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Registro Completo |
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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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Embrapa Instrumentação (CNPDIA) |
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| Registros recuperados : 12 | |
| 1. |  | MASTELARO, A. P.; COSTA, G. F.; ALVES, F. V.; ALVES, G. F.; AMARAL, P. N. C. Avaliação do microclima em diferentes arranjos de sistemas em integração lavoura-pecuária-floresta. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 14., 2018, Campo Grande - MS. [Resumos dos trabalhos]. Brasília, DF, Embrapa, 2018 115 p. (Embrapa Gado de Corte. Documentos, 258). P. 24-25| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 4. | | MATEUS, R. G.; BARRIOS, S. C. L.; VALLE, C. B. do; FIGUEIREDO, U. J.; AMARAL, P. N. C. Avaliação de híbridos de Brachiaria decumbens quanto ao desempenho agronômico e resistência às cigarrinhas-das-pastagens. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 8., 2012, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2012. 2 p. (Embrapa Gado de Corte. Documentos, 198).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 6. | | MATEUS, R. G.; BARRIOS, S. C. L.; VALLE, C. B. do; VALERIO, J. R.; TORRES, F. Z. V.; MARTINS, L. B.; AMARAL, P. N. C. do. Genetic parameters and selection of Brachiaria decumbens hybrids for agronomic traits and resistance to spittlebugs. Crop Breeding and Applied Biotechnology, v. 15. n. 4, p. 227-234, oct./dez. 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 7. | | MACHADO, W. K. R.; BARRIOS, S. C. L.; VALLE, C. B. do; JANK, L.; SANTOS, M. F.; MATEUS, R. G.; AMARAL, P. N. C. DO. Avaliação agronômica de híbridos de Brachiaria spp. pré-selecionados do Programa de Melhoramento da Embrapa Gado de Corte. In: WORKSHOP MELHORAMENTO VEGETAL: CONTRIBUIÇÕES, AVANÇOS E PERSPECTIVAS PARA O CERRADO BRASILEIRO, 2., 2016. Anais... Campo Grande, MS: SBMP, 2016.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 8. | | MACHADO, W. K. R.; BARRIOS, S. C. L.; MATEUS, R. G.; VALLE, C. B. do; AMARAL, P. N. C. do; GOMES, L. L.; SANTOS, I. C. dos. Estimativa de parâmetros e correlações genéticas em híbridos de Brachiaria spp. para caracteres agronômicos e nutritivos. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 9., 2017, Foz de Iguaçu. Melhoramento de plantas: projetando o futuro: resumos das palestras. p. 617| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 9. | | ALVES, F. V.; COSTA, G. F. da; MASTELARO, A. P.; AMARAL, P. N. C. do; ALVES, G. F.; LAURA, V. A.; ALMEIDA, R. G. de. Influência do sombreamento natural no conforto térmico animal em pastagens do Mato Grosso do Sul. Pesquisa Florestal Brasileira, Colombo, v. 39, (nesp), e201902043, 2019. p. 289 Edição especial dos resumos do IUFRO World Congress, 25., 2019, Curitiba.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 10. | | CANDIDO, A. R.; AMARAL, P. N. C.; BARRIOS, S. C. L.; VALLE, C. B. do; MACHADO, W. K. R.; GOUVEIA, B. T.; QUEIROZ JÚNIOR, J. M.; NOBRE, A. A. A. Avaliação e seleção de híbridos de Brachiaria para caracteres relacionados à produção de sementes. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 14., 2018, Campo Grande - MS. [Resumos dos trabalhos]. Brasília, DF, Embrapa, 2018 115 p. (Embrapa Gado de Corte. Documentos, 258). p. 16-17| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 11. | | MATIAS, F. I.; BARRIOS, S. C. L.; BEARARI, L. M.; MEIRELES, K. G. X.; MATEUS, R. G.; AMARAL, P. N. C. do; ALVES, G. F.; VALLE, C. B. do; FRITSCHE-NETO, R. Contribution of Additive and Dominance Effects on Agronomical and Nutritional Traits, and Multivariate Selection on Urochloa spp. Hybrids. Crop Science, v. 58, n. 6, p. 2444-2458, November/December, 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 12. | | MATIAS, F. I.; CANDIDO, A. R.; MACHADO, W. K. R.; AMARAL, P. N. C. do; DIAS, A. M.; VALLE, C. B. do; BARRIOS, S. C. L.; VALERIO, J. R.; TORRES, F. Z. V.; VERZIGNASSI, J. R.; ARRUDA, C. O. C. B. de; GOUVEIA, B. T.; NOBRE, A. A. A. Urochloa spp. multivariate performance: Similarities and divergences among intra- and interspecific populations. Crop Breeding e Genetics, p. 1-13, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: C - 0 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| Registros recuperados : 12 | |
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