Ball milling-assisted preparation of sludge biochar as a novel periodate activator for nonradical degradation of sulfamethoxazole: Insight into the mechanism of enhanced electron transfer
文献类型： 外文期刊
作者： He, Liuyang 1 ; Yang, Shangding 1 ; Yang, Lie 1 ; Shen, Shitai 1 ; Li, Yulong 1 ; Kong, Dejin 1 ; Chen, Zhuqi 2 ; Yang, Shengmao 3 ; Wang, Jia 2 ; Wu, Li 1 ; Zhang, Zulin 1 ;
作者机构： 1.Wuhan Univ Technol, Sch Resources & Environm Engn, Hubei Key Lab Mineral Resources Proc & Environm, Wuhan 430070, Peoples R China
2.Huazhong Univ Sci & Technol, Sch Environm Sci & Engn, Wuhan 430074, Peoples R China
3.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, 198 Shiqiao Rd, Hangzhou 310021, Peoples R China
4.James Hutton Inst, Aberdeen ABI5 8QH, Scotland
关键词： Periodate; Magnetic sludge biochar; Ball milling; Electron transfer; Nonradical degradation
期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：9.988； 五年影响因子：10.366 ）
ISSN： 0269-7491
年卷期： 2023 年 316 卷
页码：
收录情况： SCI
摘要： The non-radical pathway of periodate (PI) activation for the removal of persistent organic contaminants has received increasing attention due to its higher stability and oxidative advantages. In this study, the degradation of sulfamethoxazole (SMX) by ball mill treated magnetic sludge biochar (BM-MSBC) through activation of PI by electron transfer mechanism was reported. Experimental and characterization results showed that the ball milling treatment resulted in a better pore and defect structure, which also significantly enhanced the electron transfer capacity of the sludge biochar. The BM-MSBC/PI system exhibited notable dependence of activator concentration and initial pH, while the effect of PI concentration was not significant. The coexisting substances (common anions and natural organic matters) hardly affect the degradation of SMX in the BM-MSBC/PI system. The phytotoxicity experiments suggested that the treatment of BM-MSBC/PI system could significantly reduce the biological toxicity of SMX solution. This study provides a novel, economical, and facile modification method for the application of sludge biochar in advanced oxidation processes.
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