| Registro completo |
| Provedor de dados: |
REA
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| País: |
Brazil
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| Título: |
ADSORPTION OF ATRAZINE BY BIOCHARS PRODUCED FROM BYPRODUCTS OF THE WOOD INDUSTRY
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| Autores: |
Fruehwirth,Marcelo
Sbizzaro,Mariana
Rosa,Danielle M.
Sampaio,Silvio C.
Reis,Ralpho R. dos
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| Data: |
2020-12-01
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| Ano: |
2020
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| Palavras-chave: |
Water contamination
Isotherm
Functional groups
Kinetics models
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| Resumo: |
ABSTRACT Atrazine is a herbicide widely used in agriculture; however, because of its toxicity, alternatives are needed to remove this compound from the environment. In this study, we investigated the adsorption process and the atrazine-adsorbing ability of three biochars produced at different pyrolysis temperatures from byproducts of the wood industry. The biochars were characterized by Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), and their physical characteristics were evaluated by Brunauer-Emmett-Teller (BET) analysis. The biochar pyrolyzed at 350 °C (BM350) adsorbed 26.04% of the herbicide, showing the best performance among the three biochars tested, even though it had the lowest specific surface area (1.467 m2 g–1). It also had a greater quantity of organic functional groups, which may have influenced the adsorption. The kinetics of the adsorption process were best explained by the pseudo-first-order model and by the Freundlich isotherm model. However, the biochar is not suitable for the removal of the herbicide atrazine, having a lower adsorption capacity than those of others described in the literature.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000600769
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| Editor: |
Associação Brasileira de Engenharia Agrícola
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| Relação: |
10.1590/1809-4430-eng.agric.v40n6p769-776/2020
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| Formato: |
text/html
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| Fonte: |
Engenharia Agrícola v.40 n.6 2020
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| Direitos: |
info:eu-repo/semantics/openAccess
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