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Intensified Atrazine Removal in a Novel Biochar Coupled Electrolysis-integrated Bioretention System by Yinghui Tang; Qingyu Wu; Lilan Ye; Qiong Wu; Zhen Liu; Xiaoke Lian; Shaochun Yuan; Qinyi Wang; Yao Chen is a Environmental Science article available to read on EtoBox.

What is Intensified Atrazine Removal in a Novel Biochar Coupled Electrolysis-integrated Bioretention System about?

Triazine herbicide (e.g., atrazine, ATZ) loss caused by road stormwater runoff is one of the most important non-point source pollutions. This study developed a biochar coupled electrolysis-integrated system (BC-EC-BRS), and its removal impact on ATZ under different initial concentration of ATZ, received runoff volume and rainfall intensity was investigated. Compared with the other three groups of bioretention systems, including a conventional system without biochar and electrolysis (BRS), an electrolysis-integrated system (EC-BRS), and a biochar amended system (BC-BRS), the ATZ removal rate in BC-EC-BRS was significantly increased to 90.26 %, roughly 40 % higher than BRS, indicating that electrolysis and biochar had a synergistic promotion impact on ATZ removal. However, due to the limitations inherent in the soil medium adsorption site and electron donor, the removal efficiency of ATZ in each system decreased with an increase in the initial concentration of ATZ and rainfall intensity, while the removal efficiency of ATZ in BC-EC-BRS is less affected. The main reason may be that under the presence of electrolysis, ATZ can be oxidized by direct electron transport or by OH adsorbed o

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Author

Yinghui Tang; Qingyu Wu; Lilan Ye; Qiong Wu; Zhen Liu; Xiaoke Lian; Shaochun Yuan; Qinyi Wang; Yao Chen

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)