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Effect of cassava waste biochar on sorption and release behavior of atrazine in soil.
Li, Xue; Luo, Jiwei; Deng, Hui; Huang, Peng; Ge, Chengjun; Yu, Huamei; Xu, Wen.
Afiliação
  • Li X; Institute of Tropical Agriculture and Forestry, Hainan University, Renmin Road, Haikou 570228, China; Key Laboratory of Environmental Toxicology (Hainan University), Ministry of Education, Haikou 570228, China.
  • Luo J; Institute of Tropical Agriculture and Forestry, Hainan University, Renmin Road, Haikou 570228, China; Key Laboratory of Environmental Toxicology (Hainan University), Ministry of Education, Haikou 570228, China.
  • Deng H; Institute of Tropical Agriculture and Forestry, Hainan University, Renmin Road, Haikou 570228, China.
  • Huang P; Institute of Tropical Agriculture and Forestry, Hainan University, Renmin Road, Haikou 570228, China; Key Laboratory of Environmental Toxicology (Hainan University), Ministry of Education, Haikou 570228, China.
  • Ge C; Institute of Tropical Agriculture and Forestry, Hainan University, Renmin Road, Haikou 570228, China; Key Laboratory of Environmental Toxicology (Hainan University), Ministry of Education, Haikou 570228, China; College of Life Sciences, Zhejiang University, Hangzhou 310058, China.
  • Yu H; Institute of Tropical Agriculture and Forestry, Hainan University, Renmin Road, Haikou 570228, China. Electronic address: yhm@hainu.edu.cn.
  • Xu W; Institute of Tropical Agriculture and Forestry, Hainan University, Renmin Road, Haikou 570228, China. Electronic address: wenx1225@hainu.edu.cn.
Sci Total Environ ; 644: 1617-1624, 2018 Dec 10.
Article em En | MEDLINE | ID: mdl-30743874
Biochar, can be used as a sorbent material to sequester organic contaminants in soils. In this study, the sorption-desorption behavior of atrazine (AT) was studied in latosol (L) supplemented with varying doses of cassava waste biochar (CW). Changes in the release of AT were assessed with varying aging time (0-60 days) and environmental factors (pH, ionic strength, solid-liquid ratio and disturbance intensity). Results indicate that the addition of 0.1%-5% (w/w) CW in L, promoted AT adsorption by 1.7- to 36-fold as compared with the natural soil control, after 60 days. The release of AT from biochar-amended soil was significantly affected by pH ranged from 3 to 9 and the amount of desorbed AT increased with increasing pH conditions. 0.05 mol/L Ca2+ enhanced AT sorption by biochar. The release of AT increased with increasing solid-liquid ratio (at the ratio of 1:10, 1:15, 1:20) and disturbance intensity, surface complexation and cation exchange were found to play important roles in sorption mechanisms.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Atrazina / Poluentes do Solo / Carvão Vegetal / Herbicidas / Modelos Químicos Tipo de estudo: Prognostic_studies Idioma: En Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Atrazina / Poluentes do Solo / Carvão Vegetal / Herbicidas / Modelos Químicos Tipo de estudo: Prognostic_studies Idioma: En Ano de publicação: 2018 Tipo de documento: Article