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| 7. |  | ALLEONI, L. R. F.; CAMARGO, O. A. de. Boron adsorption in soils from the state of São Paulo, Brazil. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 2, p. 413-421, fev. 2000 Título em português: Adorsão de boro em solos do Estado de São Paulo, Brasil.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 9. | | CAMBRI, M. A.; ALLEONI, L. R. F.; MADRUGA, E. F. Atributos eletroquimicos de um latossolo de cerrado sob plantio direto em funcao da calagem. In: REUNIAO BRAS. FERTILIDADE DO SOLO E NUTRICAO DE PLANTAS, 25.; REUNIAO BRASILEIRA SOBRE MICORRIZAS,8.; SIMPOSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 6.; REUNIAO BRASILEIRA DE BIOLOGIA DO SOLO, 3., 2000. Santa Maria, RS. Fertbio 2000: biodinamica do solo. [S.l.: s.n.], 2000. nao paginado.| Biblioteca(s): Embrapa Cerrados. |
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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: |
23/09/2021 |
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Data da última atualização: |
10/06/2022 |
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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: |
SOARES, M. B.; MILORI, D. M. B. P.; ALLEONI, L. R. F. |
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Afiliação: |
DEBORA MARCONDES BASTOS PEREIRA, CNPDIA. |
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Título: |
How does the biochar of sugarcane straw pyrolysis temperature change arsenic and lead availabilities and the activity of the microorganisms in a contaminated sediment? |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of Soils and Sediments, v. 1, 2021. |
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Páginas: |
3185-3200 |
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DOI: |
http://doi.org/10.1007/s1368-021-03028-4 |
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Idioma: |
Inglês |
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Conteúdo: |
Purpose Biochar is a promising alternative for the remediation of areas contaminated by mining waste. However, depending on the pyrolysis temperature, the biochar may not be equally efective for immobilizing cationic and anionic contaminants. Our objectives in this study were to evaluate (i) the efect of biochar on arsenic (As) and lead (Pb) availabilities in sediments of a contaminated area and (ii) the efect of the biochar pyrolysis temperatures on the enzymatic activity of the microorganisms. Material and methods The contaminated sediment was sampled in an area that served as a lead ore refning plant for 10 years in Brazil. The biochar was produced from sugarcane straw (Saccharum ofcinarum) and pyrolyzed at 350 (BC350), 550 (BC550), and 750 °C (BC750). We performed an incubation experiment to investigate the efects of pyrolysis temperature on the dynamics of As and Pb in the sediment. The availabilities of As and Pb were measured by the difusive gradients in the thin flm, and the quality of organic carbon in the sediment was investigated by laser-induced fuorescence spectroscopy and UV–vis spectroscopy in solution. In addition, the efect of the application of the biochar on the microbial community was evaluated through the activities of the enzymes β-glucosidase, acid, and alkaline phosphatase. Results and discussion The application of biochar changed the chemical composition of the carbon structures and altered the availability of As and Pb. Increases in As availability after application of biochar is directly linked to the chemical composition of the dissolved organic carbon present in BC350, with the activity of phosphatase and phosphorus release (BC550 and BC750) and, fnally, with pH (B550 and BC750). The availability of Pb was reduced after the application of the B550 and B750, which suggests that pyrolyzed biochars at high temperatures may help to reduce the environmental risk associated with Pb contamination. The application of biochar reduced the activity of the enzymes β-glucosity and acid phosphatase, while the alkaline phosphatase activity increased and was dependent on the pyrolysis temperature. Conclusions The increase in As availability after the application of the biochar is related to the chemical composition of dissolved organic carbon and the increase in phosphatase activity. The availability of Pb has been reduced due to the increase in pH, which suggests that pyrolyzed biochars at high temperatures may help to reduce the environmental risk associated with Pb contamination. MenosPurpose Biochar is a promising alternative for the remediation of areas contaminated by mining waste. However, depending on the pyrolysis temperature, the biochar