2521.
- PEEK: an excellent precursor for activated carbon production for high temperature application. Os carvões activados (AC) têm
sido preparados a partir de uma diversidade de precursores, por activação física e química a diferentes temperaturas, permitindo
a obtenção de adsorventes com volumes microporosos, tamanho médio de poros e química superficial muito diversificados. A optimização
de algumas das suas propriedades reporta-se quase sempre a um aumento do volume microporoso ou a um ajuste d. 2008. Cansado,
Isabel; Ribeiro Carrott, Manuela; Carrott, Peter; Nabais, João; Gonçalves, Filipa; Cansado, I.P.P.; Gonçalves, F.A.M.M.; et
al. http://hdl.handle.net/10174/1230.
10.1016/j.fuproc.2008.09.001
- Armazenamento Electroquímico de Energia Eléctrica na Interface de Fibras de Carbono Activadas/H2SO4 (aq): Novos Materiais
de Eléctrodo para Super-Condensadores. In this work we report the development of low cost electrodes with potential to be
used in supercapacitors using industrial residues and acrylic fibres.. 2008. Teixeira, Jorge; Valente Nabais, Joao; Carrott,
Peter; Carrott, Manuela; Almeida, Ines. http://hdl.handle.net/10174/6577.
- Development of Electrodes with Nanostructured Porosity and Controlled Chemical Properties to be Used as Electrochemical Capacitors.
Development of Electrodes with Nanostructured Porosity and Controlled Chemical Properties to be Used as Electrochemical Capacitors.
A new bindless method of producing electrodes is reported.. 2008. Teixeira, Jorge; Almeida, Ines; Valente Nabais, Joao; Carrott,
Peter; Carrott, Manuela. http://hdl.handle.net/10174/6644.
- Desenvolvimento de Carvões Activados a partir de Precursores Naturais. Desenvolvimento de Carvões Activados a partir de Precursores
Naturais. Neste trabalho é mostrado o resultado da preparação de carvões activados a partir de diversos tipos de biomassa..
2008. Valente Nabais, Joao; Carrott, Peter; Carrott, Manuela; Gomes, Jose. http://hdl.handle.net/10174/6618.
- Aproveitamento do endocarpo de café para a produção de carvões activados por activação física. Os carvões activados produzidos
são todos de natureza básica com ponto de carga zero (pcz) entre 9 e 12, tendo-se verificado que a activação com CO2 produz
amostras com maiores valores de pcz quando comparadas com a activação com vapor de água. A densidade de hélio aumenta com
o grau de queima e está compreendida entre os valores 0.97 e 1.34 g/cm3. A caracterização textural foi realizada através d.
2007. Nabais, Joao; Carrott, Peter; Carrott, Manuela Ribeiro; Garcia, Antonio Macias; Diez, Maria Diaz; Nunes, Pedro. http://hdl.handle.net/10174/1047.
- Estudos de adsorção de fluoxetina por carvões activados antes e após modificação química. O estudo cinético realizado demonstrou
que o equilíbrio é rapidamente atingido, na maioria dos casos após 60 minutos de contacto, pelo que se considerou um tempo
óptimo de 120 minutos para realizar os ensaios de adsorção. Os materiais de carbono testados apresentam uma vasta gama de
características com ponto de carga zero entre 3 e 12, área aparente BET (ABET) entre 780 e 2500m2/g e volume poroso. 2007.
Nabais, João; Mouquinho, Ana; Carrott, Peter; Carrot, M. Manuela; Galacho, Cristina. http://hdl.handle.net/10174/1283.
- Utilização de fibras de carbono activadas e carvões activados produzidos a partir de resíduos industriais como supercondensadores.
No trabalho apresentado foram utilizados materiais de carbono preparados em laboratório na forma de monólitos sem o recurso
a aglomerantes, designadamente fibras de carbono activadas (ACF) e carvões activados (AC) de origem distinta. As ACF (amostras
F920, F932, F993) foram produzidas a partir de uma fibra acrílica comercial pela activação do dióxido de carbono a 900ºC durante
tempos variados por. 2007. Valente Nabais, Joao; Teixeira, Jorge; Almeida, Ines; Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/6572.
- Conventional and microwave induced pyrolysis of coffee hulls for the production of a hydrogen rich fuel gas. Um artigo do
Grupo de Química de Superfícies e Materiais http://dx.doi.org/10.1016/j.jaap.2006.08.003. 2007. Domínguez, A; Menéndez, Angel;
Fernández, Y; Pis, JJ; Valente Nabais, João; Carrott, Peter; Ribeiro Carrott, Manuela; et al. http://hdl.handle.net/10174/1386.
