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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
12/12/2024 |
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Data da última atualização: |
13/12/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALVARENGA, A. D.; ANDRE, R. S.; ALVES, A. L. M. M.; CORREA, D. S. |
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Afiliação: |
FEDERAL UNIVERSITY OF SAO CARLOS (UFSCAR); RAFAELA S. ANDRE, UNIVERSIDADE FEDERAL DE SÃO CARLOS; FEDERAL UNIVERSITY OF SAO CARLOS (UFSCAR); DANIEL SOUZA CORREA, CNPDIA. |
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Título: |
Optimization of polyvinylpyrrolidone-SiO2 microfiber membranes for efficient water purification. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Journal of Water Process Engineering v. 67, 106119, 2024. |
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Páginas: |
1 - 14 |
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ISSN: |
2214-7144 |
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DOI: |
https://doi.org/10.1016/j.jwpe.2024.106119 |
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Idioma: |
Inglês |
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Conteúdo: |
Efficient removal of persistent organic pollutants from water remains a significant challenge for conventional water treatment methods. Materials containing carbon and/or SiO2 have demonstrated remarkable adsorption capacities for these pollutants. In this study, we explore the combination of carbonaceous structures and SiO2 through calcination (200 ◦C to 500 ◦C) of microfiber membranes produced with polyvinylpyrrolidone and tetraethyl orthosilicate by the solution blow spinning method, followed by chemical activation using NaOH. The developed membranes were thoroughly characterized to assess their physical and chemical properties. The performance of the ecofriendly microfiber membranes was evaluated in both batch and fixed-bed adsorption systems for methylene blue. Our findings revealed that chemical activation with NaOH effectively removed SiO2 from fibers, increasing the surface area and promoting oxidation of residual carbon, resulting in adsorption efficiency by at least 1000 %. Specifically, the fibers exhibited an average batch adsorption capacity of 873.3 mg/g, with a maximum capacity reaching 1862.4 mg/g. Fixed bed adsorption achieved 273.6 mg/g. Besides, the membrane was also tested for other organic pollutants and metal ions. The production cost of these microfibers was US$1.82/g. The strategy employed in this study, involving the creation of pores and increasing the surface area of fibers proved to be a promising approach for removing dyes and can be expanded to other water pollutants. MenosEfficient removal of persistent organic pollutants from water remains a significant challenge for conventional water treatment methods. Materials containing carbon and/or SiO2 have demonstrated remarkable adsorption capacities for these pollutants. In this study, we explore the combination of carbonaceous structures and SiO2 through calcination (200 ◦C to 500 ◦C) of microfiber membranes produced with polyvinylpyrrolidone and tetraethyl orthosilicate by the solution blow spinning method, followed by chemical activation using NaOH. The developed membranes were thoroughly characterized to assess their physical and chemical properties. The performance of the ecofriendly microfiber membranes was evaluated in both batch and fixed-bed adsorption systems for methylene blue. Our findings revealed that chemical activation with NaOH effectively removed SiO2 from fibers, increasing the surface area and promoting oxidation of residual carbon, resulting in adsorption efficiency by at least 1000 %. Specifically, the fibers exhibited an average batch adsorption capacity of 873.3 mg/g, with a maximum capacity reaching 1862.4 mg/g. Fixed bed adsorption achieved 273.6 mg/g. Besides, the membrane was also tested for other organic pollutants and metal ions. The production cost of these microfibers was US$1.82/g. The strategy employed in this study, involving the creation of pores and increasing the surface area of fibers proved to be a promising approach for removing dyes and can be expanded to ... Mostrar Tudo |
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Palavras-Chave: |
Batch adsorption; Microfibers; SiO2 solubilization; Solution blow spinning. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02273naa a2200241 a 4500
001 2170608
005 2024-12-13
008 2024 bl uuuu u00u1 u #d
022 $a2214-7144
024 7 $ahttps://doi.org/10.1016/j.jwpe.2024.106119$2DOI
100 1 $aALVARENGA, A. D.
245 $aOptimization of polyvinylpyrrolidone-SiO2 microfiber membranes for efficient water purification.$h[electronic resource]
260 $c2024
300 $a1 - 14
520 $aEfficient removal of persistent organic pollutants from water remains a significant challenge for conventional water treatment methods. Materials containing carbon and/or SiO2 have demonstrated remarkable adsorption capacities for these pollutants. In this study, we explore the combination of carbonaceous structures and SiO2 through calcination (200 ◦C to 500 ◦C) of microfiber membranes produced with polyvinylpyrrolidone and tetraethyl orthosilicate by the solution blow spinning method, followed by chemical activation using NaOH. The developed membranes were thoroughly characterized to assess their physical and chemical properties. The performance of the ecofriendly microfiber membranes was evaluated in both batch and fixed-bed adsorption systems for methylene blue. Our findings revealed that chemical activation with NaOH effectively removed SiO2 from fibers, increasing the surface area and promoting oxidation of residual carbon, resulting in adsorption efficiency by at least 1000 %. Specifically, the fibers exhibited an average batch adsorption capacity of 873.3 mg/g, with a maximum capacity reaching 1862.4 mg/g. Fixed bed adsorption achieved 273.6 mg/g. Besides, the membrane was also tested for other organic pollutants and metal ions. The production cost of these microfibers was US$1.82/g. The strategy employed in this study, involving the creation of pores and increasing the surface area of fibers proved to be a promising approach for removing dyes and can be expanded to other water pollutants.
653 $aBatch adsorption
653 $aMicrofibers
653 $aSiO2 solubilization
653 $aSolution blow spinning
700 1 $aANDRE, R. S.
700 1 $aALVES, A. L. M. M.
700 1 $aCORREA, D. S.
773 $tJournal of Water Process Engineering$gv. 67, 106119, 2024.
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| 1. |  | CAUMO, M.; GÄLZER, C. W.; DALAGNOL, L.; POLONI, T.; PERISSUTTI, G. E.; MAIA, J. D. G.; RITSCHEL, P. S. Avaliação do potencial funcional em uvas tintas e rosadas mantidas no Banco Ativo de Germoplasma de Uva. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA, 10.; ENCONTRO DE PÓS-GRADUANDOS DA EMBRAPA UVA E VINHO, 6., 2012, Bento Gonçalves. Resumos... Bento Gonçalves: Embrapa Uva e Vinho, 2012.| Tipo: Resumo em Anais de Congresso |
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