生态与农村环境学报 ›› 2021, Vol. 37 ›› Issue (2): 145-154.doi: 10.19741/j.issn.1673-4831.2020.0347

• 专论与综述 • 上一篇    下一篇

过渡金属活化过硫酸盐在环境修复领域的研究进展

王肖磊1,2, 吴根华2, 方国东1, 周东美1   

  1. 1. 中国科学院土壤环境与污染修复重点实验室/南京土壤研究所, 江苏 南京 210008;
    2. 安庆师范大学化学化工学院, 安徽 安庆 246011
  • 收稿日期:2020-05-11 发布日期:2021-02-25
  • 通讯作者: 方国东 E-mail:gdfang@issas.ac.cn
  • 作者简介:王肖磊(1995-),男,安徽枞阳人,主要从事环境污染控制化学研究。E-mail:xiaoleiwang-aq@qq.com
  • 基金资助:
    江苏省自然科学基金(BK20170050);国家自然科学基金(41671478);国家重点研发计划(2017YFA0207001)

Transition Metal Activated Persulfate for Environmental Remediation: A Review

WANG Xiao-lei1,2, WU Gen-hua2, FANG Guo-dong1, ZHOU Dong-mei1   

  1. 1. Key Laboratory of Soil Environment and Pollution Remediation/Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;
    2. School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246011, China
  • Received:2020-05-11 Published:2021-02-25

摘要: 近年来基于硫酸根自由基的高级氧化技术被广泛应用于环境修复。过硫酸盐作为硫酸根自由基的前体物质,通过活化过硫酸盐产生高活性的硫酸根自由基,可以高效降解有机污染物。伴随着大量不同种类的过渡金属活化材料被先后研究应用,新的过渡金属活化过硫酸盐去除有机污染物的机制被不断发现,比如常见的过渡金属活化过硫酸盐产生自由基的自由基机制,活化过程中产生单线态氧作为主要氧化物质的单线态氧机制,以及活化过程中生成高价态金属的高价态金属氧化机制。过渡金属活化过硫酸盐技术也被大量应用于土壤修复实践,土壤环境复杂多变影响了修复技术的实践应用。土壤有机质、土壤矿物背景与pH值势必会影响修复过程中的药剂与技术选择。该研究介绍了过渡金属化合物这一类过硫酸盐活化剂的最新进展,同时还介绍了土壤有机质、矿物背景及pH值等土壤背景对过硫酸盐修复技术应用的潜在影响,并对该领域未来的研究方向进行了初步的展望。

关键词: 过硫酸盐, 过渡金属, 活化剂, 活化机制, 土壤背景, 技术应用, 研究进展

Abstract: Sulfate radical (SO4·-)-based advanced oxidation technologies (AOTs) has received increasing attention for environmental remediation in recent years. Persulfate is a general precursor of sulfate radical, and the activation of persulfate to produce sulfate radicals, which can degrade a wide range of pollutants. Transition metal is one of the most popular activators for persulfate activation, and has been studied extensively for pollutant remediation. Meanwhile, the new mechanisms of persulfate activation by transition metal and free radical generation have been explored. For example, it has been reported that the activation of persulfate by transition metal can produce free radicals, singlet oxygen and high valence of ferrous. In addition, soil properties such as organic matter, minerals and pH would influence the remediation efficiency when persulfate activation by transition metal was used in filed applications. Therefore, the present study reviewed some new progresses on persulfate activation by transition metal for environmental remediation and several mechanisms for activation of persulfate by transition metal were discussed. The potential influence of soil properties such as soil organic matter, mineral and soil pH on the application of persulfate remediation was also elucidated.

Key words: persulfate, transition metal, activator, activation mechanism, soil background, technology applications, research progress

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