表面活性剂强化过硫酸钠氧化修复石油烃污染土壤  

Surfactant Enhancement in Remediation of Petroleum Hydrocarbon Contaminated Soil by Sodium Persulfate

作　　者：郭梦卓 徐佰青 乔显亮[1] 赵靓 GUO Mengzhuo;XU Baiqing;QIAO Xianliang;ZHAO Jing(School of Environmental Science and Technology,Dalian University of Technology,Dalian,Liaoning 116024,China;Dalian Research Institute of Petroleum and Petrochemicals,SINOPEC,Dalian,Liaoning 116045,China)

机构地区：[1]大连理工大学环境学院,辽宁大连116024 [2]中国石油化工股份有限公司大连石油化工研究院,辽宁大连116045

出　　处：《土壤》2023年第1期171-177,共7页Soils

基　　金：中国石油化工股份有限公司大连石油化工研究院委托项目(20-ZC0607-0003)资助。

摘　　要：为了提升石油烃污染土壤的修复效率,考察了不同表面活性剂(吐温-80(Tw-80)、曲拉通X 100(TX 100)、十二烷基硫酸钠(SDS)、十二烷基苯磺酸钠(SDBS))对过硫酸钠氧化土壤中石油烃的强化效果,并分析了表面活性剂SDS强化修复效果较优的原因。土壤中石油烃的去除率遵循如下趋势:SDS>SDBS>TX 100>Tw-80。SDS强化修复效果较优可能与其在土壤中吸附量较小对石油烃的增溶效果好、上清液中过渡态金属含量较高及对过硫酸钠分解消耗少有关。通过优化反应参数,可以进一步提高SDS强化过硫酸钠氧化修复石油烃污染土壤的效率,对采自武汉和盘锦的两种石油烃污染土壤都具有较好的修复效果。In order to improve the remediation effect of petroleum hydrocarbon-contaminated soil,the enhancements of different surfactants(Tween-80(Tw-80),TritonX-100(TX 100),sodium dodecyl sulfate(SDS),sodium dodecyl benzene sulfonate(SDBS))on the oxidation of petroleum hydrocarbons by sodium persulfate were investigated,and the mechanisms for the better performance of SDS were analyzed.The removal rate of petroleum hydrocarbon in soil follows the trend:SDS>SDBS>TX 100>Tw-80.The better remediation effect of SDS may be related to its smaller adsorption capacity,stronger solubilization of petroleum hydrocarbons,higher level of transition metals in supernatant and less decomposition of sodium persulfate in soil.By optimizing the reaction parameters,the enhancement of SDS in remediation efficiency by sodium persulfate can be further improved,and fairly good remediation effects are observed in both soils collected from Wuhan and Panjin.

关 键 词：石油烃污染土壤 过硫酸钠氧化 表面活性剂 强化机理 

分 类 号：X53[环境科学与工程—环境工程]