10.1016/j.jaap.2006.08.003
- Preparação e caracterização de carvões activados preparados a partir de resíduos da indústria do café”,. Preparação e caracterização
de carvões activados preparados a partir de resíduos da indústria do café.. 2007. Valente Nabais, Joao; Nunes, Pedro; Carrott,
Peter; Carrott, Manuela; Garcia, Antonio; Diaz Diez, Maria. http://hdl.handle.net/10174/6728.
- Caracterização electroquímica de fibres de carbono activadas com potencial aplicação em super-condensadores. Caracterização
electroquímica de fibres de carbono activadas com potencial aplicação em super-condensadores. Estas fibras são produzidas
a partir de residuos industriais e fibras acrilicas.. 2007. Teixeira, Jorge; Valente Nabais, Joao; Almeida, Ines; Carrott,
Peter; Carrott, Manuela. http://hdl.handle.net/10174/6578.
- Production of activated carbon cloth with controlled structure. The production of micro and mesoporous activated carbon cloth
(ACC) from commercial acrylic textile fibres by physical activation with carbon dioxide and the addition of boric acid and
sodium hydrogen phosphate as impregnants is reported. The use of sodium hydrogen phosphate leads to samples with greater mesopore
volume whereas other ACC production conditions studied mainly result in microporous m. 2007. Nabais, Joao; Carrott, Peter;
Ribeiro Carrott, Manuela; Canario, Tiago. http://hdl.handle.net/10174/2520.
- ADSORPTION OF CHROMOPHORE CHEMICAL SPECIES PRESENT IN AN REAL INDUSTRUAL EFFLUENT USING ACTIVATED CARBONS. The use of 5 commercial
activated carbons with different shapes, origins and characteristics (Norit Azo, Merck granular, DCL GDC 753 from Sutcliffe
Speakman (DCL) and X2MH 6/8 from Takeda) were tested for the adsorption of the chromophore compounds present in a pulp mill
effluent using batch and dynamic trials. The colour removal achieved is within the range 30-90%. The highest removal is obtained.
2007. Nabais, Joao; Carrott, Peter; Ribeiro Carrott, Manuela; Marques, Liliana. http://hdl.handle.net/10174/1046.
- Production of Activated Carbon Cloth with Controlled Structure and Porosity from a New Precursor. Um artigo do Grupo de Química
de Superfícies e Materiais http://dx.doi.org/10.1007/s10934-006-9023-0. 2007. Valente Nabais, João; Carrott, Peter; Ribeiro
Carrott, Manuela; Canário, Tiago. http://hdl.handle.net/10174/1398.
10.1007/s10934-006-9023-0
- Electrochemical storage of energy in acrylic activated carbon fibres and activated carbons made from industrial residues.
In this work the application as electrochemical capacitors of novel materials, never tested before for this propose, were
investigated using classic cyclic voltammetry, chrono potentiometry, chrono amperometry and electrochemical impedance spectroscopy.
The tested materials were prepared in our laboratory: a) acrylic activated carbon fibres (ACF) (samples F920, F932, F993)
produced from a commerci. 2007. Nabais, Joao; Carrott, Peter; Carrott, Manuela Ribeiro; Almeida, Ines; Teixeira, Jorge. http://hdl.handle.net/10174/1048.
- Adsorption of Aqueous Mercury(II)Species by Commercial Activated Carbon Fibres with and without Surface Modification. The
adsorption of HgCl2, [HgCl4]2– and Hg2+ onto a series of activated carbon fibres was studied. These included the as-received
commercial activated carbon fibre (K), that obtained after modification via by sulphuric acid oxidation (KAC) and that obtained
after modification by reaction with pentaethylenehexamine (KBAS). The effects of concentration (10–1500 mg/l), solution pH
(1–10) and temperatu. 2007. Nabais, Joao; Carrott, Peter; Ribeiro Carrott, Manuela; Silvestre, Sara; Duran-Valle, Carlos.
http://hdl.handle.net/10174/2632.
