过硫酸钠-过氧化钙修复多环芳烃污染土壤  

Remediation of PAHs contaminated soil with sodium persulfate-calcium peroxide

作　　者：王山榕 王永剑 单广波[1] WANG Shanrong;WANG Yongjian;SHAN Guangbo(Sinopec Dalian Research Institute of Petroleum and Petrochemicals,Dalian 116045,China)

机构地区：[1]中国石化大连石油化工研究院,辽宁大连116045

出　　处：《化工环保》2022年第2期173-178,共6页Environmental Protection of Chemical Industry

基　　金：国家重点研发计划项目(2018YFC1803300)。

摘　　要：采用过硫酸钠-过氧化钙双氧化体系修复多环芳烃(PAHs)污染土壤。通过单因素实验考察了过硫酸钠浓度、过氧化钙质量分数和n(柠檬酸)∶n(硫酸亚铁)等对土壤中PAHs降解率的影响。通过响应面分析确定,在过氧化钙质量分数为2.7%、过硫酸钠浓度为0.62 mol/L、n(柠檬酸)∶n(硫酸亚铁)=1∶1时,PAHs降解率最高,达88.8%。表明双氧化体系对土壤中PAHs具有良好的降解效果。The sodium persulfate-calcium peroxide double oxidation system was used to remediate PAHs contaminated soil.The effects of sodium persulfate concentration,calcium peroxide mass fraction and n(citric acid)∶n(ferrous sulfate) on the degradation rate of polycyclic aromatic hydrocarbons (PAHs) in soil were investigated by single factor experiment.By response surface analysis,the maximum degradation rate of PAHs reaches 88.8% when the mass fraction of calcium peroxide is 2.7%,the concentration of sodium persulfate is 0.62 mol/L and n(citric acid)∶n(ferrous sulfate)=1∶1,which indicates that the double oxidation system has a good degradation effect on PAHs in soil.

关 键 词：土壤修复 多环芳烃 化学氧化 过硫酸钠 过氧化钙 

分 类 号：X53[环境科学与工程—环境工程]