Degradation of atrazine by a novel Fenton-like process and assessment the influence on the treated soil

Min Cheng; Guangming Zeng; Danlian Huang; Cui Lai; Piao Xu; Chen Zhang; Yang Liu; Jia Wan; Xiaomin Gong; Yuan Zhu

doi:10.1016/j.jhazmat.2016.03.033

Degradation of atrazine by a novel Fenton-like process and assessment the influence on the treated soil

J Hazard Mater. 2016 Jul 15:312:184-191. doi: 10.1016/j.jhazmat.2016.03.033. Epub 2016 Mar 24.

Authors

Min Cheng¹, Guangming Zeng², Danlian Huang³, Cui Lai¹, Piao Xu¹, Chen Zhang¹, Yang Liu¹, Jia Wan¹, Xiaomin Gong¹, Yuan Zhu¹

Affiliations

¹ College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China.
² College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China. Electronic address: zgming@hnu.edu.cn.
³ College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China. Electronic address: huangdanlian@hnu.edu.cn.

PMID: 27037472
DOI: 10.1016/j.jhazmat.2016.03.033

Abstract

This is the premier study reporting the remediation of atrazine contaminated soil with steel converter slag (SCS) catalyzed Fenton-like process. The effects of various operating parameters, such as SCS loads and H2O2 concentrations were evaluated with respect to the removal efficiency of atrazine. Results show the optimal SCS load and H2O2 concentration were 80gkg(-1) and 10%, respectably. The graded modified Fenton's oxidation with a 3-time addition of 10% H2O2 was able to remove 93.7% of total atrazine in the contaminated soil and maintain soil temperature within 50°C. In contrast to traditional Fenton treatment, a slight pH increase has been observed due to the addition of SCS. More importantly, experiment conducted at natural conditions with SCS gave the similar atrazine removal to the experiments with the other catalysts (e.g., FeSO4 and Fe2O3). One thing should be noted that after the treatment, dissolved organic carbon (DOC) content increased to 1.206gkg(-1) from an initial value of 0.339gkg(-1).

Keywords: Fenton-like; atrazine; soil remediation; steel converter slag.

Publication types

Research Support, Non-U.S. Gov't