- Mercury Removal from Aqueous Solution and Flue Gas by Adsorption on Activated Carbon Fibres. The use of two activated carbon
fibres, one laboratorial sample prepared from a commercial acrylic textile fibre and one commercial sample of Kynol1, as prepared/received
and modified by reaction with powdered sulfur and H2S gas in order to increase the sulfur content were studied for the removal
of mercury from aqueous solution and from flue gases from a fluidized bed combustor. The sulfur introd. 2006. Nabais, Joao;
Carrott, Peter; Ribeiro Carrott, Manuela. http://hdl.handle.net/10174/2629.
10.1016/j.apsusc.2005.11.034
- Adsorção de mercúrio em fibras de carbono activadas. Adsorção de mercúrio em fibras de carbono activadas. Neste trabalho é
mostrada a preparação de fibras de acrbono activadas com e sem modificações para adorver mercurio de soluções aquosas.. 2006.
Valente Nabais, Joao; Silvestre, Sara; Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/6591.
- Production and characterisation of activated carbons made from coffee industry residues. Porous materials are usually heterogeneous
both structurally and energetically. Activated carbon fibres (ACFs) are relatively novel fibrous adsorbents produced for example
from pith, cellulose, lignocellulose, phenol resin and polyacrylonityile (Peebles, 1995; Ryu, 1999). ACFs show important advantages
with respect to conventional activated carbons. Among these advantages it is worth noting their. 2006. Valente Nabais, Joao;
Carrott, Manuela; Carrott, Peter; Luz, vania; Ortiz, Angel. http://hdl.handle.net/10174/6576.
- Activated carbon fibres prepared from kenaf: Influence of the experimental consditions on the morphology and textural properties.
Porous materials are usually heterogeneous both structurally and energetically. Activated carbon fibres (ACFs) are relatively
novel fibrous adsorbents produced for example from pith, cellulose, lignocellulose, phenol resin and polyacrylonityile (Peebles,
1995; Ryu, 1999). ACFs show important advantages with respect to conventional activated carbons. Among these advantages it
is worth noting their. 2006. Valente Nabais, Joao; Carrott, Peter; Carrott, Manuela; Correa, Eduardo. http://hdl.handle.net/10174/6570.
- New Acrylic Monolithic Carbon Molecular Sieves for O2/N2 and CO2/CH4 Separations. The modification of activated carbon fibres
prepared from a commercial textile acrylic fibre into materials with monolithic shape using phenolic resin as binder was studied.
The molecular sieving properties for the gas separations CO2/CH4 and O2/N2 were evaluated from the gas uptake volume and selectivity
at 100 s contact time taken from the kinetic adsorption curves of the individual gases. The p. 2006. Nabais, Joao; Carrott,
Peter; Ribeiro Carrott, Manuela; Padre-Eterno, Ana; Menendez, JA. http://hdl.handle.net/10174/2535.
10.1016/j.carbon.2005.11.005
- Decolourisation of a pulp mill effluent using commercial activated carbons. The decolourisation of industry effluents is a
challenging and fundamental task related to pollution control, mainly in pulp mill and textile industries. The dark colour
of the pulp mill effluent, depending on the river characteristics, can lead to the reduction of the light penetration into
the aquatic environment with the consequent decrease of photosynthesis and aquatic life destruction. Also,. 2006. Valente
Nabais, Joao; Carrott, Peter; Carrott, Manuela; Marques, Lilinana. http://hdl.handle.net/10174/6574.
- Microwave and Conventional Pyrolysis of Coffee Hulls at Different Temperatures for a Hydrogen Rich Gas. Microwave and Conventional
Pyrolysis of Coffee Hulls at Different Temperatures for a Hydrogen Rich Gas. The paper reports the comparison of using a microwave
and a conventional furnace to do the pysolysis of the coffee hulls.. 2006. Menendez, Angel; Fernandez, Yolanda; Dominguez,
Antonio; Pis, Juan; Valente Nabais, Joao; Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/6645.
- “From commercial textile fibres to activated carbon fibres: chemical transformations. The production of activated carbon fibres
from commercial acrylic textile fibres was analysed in order to study the chemical transformations suffered by the precursor
during the process. The thermal degradation of the precursor polymeric chain starts with the cyclisation of the structure
with acetate ion from vinyl acetate acting as a catalyst. The chemical transformations continue with both cycli. 2005. Nabais,
Joao; Carrott, Peter; Ribeiro Carrott, Manuela. http://hdl.handle.net/10174/2536.
