Data/hora: 07/06/2024 05:48:07

Provedor de dados: | 70
País: | Brazil
Título: | ADSORPTION OF ATRAZINE BY BIOCHARS PRODUCED FROM BYPRODUCTS OF THE WOOD INDUSTRY
Autores: | Fruehwirth,Marcelo; Sbizzaro,Mariana; Rosa,Danielle M.; Sampaio,Silvio C.; Reis,Ralpho R. dos.
Data: | 2020-12-01
Ano: | 2020
Palavras-chave: | Water contamination; Isotherm; Functional groups; Kinetics models.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000600769
Editor: | Associação Brasileira de Engenharia Agrícola
Relação: | 10.1590/1809-4430-eng.agric.v40n6p769-776/2020
Formato: | text/html
Fonte: | Engenharia Agrícola  v.40 n.6 2020
Fonte: | info:eu-repo/semantics/openAccess