铁碳活化过硫酸盐修复有机污染土壤的Meta分析

苗思雨; 杨新瑶; 张巍巍; 胡恩柱; 孙子程; 许佳瑶

doi:10.13205/j.hjgc.202507025

铁碳活化过硫酸盐修复有机污染土壤的Meta分析

doi: 10.13205/j.hjgc.202507025

1. 沈阳大学环境学院区域污染环境生态修复教育部重点实验室, 沈阳 110044;
2. 东北大学冶金学院, 沈阳 110819

基金项目:

国家重点研发计划项目（2020YFC1806400）；辽宁省“兴辽英才计划”项目（XLYC2007127）；中央高校基本科研业务费专项资金资助项目（N2225037）；辽宁省教育厅基本科研项目（LJKQZ20222367，LJ212411035015）

详细信息

作者简介:
苗思雨（2000—），女，硕士研究生，主要研究方向为有机污染土壤的修复。miaosiyu202202@163.com

通讯作者:
张巍巍（1982—），女，教授，主要研究方向为污染物环境行为与生态效应。zwwno_1@163.com

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出版历程
- 收稿日期: 2025-01-21
- 录用日期: 2025-05-07
- 修回日期: 2025-04-09
- 网络出版日期: 2025-09-11

Meta-analysis of organic-contaminated soil remediation using iron-carbon activated persulfate

1. Key Laboratory of Ecological Restoration of Regional Contaminated Environment, College of Environment, Shenyang University, Shenyang 110044, China;
2. School of Metallurgy, Northeastern University, Shenyang 110819, China

摘要

摘要: 为了探讨化学活化过硫酸盐（PS）对土壤有机污染物的降解效能，对国内外46篇文献进行Meta分析，比较了不同活化剂的作用机理及其效能差异，并分析了PS浓度和水土比对活化效果的影响。结果表明：铁碳材料的应用使PS体系的降解效能平均显著提高了1.80倍，活化效能排序为：铁碳复合材料>碳材料≈纳米零价铁≈铁基复合材料>亚铁离子≈铁矿物。尤其是铁碳复合材料活化PS时污染物降解效率大幅提升，较单独PS处理提高了2.51倍。该工艺对不同种类污染物的降解效果提升存在差异，对半挥发性有机物和总石油烃降解效果提升显著，分别平均提升了2.13， 2.79倍。回归结果表明：活化效能与污染物的正辛醇-水分配系数（logK_ow）呈显著正相关（P<0.01），对于logK_ow值>3.5的有机污染物去除效果提升最为显著，平均提升4.34倍。在工艺参数方面，当PS浓度< 250 mmol/L、水土比为7.5~20 L/kg时化学活化效果最佳，而过高的PS浓度或者过低的水土比均不利于有机污染物的去除。化学活化PS对各类土壤来源污染物均表现出显著降解效果，人工配置污染土壤的效果优于实际场地污染土壤的提升效果。研究结果可为理解化学活化PS的修复机理和工艺条件优化提供参考，为实际场地土壤修复提供科学依据和技术指导。
- 过硫酸盐 /
- 化学活化 /
- 有机污染土壤 /
- Meta分析 /
- 铁-碳复合材料
Abstract: To investigate the degradation efficiency of chemically activated persulfate（PS） on various organic pollutants in soil， a Meta-analysis was conducted based on the data extracted from 46 global studies. The mechanisms of different activators were systematically compared， and their efficiency differences were evaluated. The effects of PS concentration and water-to-soil ratio on the activation performance were analyzed. The results showed that the application of various materials significantly increased the degradation efficiency of the PS system by an average of 1.80 times. The activation efficiency ranked as follows： iron-carbon composites > carbon materials， nano zero-valent iron， and iron-matrix composites > ferrous ions and iron minerals. Notably， when the iron-carbon composites activated PS， the degradation rate of pollutants was 2.51 times higher than that of PS alone. The degradation effects varied across different types of pollutants， especially for semi-volatile organic compounds and total petroleum hydrocarbons， which increased by an average of 2.13 and 2.79 times， respectively. The regression results showed that the activation efficiency was significantly positively correlated with the n-octanol-water partition coefficient （logK_ow） of the pollutants （P < 0.01）. The removal effect of organic pollutants with logK_ow value > 3.5 was the most significant， showing an average increase of 4.34 times. Regarding process parameters， optimal chemical activation occurred at PS concentrations below 250 mmol/L and water-to-soil ratios between 7.5 L/kg and 20 L/kg， whereas higher PS concentrations or lower water-to-soil ratios were less favorable for pollutant removal. Chemically activated PS exhibited a significant degradation effect on various soil-derived pollutants， with slightly better performance observed in artificially configured contaminated soils compared to in-situ contaminated soils. The research results provide a reference for understanding the restoration mechanism and optimizing the process conditions of chemically activated PS， thereby offering a scientific foundation and technical guidance for soil remediation efforts in actual sites.
- persulfate /
- chemical activation /
- organic-contaminated soil /
- Meta-analysis /
- iron-carbon composite material

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参考文献(35)

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