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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
02/10/2023 |
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Data da última atualização: |
15/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VALLE, S. F.; GIROTO. A. S.; RIBEIRO, C. |
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Afiliação: |
Department of Chemistry, Federal University of São Carlos; Embrapa Instrumentation; CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
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Título: |
Unveiling the Role of Polysulfide Matrices in Phosphate Diffusion for Controlled Release Fertilizers. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
ACS Applied Polymer Materials, vol. 5, 2023. |
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Páginas: |
6941–6949 |
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ISSN: |
2637-6105 |
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DOI: |
https://doi.org/10.1021/acsapm.3c00988 |
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Idioma: |
Inglês |
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Conteúdo: |
Phosphate rock and struvite (ST) dispersion in a polysulfide (PS) matrix offers a sustainable alternative for phosphorous (P) fertilization, as it can favor P dissolution and control its release, while also being a sulfur fertilizer. Herein, we discuss the PS permeability mechanism as well as the chemical and structural factors that affect P diffusion from PS composites. SEM and contact angle showed that P particles increased PS porosity and hydrophilicity, which favors P release. Within 7 days in soil, Fe-oxide papers revealed that the Pdiffusion diameter was only 0.3 cm for ST against up to 2.3 cm from the PS composite. In 28 days, available P in soil from the apatite increased from 6 to up to 79 mg/dm3 due to its dispersion in PS. In the adapted Ussing Chamber permeability test, PS displayed higher affinity toward anion permeability and a negligible cation diffusion, which might contribute to the gradual P release and higher availability in soil. |
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Palavras-Chave: |
Controlled release; Inverse vulcanization; Polysulfide. |
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Categoria do assunto: |
-- |
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Marc: |
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
