Journal of Ecology and Rural Environment ›› 2021, Vol. 37 ›› Issue (1): 19-29.doi: 10.19741/j.issn.1673-4831.2020.0063

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Chemical Oxidation Techniques for Soil Remediation of Contamination at Pesticide-production Sites

LI Qian1,2, YANG Lu3, JIANG Yue1,2, WEN Dong-dong1, LI Meng-xue1,2, WANG Xiao-xiao1,2, QIN Cai-die1,2, QIAN Yu-ting1,2, ZHAO Mei1,2, FU Rong-bing1, ZHANG Sheng-tian3, LIN Si-jie1,2   

  1. 1. College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
    2. Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China;
    3. Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
  • Received:2020-07-27 Published:2021-01-22

Abstract: China is one of the world's largest producers and consumers of pesticides, including organochlorines, organophosphates and pyrethroids. Pesticides contamination in soil mainly occur in pesticide-producing sites and agricultural land. Among them, the levels of pesticides residues and organic solvents in the pesticide-producing sites have raised serious concerns. Chemical oxidation technique, due to its advantages on low cost and short remediation time, has gained increasing attention. However, the excessive use of strong oxidants might lead to deterioration of the physicochemical properties of the soil. Therefore, it is important to consider alternative greener chemical oxidants or oxidation techniques to further improve the current technology. This review focuses on the soil remediation of the pesticide-producing sites and summarizes both conventional and emerging chemical oxidation techniques. Future outlook on new oxidants, materials and techniques for soil remediation is also discussed.

Key words: soil pollution, pesticide contamination, catalytic oxidation, chemical oxidation, remediation technique

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