may not be equally efective for immobilizing cationic and anionic contaminants. Our objectives in this study were to evaluate (i) the efect of biochar on arsenic (As) and lead (Pb) availabilities in sediments of a contaminated area and (ii) the efect of the biochar pyrolysis temperatures on the enzymatic activity of the microorganisms. Material and methods The contaminated sediment was sampled in an area that served as a lead ore refning plant for 10 years in Brazil. The biochar was produced from sugarcane straw (Saccharum ofcinarum) and pyrolyzed at 350 (BC350), 550 (BC550), and 750 °C (BC750). We performed an incubation experiment to investigate the efects of pyrolysis temperature on the dynamics of As and Pb in the sediment. The availabilities of As and Pb were measured by the difusive gradients in the thin flm, and the quality of organic carbon in the sediment was investigated by laser-induced fuorescence spectroscopy and UV–vis spectroscopy in solution. In addition, the efect of the application of the biochar on the microbial community was evaluated through the activities of the enzymes β-glucosidase, acid, and alkaline phosphatase. Results and discussion The application of biochar changed the chemical composition of the carbon structures and altered the availability of As and Pb. Increases in As availability ... Mostrar Tudo |
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Palavras-Chave: |
Contaminated sediment; Enzymatic activity; Saccharum oficinarum. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03270naa a2200205 a 4500
001 2134739
005 2022-06-10
008 2021 bl uuuu u00u1 u #d
024 7 $ahttp://doi.org/10.1007/s1368-021-03028-4$2DOI
100 1 $aSOARES, M. B.
245 $aHow does the biochar of sugarcane straw pyrolysis temperature change arsenic and lead availabilities and the activity of the microorganisms in a contaminated sediment?$h[electronic resource]
260 $c2021
300 $a3185-3200
520 $aPurpose Biochar is a promising alternative for the remediation of areas contaminated by mining waste. However, depending on the pyrolysis temperature, the biochar may not be equally efective for immobilizing cationic and anionic contaminants. Our objectives in this study were to evaluate (i) the efect of biochar on arsenic (As) and lead (Pb) availabilities in sediments of a contaminated area and (ii) the efect of the biochar pyrolysis temperatures on the enzymatic activity of the microorganisms. Material and methods The contaminated sediment was sampled in an area that served as a lead ore refning plant for 10 years in Brazil. The biochar was produced from sugarcane straw (Saccharum ofcinarum) and pyrolyzed at 350 (BC350), 550 (BC550), and 750 °C (BC750). We performed an incubation experiment to investigate the efects of pyrolysis temperature on the dynamics of As and Pb in the sediment. The availabilities of As and Pb were measured by the difusive gradients in the thin flm, and the quality of organic carbon in the sediment was investigated by laser-induced fuorescence spectroscopy and UV–vis spectroscopy in solution. In addition, the efect of the application of the biochar on the microbial community was evaluated through the activities of the enzymes β-glucosidase, acid, and alkaline phosphatase. Results and discussion The application of biochar changed the chemical composition of the carbon structures and altered the availability of As and Pb. Increases in As availability after application of biochar is directly linked to the chemical composition of the dissolved organic carbon present in BC350, with the activity of phosphatase and phosphorus release (BC550 and BC750) and, fnally, with pH (B550 and BC750). The availability of Pb was reduced after the application of the B550 and B750, which suggests that pyrolyzed biochars at high temperatures may help to reduce the environmental risk associated with Pb contamination. The application of biochar reduced the activity of the enzymes β-glucosity and acid phosphatase, while the alkaline phosphatase activity increased and was dependent on the pyrolysis temperature. Conclusions The increase in As availability after the application of the biochar is related to the chemical composition of dissolved organic carbon and the increase in phosphatase activity. The availability of Pb has been reduced due to the increase in pH, which suggests that pyrolyzed biochars at high temperatures may help to reduce the environmental risk associated with Pb contamination.
653 $aContaminated sediment
653 $aEnzymatic activity
653 $aSaccharum oficinarum
700 1 $aMILORI, D. M. B. P.
700 1 $aALLEONI, L. R. F.
773 $tJournal of Soils and Sediments$gv. 1, 2021.
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