摘要
环境中难降解有机物对生态环境及人体健康构成了巨大的威胁.近年来,外场效应活化过硫酸盐高级氧化技术在环境治理中得到了广泛研究.为进一步明确外场效应强化过硫酸盐活化技术的微观机制和污染物去除效能并拓宽其应用范围,综述了包括热场、US(ultrasonic,超声)场、电场、光场、磁场及压电场6类常见外场辅助过硫酸盐活化去除有机污染物的研究进展.结果表明:①热场、US场、电场及光场强化过硫酸盐活化技术去除污染物的效能、活化机理和实际应用价值已被进行详细的研究.②在上述场效应中,磁场仅应用于提高Fe0及相关复合物活化过硫酸盐的效果;而压电效应活化过硫酸盐技术作为新兴的技术手段,其相关的研究报告非常少.③目前的研究仍存在一些不足,如外场效应强化过硫酸盐活化技术的能源利用率、经济成本和实际应用潜能,以及降解过程中副产物的生态毒性等问题仍未进行深入的研究;压电强化过硫酸盐活化技术中压电材料和压电源的选择以及活化机理等内容依然存在空白;需解决多场耦合活化过硫酸盐技术存在的兼容性问题,其应用潜力也需进行评估.研究显示,外场效应强化过硫酸盐氧化技术具有高效的有机物去除能力,可以为推动过硫酸盐氧化技术在水污染控制方面的进一步发展提供更多的技术支撑.
Organic pollutants in the environment pose a huge threat toecological environment and human health.In recent years,the external-field effect enhanced persulfate advanced oxidation technology has been widely developed.In order to clarify its mechanism and broaden the application of persulfate oxidation technology,recent research on the removal of organic pollutants by persulfate oxidation under external fields(viz.thermal,US(ultrasonic),electric,light,magnetic and piezoelectric fields)enhancement is summarized.The results show that these external fields bring new pathways for persulfate activation and enhanced degradation efficiency of organic pollutants removal.However,the current investigation still has some limitations.For example,the energy efficiency,economic cost potential,practical application of external-fields effect enhanced persulfate oxidation technologies,and the ecotoxicity of by-products produced in the degradation process still lack in-depth investigation.Besides,the mechanism of the piezo-activation of persulfate,and thecompatibility in practical operation of multiple-fields enhanced persulfate oxidation need to be further investigated.This study exhibits high organic pollutants removal efficiency by usingexternal-field effect to enhance persulfate advanced oxidation process,which provides a new direction to develop high-performance persulfate advanced oxidation technology in water treatment.
作者
陈妍希
严登明
朱明山
CHEN Yanxi;YAN Dengming;ZHU Mingshan(Guangdong Key Laboratory of Environmental Pollution and Health,School of Environment,Jinan University,Guangzhou 511443,China;Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)
出处
《环境科学研究》
CAS
CSCD
北大核心
2022年第1期131-140,共10页
Research of Environmental Sciences
基金
广东省自然科学杰出青年基金项目(No.2020B1515020038)
广东省“珠江人才计划”青年拔尖人才项目(No.2019QN01L148)。
关键词
外场效应
过硫酸盐氧化技术
有机污染物
external-fields effect
persulfate oxidation processes
organic pollutants
