Remediation of characteristic contaminants in groundwater of chemical industrial by the activation of PMS: Recent developments and challenges-a mini-review
Yingnan Duan, Jinyu Liu, Qian Liu, Tianhao Li, Hexiang Zhao, Zhurui Shen
Abstract
Groundwater is a key part of the terrestrial ecosystem, but it is vulnerable to pollution in the context of chemical industry development. Treating contaminated groundwater is challenging due to its stable water quality, hidden contamination, and complex treatment requirements. Current research focuses on advanced treatment technologies, among which the advanced oxidation process (AOPs) of peroxomonosulfate (PMS) has great potential. Although there are many reviews of PMS-based AOP, most of them focus on surface water. This review aims to explore the activation reaction of PMS to groundwater by in-situ chemical oxidation (ISCO) technology, further study the reaction mechanism, compare the treatment effect of characteristic pollutants in the groundwater of the chemical industry park, propose new activation methods and catalyst selection, and provide guidance for future groundwater treatment research. This review presents the latest progresses of PMS-based AOPs technology in the in-situ remediation of groundwater in chemical industrial parks over the past five years. While introducing the latest means of PMS activation, it also summarizes the treatment capabilities for different characteristic pollutants. It has a certain guiding role in the fields of environmental remediation and advanced oxidation catalysis.