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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Meio-Norte. |
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Data corrente: |
13/11/1996 |
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Data da última atualização: |
17/02/2014 |
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Tipo da produção científica: |
Folder/Folheto/Cartilha |
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Autoria: |
GARCIA, L. F. |
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Afiliação: |
EMBRAPA-CPAMN. |
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Título: |
Espacamento e adubacao introgenada em melancia. I. Efeito sobre a produtividade. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Teresina: EMBRAPA-CPAMN, 1996. |
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Páginas: |
3p. |
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Série: |
(EMBRAPA-CPAMN. Pesquisa em Andamento, 65). |
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Idioma: |
Português |
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Palavras-Chave: |
Adubacao nitrogenada; Brasil; Citrulus lanatus; Piaui. |
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Thesagro: |
Espaçamento; Melancia; Produção. |
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Categoria do assunto: |
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X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/97542/1/PAND650001.pdf
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Marc: |
LEADER 00571nam a2200205 a 4500
001 1051758
005 2014-02-17
008 1996 bl uuuu u0uu1 u #d
100 1 $aGARCIA, L. F.
245 $aEspacamento e adubacao introgenada em melancia. I. Efeito sobre a produtividade.
260 $aTeresina: EMBRAPA-CPAMN$c1996
300 $a3p.
490 $a(EMBRAPA-CPAMN. Pesquisa em Andamento, 65).
650 $aEspaçamento
650 $aMelancia
650 $aProdução
653 $aAdubacao nitrogenada
653 $aBrasil
653 $aCitrulus lanatus
653 $aPiaui
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Registro original: |
Embrapa Meio-Norte (CPAMN) |
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Biblioteca |
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Tipo/Formato |
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Registro |
Volume |
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URL |
Voltar
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
28/09/2022 |
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Data da última atualização: |
28/09/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
ALVARENGA, A. D.; ANDRE, R. S.; TEODORO, K. B. R.; SCHNEIDER, R.; MERCANTE, L. A.; CORREA, D. S. |
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Afiliação: |
DANIEL SOUZA CORREA, CNPDIA. |
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Título: |
Nanofibrous filtering membranes modified with sucrose-derived carbonaceous materials for adsorption in batch and fixed bed. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Chemical Engineering Journal, v. 451, e138557, 2023. |
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Páginas: |
1 - 15 |
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ISSN: |
1385-8947 |
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DOI: |
https://doi.org/10.1016/j.cej.2022.138557 |
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Idioma: |
Inglês |
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Conteúdo: |
Membrane technologies have been considered as an efficient and economical alternative to help providing clean water for the population on a large scale. In this regard, the development of low-cost adsorbent membranes, with scalable production and high efficiency is indeed necessary and urgently required. In this work, we investigated the methylene blue removal performance of solution blow spun (SBS) polyamide 6 (PA6) nanofibrous membranes (NFMs) coated with different types of carbonaceous materials. Sucrose was employed as carbon source and two distinct approaches, namely hydrothermal and caramelization routes, were investigated to produce it. The NFMs were functionalized by dip-coating and then chemically activated using NaOH to further enhance the adsorption efficiency. The carbonaceous materials-modified NFMs were characterized by scanning electron microscopy (SEM), contact angle, Zeta potential, Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA). Batch and fixed bed experiments revealed that the NFMs modified by dip coating with the carbonaceous materials present competitive adsorption capacity in addition to be a simple, low cost and scalable strategy. The experimental and maximum adsorption capacities of batch adsorption were 371.69 mg/g and 471.58 mg/g for the NFMs modified with hydrothermal carbon, and 260.52 