化工进展 ›› 2020, Vol. 39 ›› Issue (1): 1-13.DOI: 10.16085/j.issn.1000-6613.2019-0675

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过硫酸盐活化方式与氧化降解有机物效能及其在污染场地修复中的应用

章晋门1,2(),陈泉源1,2(),杨慧敏1,2   

  1. 1. 东华大学环境科学与工程学院,上海 201620
    2. 上海污染控制与生态安全研究院,上海 200092
  • 收稿日期:2019-04-28 出版日期:2020-01-05 发布日期:2020-01-14
  • 通讯作者: 陈泉源
  • 作者简介:章晋门(1995—),男,硕士研究生,研究方向为高级氧化及土壤修复。E-mail:18279185306@163.com
  • 基金资助:
    国家重点研究发展计划(2016YFC0400501;2016YFC0400502);中央高校基本科研专项资金项目(19D111321)

Influence of persulfate activation on organic pollutant degradation and application in remediation of contaminated land

Jinmen ZHANG1,2(),Quanyuan CHEN1,2(),Huimin YANG1,2   

  1. 1. College of Environment Science and Engineering, Donghua University, Shanghai 201620, China
    2. Shanghai Institute of Pollution Control and Ecological Safety, Shanghai 200092, China
  • Received:2019-04-28 Online:2020-01-05 Published:2020-01-14
  • Contact: Quanyuan CHEN

摘要:

过氧单硫酸盐(PMS)及过二硫酸盐(PDS)在工业污染场地修复中应用广泛,通过活化作用能够产生氧化性更强的·SO4-自由基,从而更好地氧化降解有机污染物。本文比较了几种典型活化方式,包括紫外(UV)、碱、过渡金属、热以及含碳物质,并分析了它们的优缺点及适用条件;讨论了过硫酸盐活化机理及动力学过程;分析了无机阴离子(Cl-HCO3-/CO32-NO3-NO2-HPO42-H2PO4-)与·SO4-自由基相互作用及其对有机污染物氧化降解的影响;针对活化过硫酸盐在工业污染场地修复领域的应用,对过硫酸盐活化方法的发展趋势进行了展望。理论研究和实践表明,过硫酸盐不同活化方式为工业污染场地修复提供了多样选择,多种活化方式协同作用将是过硫酸盐高效活化氧化降解有机污染物的发展方向。由于Cl-HCO3-/CO32-抢夺·SO4-的能力较强,认为这些无机盐与有机物复合的污染场地或土壤采用PDS修复需格外谨慎选择活化方法。

关键词: 污染场地, 过硫酸盐, 自由基, 反应动力学, 活化, 无机阴离子

Abstract:

Peroxymonosulfate (PMS) and peroxydisulfate (PDS) are widely used in environmental remediation, because they can produce oxidizing radical ·SO4- through activation to better oxidize organic pollutants. This article compared typical activation methods of PMS and PDS, discussed possible activation mechanisms and reaction kinetics. The latest progresses on PMS and PDS activation methods were summarized. The influence of inorganic anionic (Cl-HCO3-/CO32-NO3-NO2-HPO42-H2PO4-) on degradation reactions of organic pollutants due to competitive consumption on free radicals were also reviewed. Finally, advantages and disadvantages of various activation methods were briefly discussed, and further research areas were put forward. It is concluded that different activation methods provide a variety of options for the remediation of contaminated land. The coupling of activation methods for persulfate as an economical and high-efficiency method should be received more attentions in future. As some inorganic anions have a strong ability to scavenge free radicals, activation methods should be selected cautiously for remediation of contaminated land with high-salt contents and organics.

Key words: contaminated land, persulfate, oxidation radical, reaction kinetics, activation, inorganic anionic

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