六价铬污染土壤还原处理后再氧化因素分析综述  

ANALYSIS OF RE-OXIDATION FACTORS IN Cr(VI) CONTAMINATED SOIL AFTER REDUCTION TREATMENT: A REVIEW

作　　者：许维通 苑文仪 李培中 吴泽兵 王晓岩[1] 王景伟 张承龙 白建峰 王临才 XU Wei-tong;YUAN Wen-yi;LI Pei-zhong;WU Ze-bing;WANG Xiao-yan;WANG Jing-wei;ZHANG Cheng-long;BAI Jiangfeng;WANG Lin-cai(School of Environmental and Materials Engineering,Shanghai Polytechnic University,Shanghai 201209,China;Shanghai Collaborative Innovation Centre for WEEE Recycling,Shanghai 201209,China;Beijing Key Laboratory of Industrial Land Contamination and Remediation,Environmental Protection Research Institute of Light Industry,Beijing 100089,China)

机构地区：[1]上海第二工业大学环境与材料工程学院,上海201209 [2]上海电子废弃物资源化协同创新中心,上海201209 [3]轻工业环境保护研究所工业场地污染与修复北京市重点实验室,北京100089

出　　处：《环境工程》2018年第10期130-134,58,共6页Environmental Engineering

基　　金：国家自然科学基金资助项目(21407105);上海市自然科学基金资助项目(14ZR1416700);上海第二工业大学学科建设基金资助项目(A20NH1609B10-2);上海第二工业大学研究生项目基金资助项目(A01GY18F022-d02)

摘　　要：鉴于Cr(VI)的高毒性、易迁移及生物可利用,将Cr(Ⅵ)转化成Cr(OH)_3沉淀是处理Cr(Ⅵ)污染土壤的一大重要措施。然而,很多研究者发现,因为土壤环境中存在天然的氧化剂:锰氧化物和H_2O_2还原处理Cr(Ⅵ)会出现再氧化现象。锰氧化物和H_2O_2与Cr(Ⅲ)的共存是土壤环境中潜在的Cr(Ⅵ)污染源。针对锰氧化物H_2O_2的来源以及与三价铬的相互作用进行总结分析,为更好地理解锰氧化物和H_2O_2的环境行为以及三价铬的再氧化问题提供参考。Based on characteristics of Cr（VI） with high toxicity, solubility and bioavailability, the transformation from Cr（VI） to Cr（III） and subsequent precipitation of Cr（III） in the form of Cr（OH）3 was one of the most important strategies for remediating Cr（VI） contaminated soil. However,many researchers had found that, due to the fact that manganese oxides and hydrogen peroxide existed in the soil environment, Cr（III） could be re-oxidized to Cr（VI）. The presence of manganese oxides and hydrogen peroxide was one of the great potential risk of Cr（VI）. In this review, the research progress of the sources of manganese and hydrogen peroxide and the interaction mechanisms of manganese oxides and hydrogen peroxide with Cr（III） were summarized. The paper provided a basic for a better understanding of environmental behaviors of the manganese oxides and hydrogen peroxide, and further study of trivalent chromium re-oxidation.

关 键 词：污染土壤 Cr(Ⅵ) 氧化还原 长期稳定性 锰氧化物 H2O2 

分 类 号：X53[环境科学与工程—环境工程]