- Fibras de carbono activadas produzidas a partir de precursores acrílicos. Neste artigo é efectuada uma revisão sobre as fibras
de carbono activadas (ACF) produzidas a partir de precursores acrílicos abordando vários aspectos relativos à sua produção
e características físicas e químicas. As ACF são uma forma relativamente recente de materiais de carbono que apresentam um
conjunto variado de vantagens em relação a outros materiais de carbono que lhe conferem um enorme pot. 2003. Nabais, Joao;
Carrott, Peter; Ribeiro Carrott, Manuela. http://hdl.handle.net/10174/2509.
- Scanning electron microscopy of activated carbons prepared from commercial acrylic textile fibres. Scanning electron microscopy
has been used to study the variation in surface texture and dimension during carbonisation and activation of three acrylic
textile fibres. The results show that both ordered and disorganised forms of carbon exert a direct influence on the macroscopic
structure of the carbon materials. In addition, the results also show that the presence of small amounts of an inorganic.
2002. Nabais, Joao; Carrott, Peter; Ribeiro Carrott, Manuela; Carrott, P.J.M.; Nabais, J.M.V.; Ribeiro Carrott, M.M.L.; Pajares,
J.A.. http://hdl.handle.net/10174/2519.
10.1016/S0378-3820(02)00085-1
- Preparation of activated carbon fibres from acrylic textiles fibres. Acrylic textile fibres have been used to prepare activated
carbon fibres (ACF). Characterisation by means of elemental analysis, XRD, SEM and low temperature nitrogen adsorption show
that the properties of the acrylic ACF compare favourably with those of non-textile PAN, Kevlar and Nomex ACF. A particularly
interesting, and never previously reported, feature was observed with fibres activated at 9. 2001. Nabais, Joao; Carrott,
Peter; Ribeiro Carrott, Manuela. http://hdl.handle.net/10174/2518.
- Thermal treatments of activated carbon fibres using a microwave furnace. Thermal treatments of activated carbon fibres using
a microwave furnace. 2001. Nabais, Joao; Carrott, Peter; Ribeiro Carrott, Manuela; Carrott, P.J.M.; Nabais, J.M.V.; Ribeiro
Carrott, M.M.L.; Menéndez, J.A.. http://hdl.handle.net/10174/2526.
10.1016/S1387-1811(01)00384-5
- Reference Data for the Adsorption of Benzene on Carbon Materials. The adsorption of benzene at 298 K on carbon blacks and
microporous carbons, including Carbosieve, Takeda molecular sieves, Maxsorb superactivated carbons and an activated charcoal
cloth, has been studied. It is shown that although it is not possible to define a universal standard benzene isotherm, reference
isotherms can be defined and used successfully to determine micropore volumes and external. 2000. Carrott, Peter; Ribeiro
Carrott, Manuela; Cansado, Isabel; Nabais, João. http://hdl.handle.net/10174/1743.
10.1016/S0008-6223(99)00129-3
- A theoretical approach for the description of phenol removal by novel activated carbons. The adsorption of phenol for the
removal of this toxic compound has been investigated in many experimental studies whereas the simulation studies are scarce,
especially comparisons with experimental data. This work aims to give deeper insight into the adsorption of phenol using GCMC
and MD simulation. Carbon black is used as a reference material and comparison with experimental data for the carbon. 2000.
Valente Nabais, Joao; Prosenjak, Claudia; Laginhas, Carlos; Carrott, Peter; Carrott, Manuela. http://hdl.handle.net/10174/6575.
- Improving health of people with diabetes: The ''end of the beginning''. The St. Vincent Declaration Action Programme is one
of the major programmes for the development of quality of care in the European region at the present time, Starting with the
Ist meeting in Saint Vincent, Italy, in 1989, where achievable targets were set for improvement of diabetes outcomes, St,
Vincent has developed into a movement with activities in all the 51 Member States of the European reg. 1997. Nabais, Joao.
http://hdl.handle.net/10174/1070.
- Influence of surface ionization on the adsorption of aqueous zinc species by activated carbons”. surface ionization and adsorption
model is used to simulate the adsorption of zinc species from aqueous solutions of varying pH on a number of different activated
carbons and the results compared with experimental data. In all cases good agreement is obtained between theory and experiment.
It is shown that for most of the carbons the uptake of zinc is due to adsorption of Zn*+ ions on ionized acid. 1997. Nabais,
Joao; Carrott, Peter; Ribeiro Carrott, Manuela. http://hdl.handle.net/10174/2630.
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