期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 312, 期 -, 页码 184-191出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2016.03.033
关键词
Fenton-like; atrazine; steel converter slag; soil remediation
资金
- Program for the National Natural Science Foundation of China [51278176, 51378190, 51408206, 51579098, 51521006]
- Fundamental Research Funds for the Central Universities
- Program for New Century Excellent Talents in University [NCET-13-0186]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT-13R17]
- Scientific Research Fund of Hunan Provincial Education Department [521293050]
- Hunan Provincial Innovation Foundation for Postgraduate [CX2015B091]
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 80 g kg(-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 degrees 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 1.206 g kg(-1) from an initial value of 0.339 g kg(-1). (C) 2016 Elsevier B.V. All rights reserved.
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