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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
04/07/2023 |
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Data da última atualização: |
04/07/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PFEIFER, M.; BORTOLETTO-SANTOS, R.; ANDRADE, F. A. C.; RIBEIRO, S. J. L.; AOUADA, F. A.; RIBEIRO, C. |
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Afiliação: |
CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
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Título: |
Hydrotalcite loading boosts the potentially toxic element's retention in hydrogel nanocomposites for environmental treatment. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Applied Clay Science, v. 240, 106976, 2023. |
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Páginas: |
1 - 9 |
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ISSN: |
0169-1317 |
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DOI: |
https://doi.org/10.1016/j.clay.2023.106976 |
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Idioma: |
Inglês |
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Conteúdo: |
The improper disposal of potentially dangerous metal-containing wastes is detrimental to the environment and human health, requiring the development of easy methods for removing these cations, particularly in water bodies. The influence of different surface-charged lamellar materials on the sorption and desorption of Cr6+, Cu2+, and Mn2+ in aqueous solutions was investigated by modifying polyacrylamide/methylcellulose (PAc-MC) hydrogels with bentonite or hydrotalcite. In disk or powder form, the adsorption and desorption capabilities were examined. Regardless of their shape, the bentonite-hydrogel and unmodified hydrogel revealed lower contaminant retention capacities on polymeric structures. In contrast, the hydrotalcite-hydrogel demonstrated a stronger affinity for holding ions in the nanocomposite polymeric structure. The nanocomposite produced by calcining hydrotalcite at 550 ◦C displayed the best retention properties. Shapes of disks or powders did not affect sorption capacity, but disks were considerably more practical for recovering processed materials. These findings contribute to comprehending the retention capacity of modified hydrogels (or modified nanocomposites). |
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Palavras-Chave: |
Hydrogel; Nanoclay. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01939naa a2200241 a 4500
001 2154797
005 2023-07-04
008 2023 bl uuuu u00u1 u #d
022 $a0169-1317
024 7 $ahttps://doi.org/10.1016/j.clay.2023.106976$2DOI
100 1 $aPFEIFER, M.
245 $aHydrotalcite loading boosts the potentially toxic element's retention in hydrogel nanocomposites for environmental treatment.$h[electronic resource]
260 $c2023
300 $a1 - 9
520 $aThe improper disposal of potentially dangerous metal-containing wastes is detrimental to the environment and human health, requiring the development of easy methods for removing these cations, particularly in water bodies. The influence of different surface-charged lamellar materials on the sorption and desorption of Cr6+, Cu2+, and Mn2+ in aqueous solutions was investigated by modifying polyacrylamide/methylcellulose (PAc-MC) hydrogels with bentonite or hydrotalcite. In disk or powder form, the adsorption and desorption capabilities were examined. Regardless of their shape, the bentonite-hydrogel and unmodified hydrogel revealed lower contaminant retention capacities on polymeric structures. In contrast, the hydrotalcite-hydrogel demonstrated a stronger affinity for holding ions in the nanocomposite polymeric structure. The nanocomposite produced by calcining hydrotalcite at 550 ◦C displayed the best retention properties. Shapes of disks or powders did not affect sorption capacity, but disks were considerably more practical for recovering processed materials. These findings contribute to comprehending the retention capacity of modified hydrogels (or modified nanocomposites).
653 $aHydrogel
653 $aNanoclay
700 1 $aBORTOLETTO-SANTOS, R.
700 1 $aANDRADE, F. A. C.
700 1 $aRIBEIRO, S. J. L.
700 1 $aAOUADA, F. A.
700 1 $aRIBEIRO, C.
773 $tApplied Clay Science$gv. 240, 106976, 2023.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria Tropical. |
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Data corrente: |
20/01/2010 |
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Data da última atualização: |
12/06/2017 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
MIRANDA, F. R. de; MESQUITA, A. L. M.; MARTINS, M. V. V.; ARAGÃO, F. A. S. de; FERNANDES, C. M. F. |
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Afiliação: |
Fábio Rodrigues de Miranda, CNPAT; Antônio Lindemberg Martins Mesquita, CNPAT; Marlon Vagner V. Martins, CNPAT; Fernando A. S. de Aragão, CNPAT; Cássia M. F. Fernandes, CNPAT. |
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Título: |
Evaluation of a control system based on the Irrigas® sensor for irrigation scheduling of hydroponic tomato in Ceará, Brazil. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON IRRIGATION OF HORTICULTURAL CROPS, 6., 2009, Viña del Mar. Book of Abstracts. Talca: Universidade de Talca, 2009. p. 140. |
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Idioma: |
Inglês |
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Palavras-Chave: |
Hidroponia; Nordeste. |
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Thesagro: |
Irrigação; Tomate. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPAT-2010/11622/1/RE09068.pdf
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Marc: |
LEADER 00720nam a2200193 a 4500
001 1581096
005 2017-06-12
008 2009 bl uuuu u00u1 u #d
100 1 $aMIRANDA, F. R. de
245 $aEvaluation of a control system based on the Irrigas® sensor for irrigation scheduling of hydroponic tomato in Ceará, Brazil.
260 $aIn: INTERNATIONAL SYMPOSIUM ON IRRIGATION OF HORTICULTURAL CROPS, 6., 2009, Viña del Mar. Book of Abstracts. Talca: Universidade de Talca, 2009. p. 140.$c2009
650 $aIrrigação
650 $aTomate
653 $aHidroponia
653 $aNordeste
700 1 $aMESQUITA, A. L. M.
700 1 $aMARTINS, M. V. V.
700 1 $aARAGÃO, F. A. S. de
700 1 $aFERNANDES, C. M. F.
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