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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
11/12/2024 |
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Data da última atualização: |
11/12/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MACHADO, R. C.; VALLE, S. F.; CHAO, I. R. S.; OLIVEIRA, C. R. de. |
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Afiliação: |
COMPANHIA DE SANEAMENTO DO ESTADO DE SÃO PAULO (SABESP); CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
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Título: |
Valorization of Alum Sludge Waste through Zeolite Synthesis for Sustainable Fertilizer Production. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Materials Research, v. 27, e20240269, 2024. |
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Páginas: |
1 - 9 |
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DOI: |
https://doi.org/10.1590/1980-5373-MR-2024-0269 |
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Idioma: |
Inglês |
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Conteúdo: |
Alum sludge (AS) from water treatment plants is an abundant, non-toxic residue with high Si and Al contents. These characteristics make it an ideal precursor for zeolite synthesis, not only reducing the environmental impacts from AS disposal but also adding value to the waste by promoting its reuse. Herein, we propose a route to prepare zeolitic materials from AS, aiming for its application as a component of slow-release fertilizers, using mild conditions and cost-effective hydrothermal synthesis. X-Ray Diffraction revealed the formation of sodalite (Na-SOD) in short times (5-10 h) and moderate temperatures (100-120ºC), with sodium silicate addition favoring Si-quartz consumption and zeolite crystallization, without a fusion step. The Na-SOD showed a desirable cation exchange capacity, reaching 117 mg g-1 for K+ . A K-SOD fertilizer was then prepared with an average 490 nm size, 2 m2 g-1 BET surface area, and slow-release behavior. Incubation in soil confirmed that Al was inactive in K-SOD and did not immobilize phosphate, in addition to promoting high K+ availability. The results support the potential of AS reuse for application in agriculture as an efficient and sustainable fertilizer. |
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Palavras-Chave: |
Alum sludge; Fertilizer; Sodalite; Waste; Zeolite. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01907naa a2200241 a 4500
001 2170351
005 2024-12-11
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/1980-5373-MR-2024-0269$2DOI
100 1 $aMACHADO, R. C.
245 $aValorization of Alum Sludge Waste through Zeolite Synthesis for Sustainable Fertilizer Production.$h[electronic resource]
260 $c2024
300 $a1 - 9
520 $aAlum sludge (AS) from water treatment plants is an abundant, non-toxic residue with high Si and Al contents. These characteristics make it an ideal precursor for zeolite synthesis, not only reducing the environmental impacts from AS disposal but also adding value to the waste by promoting its reuse. Herein, we propose a route to prepare zeolitic materials from AS, aiming for its application as a component of slow-release fertilizers, using mild conditions and cost-effective hydrothermal synthesis. X-Ray Diffraction revealed the formation of sodalite (Na-SOD) in short times (5-10 h) and moderate temperatures (100-120ºC), with sodium silicate addition favoring Si-quartz consumption and zeolite crystallization, without a fusion step. The Na-SOD showed a desirable cation exchange capacity, reaching 117 mg g-1 for K+ . A K-SOD fertilizer was then prepared with an average 490 nm size, 2 m2 g-1 BET surface area, and slow-release behavior. Incubation in soil confirmed that Al was inactive in K-SOD and did not immobilize phosphate, in addition to promoting high K+ availability. The results support the potential of AS reuse for application in agriculture as an efficient and sustainable fertilizer.
653 $aAlum sludge
653 $aFertilizer
653 $aSodalite
653 $aWaste
653 $aZeolite
700 1 $aVALLE, S. F.
700 1 $aCHAO, I. R. S.
700 1 $aOLIVEIRA, C. R. de
773 $tMaterials Research$gv. 27, e20240269, 2024.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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