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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
25/09/2023 |
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Data da última atualização: |
25/09/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALVARENGA, A. D.; FACURE, M. H. M.; MONTES-SÁNCHEZ, I.; OLIVEIRA, G. O. S.; LANZA, M. R. V.; MERCANTE, L. A.; CORREA, D. S. |
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Afiliação: |
PPG-Biotec, Center for Exact Sciences and Technology, Federal University of Sao Carlos (UFSCar); Department of Chemistry, Center for Exact Sciences and Technology, Federal University of Sao Carlos (UFSCar); Institute of Chemistry of Sao Carlos (IQSC), University of Sao Paulo (USP); Institute of Chemistry of Sao Carlos (IQSC), University of Sao Paulo (USP); Institute of Chemistry of Sao Carlos (IQSC), University of Sao Paulo (USP); Institute of Chemistry, Federal University of Bahia (UFBA); DANIEL SOUZA CORREA, CNPDIA. |
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Título: |
Multifunctional and sustainable soot-modified nanofibrous membrane for adsorption, sensing and hydrogen peroxide electrogeneration. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Cleaner Production, n. 422, 138697, 2023. |
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ISSN: |
0959-6526 |
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DOI: |
https://doi.org/10.1016/j.jclepro.2023.138697 |
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Idioma: |
Inglês |
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Conteúdo: |
The incineration of plastics and biomass is an efficient alternative to reduce the amount of solid waste and is also beneficial for energy production. Soot is one of the main byproducts generated during solid waste incineration, and so far, it has been treated as a pollutant. However, soot is an interesting nanostructured material displaying high specific surface area and chemical reactivity. In this work, soot produced by incomplete burning of plastic materials was combined with polymer nanofibers resulting in a multifunctional membrane explored for pollutant adsorption, sensing of organic pollutants, and in the electrogeneration of hydrogen peroxide. Specifically, soot was immobilized onto polyamide 6 nanofibrous membranes (NFM) produced by solution blow spinning following two different approaches: pre-synthesis and post-synthesis modification, and then the effect of soot chemical activation with NaOH was investigated. The adsorption tests showed that the chemical activation was essential to increase efficiency by improving its hydrophilicity and generation of adsorption sites. The experimental and calculated batch adsorption efficiency towards methylene blue was 94.33 mg/g and 37.71 mg/g, respectively. The adsorption efficiency in the fixed bed was 8.00 mg/g. The functional NFMs maintained their efficiency for at least ten adsorption cycles, increasing their economic viability. Furthermore, the NFMs were applied as flexible and free-standing electrodes for detecting methylene blue with a limit of detection of 2.4 nmol/L. The average per-electrode cost was estimated to be US$0.04. Finally, the NFM also demonstrated the ability to generate H2O2 in situ. Altogether, these results suggest that the immobilization of soot onto nanofibrous membranes is an efficient strategy for developing multifunctional and sustainable materials towards environmental applications. MenosThe incineration of plastics and biomass is an efficient alternative to reduce the amount of solid waste and is also beneficial for energy production. Soot is one of the main byproducts generated during solid waste incineration, and so far, it has been treated as a pollutant. However, soot is an interesting nanostructured material displaying high specific surface area and chemical reactivity. In this work, soot produced by incomplete burning of plastic materials was combined with polymer nanofibers resulting in a multifunctional membrane explored for pollutant adsorption, sensing of organic pollutants, and in the electrogeneration of hydrogen peroxide. Specifically, soot was immobilized onto polyamide 6 nanofibrous membranes (NFM) produced by solution blow spinning following two different approaches: pre-synthesis and post-synthesis modification, and then the effect of soot chemical activation with NaOH was investigated. The adsorption tests showed that the chemical activation was essential to increase efficiency by improving its hydrophilicity and generation of adsorption sites. The experimental and calculated batch adsorption efficiency towards methylene blue was 94.33 mg/g and 37.71 mg/g, respectively. The adsorption efficiency in the fixed bed was 8.00 mg/g. The functional NFMs maintained their efficiency for at least ten adsorption cycles, increasing their economic viability. Furthermore, the NFMs were applied as flexible and free-standing electrodes for detecting methy... Mostrar Tudo |
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Palavras-Chave: |
Hydrogen peroxide generation; Sensor; Sustainability. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02716naa a2200253 a 4500
001 2156876
005 2023-09-25
008 2023 bl uuuu u00u1 u #d
022 $a0959-6526
024 7 $ahttps://doi.org/10.1016/j.jclepro.2023.138697$2DOI
100 1 $aALVARENGA, A. D.
