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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
25/10/2021 |
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Data da última atualização: |
26/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
DE PIERRI, L.; NOVOTNY, E. H.; CERRI, C. E. P.; SOUZA, A. J. de; MATTOS, B. B.; TORNISIELO, V. L; REGITANO, J. B. |
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Afiliação: |
LETÍCIA DE PIERRI, USP/ESALQ; ETELVINO HENRIQUE NOVOTNY, CNPS; CARLOS EDUARDO PELLEGRINO CERRI, USP/ESALQ; ADIJAILTON JOSÉ DE SOUZA, USP/ESALQ; BIANCA BRAZ MATTOS, CNPS; VALDEMAR LUIZ TORNISIELO, USP/CENA; JUSSARA BORGES REGITANO, USP/ESALQ. |
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Título: |
Accessing biochar's porosity using a new low field NMR approach and its impacts on the retention of highly mobile herbicides. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Chemosphere, v. 287, pt. 3, 132237, Jan. 2022. |
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DOI: |
https://doi.org/10.1016/j.chemosphere.2021.132237 |
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Idioma: |
Inglês |
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Conteúdo: |
Agrowaste biochars [sugarcane straw (SS), rice husk (RH), poultry manure (PM), and sawdust (SW)] were synthesized at different pyrolysis temperatures (350, 450, 550, and 650 °C) to evaluate their potential to retain highly mobile herbicides, such as hexazinone and tebuthiuron that often contaminate water resources around sugarcane plantations. A new low field nuclear magnetic resonance approach based on decay due to diffusion in internal magnetic field (NMR-DDIF) was successfully used to determine biochar's porosity and specific surface area (SSA) to clear the findings of this work. SSA of pores with diameters >5.0 um increased with pyrolysis temperatures and seemed to dictate biochar's retention, which was >70% of the applied amounts at 650 °C. These macropores appear to act as main arteries for herbicide intra-particle diffusion into smaller pores, thus enhancing herbicides retention. Biochar granulometry had little, but herbicide aging had a significant effect on sorption, mainly of tebuthiuron. However, soils amended with 10,000 kg ha-1 of the biochars showed low sorption potential. Therefore, higher than usual biochar rates or proper incorporation strategies, i.e., surface incorporation, will be needed to remediate areas contaminated with these highly mobile herbicides, thus precluding their leaching to groundwaters. |
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Palavras-Chave: |
DDIF. |
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Thesaurus Nal: |
Biochar; Hexazinone; Leaching; Sorption; Tebuthiuron. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02178naa a2200277 a 4500
001 2135514
005 2021-10-26
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.chemosphere.2021.132237$2DOI
100 1 $aDE PIERRI, L.
245 $aAccessing biochar's porosity using a new low field NMR approach and its impacts on the retention of highly mobile herbicides.$h[electronic resource]
260 $c2022
520 $aAgrowaste biochars [sugarcane straw (SS), rice husk (RH), poultry manure (PM), and sawdust (SW)] were synthesized at different pyrolysis temperatures (350, 450, 550, and 650 °C) to evaluate their potential to retain highly mobile herbicides, such as hexazinone and tebuthiuron that often contaminate water resources around sugarcane plantations. A new low field nuclear magnetic resonance approach based on decay due to diffusion in internal magnetic field (NMR-DDIF) was successfully used to determine biochar's porosity and specific surface area (SSA) to clear the findings of this work. SSA of pores with diameters >5.0 um increased with pyrolysis temperatures and seemed to dictate biochar's retention, which was >70% of the applied amounts at 650 °C. These macropores appear to act as main arteries for herbicide intra-particle diffusion into smaller pores, thus enhancing herbicides retention. Biochar granulometry had little, but herbicide aging had a significant effect on sorption, mainly of tebuthiuron. However, soils amended with 10,000 kg ha-1 of the biochars showed low sorption potential. Therefore, higher than usual biochar rates or proper incorporation strategies, i.e., surface incorporation, will be needed to remediate areas contaminated with these highly mobile herbicides, thus precluding their leaching to groundwaters.
650 $aBiochar
650 $aHexazinone
650 $aLeaching
650 $aSorption
650 $aTebuthiuron
653 $aDDIF
700 1 $aNOVOTNY, E. H.
700 1 $aCERRI, C. E. P.
700 1 $aSOUZA, A. J. de
700 1 $aMATTOS, B. B.
700 1 $aTORNISIELO, V. L
700 1 $aREGITANO, J. B.
773 $tChemosphere$gv. 287, pt. 3, 132237, Jan. 2022.
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Embrapa Solos (CNPS) |
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| 1. |  | SILVA, A. de S.; PORTO, E. R.; OLIVEIRA, F. Z.; MAYORGA, I. de O.; COUTINHO, S. F. S. Desenvolvimento sustentado no semi-árido brasileiro: um estudo de caso. In: SÁ, I. B.; CORREIA, R. C.; SOUZA, R. A. de; RICHÉ, G. R.; FOTIUS, G. A. Avaliação de ações prioritárias para conservação do bioma caatinga. Petrolina : Embrapa Semi-Árido, 2000. p. 17-20.| Tipo: Capítulo em Livro Técnico-Científico |
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