Potential risks of organic contaminated soil after persulfate remediation:Harmful gaseous sulfur release

作     者：Yuyang Long Zixiao Wu Xiaodong Ding Jiansong Chen Dongsheng Shen Jiali Shentu Cai Hui 

作者机构：Zhejiang Provincial Key Laboratory of Solid Waste Treatment and RecyclingZhejiang Engineering Research Center of Non-ferrous Metal Waste RecyclingInstrumental Analysis CenterSchool of Environmental Science and EngineeringZhejiang Gongshang UniversityHangzhou 310012China Shangyu Yingtai Fine Chemical Co.Ltd.Shaoxing 312000China Hangzhou Ecological Environment Monitoring CenterHangzhou 310007China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2024年第135卷第1期

页      面：1-9页

核心收录：

学科分类：12[管理学] 1204[管理学-公共管理] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 082803[工学-农业生物环境与能源工程] 08[工学] 0828[工学-农业工程] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0903[农学-农业资源与环境] 0703[理学-化学] 120405[管理学-土地资源管理] 

基　　金：supported by the National Key R&D Program of China (No.2018YFC1800506) the Key R&D Program of Zhejiang Province (No.2020C03083) 

主　　题：Gaseous sulfur release H_2S Long period potential risk Organic contaminated soil remediation Persulfate 

摘      要：Persulfate is considered a convenient and efficient remediation agent for organic contaminated ***,the potential risk of sulfur into the soil remediation by persulfate remains *** this study,glass bottles with different persulfate dosages and groundwater tables were set up to simulate persulfate remediation of organic pollutants(aniline).The results found sulfate to be the main end-product(83.0%–99.5%)of persulfate remediation after10 ***,H_(2)S accounted for 93.4%–99.4%of sulfur reduction end-products,suggesting that H_(2)S was the final fate of sulfur.H_(2)S was released rapidly after one to three days at a maximum concentration of 33.0 ppm,which is sufficient to make a person *** to the fitted curve results,H_(2)S concentration decreased to a safe concentration(0.15 ppm)after 20–85 ***,the maximum concentration of methanethiol reached 0.6 *** results indicated that secondary pollution from persulfate remediation could release harmful gases over a long ***,persulfate should be used more carefully as a remediation agent for soil contamination.