245 $aMultifunctional and sustainable soot-modified nanofibrous membrane for adsorption, sensing and hydrogen peroxide electrogeneration.$h[electronic resource]
260 $c2023
520 $aThe incineration of plastics and biomass is an efficient alternative to reduce the amount of solid waste and is also beneficial for energy production. Soot is one of the main byproducts generated during solid waste incineration, and so far, it has been treated as a pollutant. However, soot is an interesting nanostructured material displaying high specific surface area and chemical reactivity. In this work, soot produced by incomplete burning of plastic materials was combined with polymer nanofibers resulting in a multifunctional membrane explored for pollutant adsorption, sensing of organic pollutants, and in the electrogeneration of hydrogen peroxide. Specifically, soot was immobilized onto polyamide 6 nanofibrous membranes (NFM) produced by solution blow spinning following two different approaches: pre-synthesis and post-synthesis modification, and then the effect of soot chemical activation with NaOH was investigated. The adsorption tests showed that the chemical activation was essential to increase efficiency by improving its hydrophilicity and generation of adsorption sites. The experimental and calculated batch adsorption efficiency towards methylene blue was 94.33 mg/g and 37.71 mg/g, respectively. The adsorption efficiency in the fixed bed was 8.00 mg/g. The functional NFMs maintained their efficiency for at least ten adsorption cycles, increasing their economic viability. Furthermore, the NFMs were applied as flexible and free-standing electrodes for detecting methylene blue with a limit of detection of 2.4 nmol/L. The average per-electrode cost was estimated to be US$0.04. Finally, the NFM also demonstrated the ability to generate H2O2 in situ. Altogether, these results suggest that the immobilization of soot onto nanofibrous membranes is an efficient strategy for developing multifunctional and sustainable materials towards environmental applications.
653 $aHydrogen peroxide generation
653 $aSensor
653 $aSustainability
700 1 $aFACURE, M. H. M.
700 1 $aMONTES-SÁNCHEZ, I.
700 1 $aOLIVEIRA, G. O. S.
700 1 $aLANZA, M. R. V.
700 1 $aMERCANTE, L. A.
700 1 $aCORREA, D. S.
773 $tJournal of Cleaner Production$gn. 422, 138697, 2023.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
28/02/2013 |
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Data da última atualização: |
31/10/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
FURTADO, M. T.; NUNES, C. J. S.; SOUZA, M. L. de; MAIA, A. G.; FURTADO, C. M.; CUNHA, C. R. da. |
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Afiliação: |
CLARISSA RESCHKE DA CUNHA, CPAF-AC. |
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Título: |
Características fisico-quimicas da polpa de caju in natura refrigerada e congelada. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS, 23., 2012, Campinas. Anais... Campinas: SBCTA, 2012. |
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Idioma: |
Português |
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Conteúdo: |
O pedúnculo de caju (Anacardium occidentale L.) tem amplo potencial de aproveitamento na agroindústria. O objetivo deste trabalho foi avaliar as características físico-químicas da polpa de caju sob diferentes condições de armazenamento. O experimento foi realizado na Unidade de Tecnologia de Alimentos da Universidade Federal do Acre. Os pseudofrutos foram colhidos no estádio fisiológico de maturação completamente maduros, selecionados, lavados e higienizados com água clorada a 200 ppm por 15 minutos. A polpa foi extraída em centrifuga, sem adição de água, envasada em recipientes de polietileno com tampa, capacidade 100 mL, refrigerada ou congelada e analisada ate o 25° dia. O delineamento experimental foi inteiramente casualizado com três tratamentos e quatro repetições. |
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Thesagro: |
Produto de origem vegetal; Propriedade fisico-quimica. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/77653/1/Caracteristicas-fisico-quimicas-polpa-caju.pdf
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Marc: |
LEADER 01467nam a2200193 a 4500
001 1951726
005 2023-10-31
008 2012 bl uuuu u00u1 u #d
100 1 $aFURTADO, M. T.
245 $aCaracterísticas fisico-quimicas da polpa de caju in natura refrigerada e congelada.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS, 23., 2012, Campinas. Anais... Campinas: SBCTA$c2012
520 $aO pedúnculo de caju (Anacardium occidentale L.) tem amplo potencial de aproveitamento na agroindústria. O objetivo deste trabalho foi avaliar as características físico-químicas da polpa de caju sob diferentes condições de armazenamento. O experimento foi realizado na Unidade de Tecnologia de Alimentos da Universidade Federal do Acre. Os pseudofrutos foram colhidos no estádio fisiológico de maturação completamente maduros, selecionados, lavados e higienizados com água clorada a 200 ppm por 15 minutos. A polpa foi extraída em centrifuga, sem adição de água, envasada em recipientes de polietileno com tampa, capacidade 100 mL, refrigerada ou congelada e analisada ate o 25° dia. O delineamento experimental foi inteiramente casualizado com três tratamentos e quatro repetições.
650 $aProduto de origem vegetal
650 $aPropriedade fisico-quimica
700 1 $aNUNES, C. J. S.
700 1 $aSOUZA, M. L. de
700 1 $aMAIA, A. G.
700 1 $aFURTADO, C. M.
700 1 $aCUNHA, C. R. da
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