mg/g and 651.04 mg/g for the NFMs coated with black caramel, respectively. The NFMs modified with hydrothermal carbon and caramel carbon showed applicability in scalable systems based on fixed bed adsorption experiments. Our results suggest that nanofibrous membranes coated with carbonaceous materials from sucrose are a suitable tool to develop adsorptive membranes for pollutants removal and open the venue to also explore other carbon-rich sources, including bio- and food residues for adsorptive applications. MenosMembrane technologies have been considered as an efficient and economical alternative to help providing clean water for the population on a large scale. In this regard, the development of low-cost adsorbent membranes, with scalable production and high efficiency is indeed necessary and urgently required. In this work, we investigated the methylene blue removal performance of solution blow spun (SBS) polyamide 6 (PA6) nanofibrous membranes (NFMs) coated with different types of carbonaceous materials. Sucrose was employed as carbon source and two distinct approaches, namely hydrothermal and caramelization routes, were investigated to produce it. The NFMs were functionalized by dip-coating and then chemically activated using NaOH to further enhance the adsorption efficiency. The carbonaceous materials-modified NFMs were characterized by scanning electron microscopy (SEM), contact angle, Zeta potential, Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA). Batch and fixed bed experiments revealed that the NFMs modified by dip coating with the carbonaceous materials present competitive adsorption capacity in addition to be a simple, low cost and scalable strategy. The experimental and maximum adsorption capacities of batch adsorption were 371.69 mg/g and 471.58 mg/g for the NFMs modified with hydrothermal carbon, and 260.52 mg/g and 651.04 mg/g for the NFMs coated with black ... Mostrar Tudo |
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Palavras-Chave: |
Carbonaceous materials; Fixed bed; Solution blow spinning; Sustainable materials. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02795naa a2200265 a 4500
001 2146960
005 2022-09-28
008 2023 bl uuuu u00u1 u #d
022 $a1385-8947
024 7 $ahttps://doi.org/10.1016/j.cej.2022.138557$2DOI
100 1 $aALVARENGA, A. D.
245 $aNanofibrous filtering membranes modified with sucrose-derived carbonaceous materials for adsorption in batch and fixed bed.$h[electronic resource]
260 $c2023
300 $a1 - 15
520 $aMembrane technologies have been considered as an efficient and economical alternative to help providing clean water for the population on a large scale. In this regard, the development of low-cost adsorbent membranes, with scalable production and high efficiency is indeed necessary and urgently required. In this work, we investigated the methylene blue removal performance of solution blow spun (SBS) polyamide 6 (PA6) nanofibrous membranes (NFMs) coated with different types of carbonaceous materials. Sucrose was employed as carbon source and two distinct approaches, namely hydrothermal and caramelization routes, were investigated to produce it. The NFMs were functionalized by dip-coating and then chemically activated using NaOH to further enhance the adsorption efficiency. The carbonaceous materials-modified NFMs were characterized by scanning electron microscopy (SEM), contact angle, Zeta potential, Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA). Batch and fixed bed experiments revealed that the NFMs modified by dip coating with the carbonaceous materials present competitive adsorption capacity in addition to be a simple, low cost and scalable strategy. The experimental and maximum adsorption capacities of batch adsorption were 371.69 mg/g and 471.58 mg/g for the NFMs modified with hydrothermal carbon, and 260.52 mg/g and 651.04 mg/g for the NFMs coated with black caramel, respectively. The NFMs modified with hydrothermal carbon and caramel carbon showed applicability in scalable systems based on fixed bed adsorption experiments. Our results suggest that nanofibrous membranes coated with carbonaceous materials from sucrose are a suitable tool to develop adsorptive membranes for pollutants removal and open the venue to also explore other carbon-rich sources, including bio- and food residues for adsorptive applications.
653 $aCarbonaceous materials
653 $aFixed bed
653 $aSolution blow spinning
653 $aSustainable materials
700 1 $aANDRE, R. S.
700 1 $aTEODORO, K. B. R.
700 1 $aSCHNEIDER, R.
700 1 $aMERCANTE, L. A.
700 1 $aCORREA, D. S.
773 $tChemical Engineering Journal$gv. 451, e138557, 2023.
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Embrapa Instrumentação (CNPDIA) |
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