Application of percarbonate and peroxymonocarbonate in decontamination technologies

• 作者: Bo-Tao Zhang Lulu Kuang Yanguo Teng Maohong Fan Yan Ma
• 来源期刊: 环境科学学报（英文版）
• 年，卷（期）: 2021,（7）
• 页码范围: 100-115
• 页数: 16页
• 语种: 英文

摘要

Sodium percarbonate(SPC)and peroxymonocarbonate(PMC)have been widely used in modified Fenton reactions because of their multiple superior features,such as a wide pH range and environmental friendliness.This broad review is intended to provide the funda-mental information,status and progress of SPC and PMC based decontamination technolo-gies according to the peer-reviewed papers in the last two decades.Both SPC and PMC can directly decompose various pollutants.The degradation efficiency will be enhanced and the target contaminants will be expanded after the activation of SPC and PMC.The most commonly used catalysts for SPC activation are iron compounds while cobalt composi-tions are applied to activate PMC in homogenous and heterogeneous catalytical systems.The generation and participation of hydroxyl,superoxide and/or carbonate radicals are in-volved in the activated SPC and PMC system.The reductive radicals,such as carbon dioxide and hydroxyethyl radicals,can be generated when formic acid or methanol is added in the Fe(Ⅱ)/SPC system,which can reduce target contaminants.SPC can also be activated by en-ergy,tetraacetylethylenediamine,ozone and buffered alkaline to generate different reactive radicals for pollutant decomposition.The SPC and activated SPC have been assessed for ap-plication in-situ chemical oxidation and sludge dewatering treatment.The challenges and prospects of SPC and PMC based decontamination technologies are also addressed in the last section.