表面活性剂对CaO_(2)修复石油烃污染土壤的影响研究  

Experimental Study on the Effect of Surfactants on Petroleum Hydrocarbon Contaminated Soil Remediation by CaO2

作　　者：张祥 孙勇 向甲甲 ZHANG Xiang;SUN Yong;XIANG Jia-ja(Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,Shanghai 200092,China;Shanghai Shenhuan Environmental Engineering Co.,Ltd.,Shanghai 200092,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092 [2]上海申环环境工程有限公司,上海200092

出　　处：《环境科技》2024年第2期1-6,12,共7页Environmental Science and Technology

基　　金：上海市青年科技英才扬帆计划(21YF1432500);上海市生态环境局科研项目(沪环科[2023]第19号)。

摘　　要：将合成的纳米级过氧化钙(nCaO_(2))用于石油烃污染土壤修复,研究过氧化钙(CaO_(2))、柠檬酸(CA)螯合二价铁(Fe(Ⅱ))投加量对石油烃去除效果的影响,并将不同表面活性剂对石油烃氧化的影响进行比较。结果表明,随着CaO_(2)或CA螯合Fe(Ⅱ)的投加量增大,石油烃去除率均呈先增后降趋势。当n(CaO_(2)):n(Fe(Ⅱ)):n(CA)为4:1:1时,石油烃去除效果最佳,达到70.98%。十二烷基硫酸钠和曲拉通X-100对土壤中石油烃均有较好的增溶效果。质量浓度为3g/L的十二烷基硫酸钠对石油烃的降解可起促进作用,而曲拉通X-100则不利于石油烃的降解。The synthesized nanoscale calcium peroxide was used for the remediation of petroleum hydrocarbons contaminated soil.The influences of calcium peroxide and citric acid chelated ferrous iron dosages on the removal performance of petroleum hydrocarbons were studied,and the oxidation of petroleum hydrocarbons in the presence of different surfactants were also compared.The results show that,the petroleum hydrocarbons removal rates increased first and then decreased with the increase of calcium peroxide or citric acid chelated ferrous iron dosages.The petroleum hydrocarbon removal effect was the best when the molar ratio of calcium peroxide:ferrous iron:citric acid was 4:1:1.Sodium dodecyl sulfate and Triton X-100 had better solubilization effect on the petroleum hydrocarbons in soil.3 g/L sodium dodecyl sulfate promoted the degradation of petroleum hydrocarbons,while Triton X-100 was not conducive to the degradation of petroleum hydrocarbons.

关 键 词：过氧化钙 石油烃 表面活性剂 化学氧化 纳米材料 

分 类 号：X5[环境科学与工程—环境工程]