欢迎来到天天文库
浏览记录
ID:49921478
大小:569.94 KB
页数:6页
时间:2020-03-05
《应用表面活性剂_生物柴油微乳液去除污染土壤中多环芳烃.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第6卷第6期环境工程学报Vol.6,No.62012年6月ChineseJournalofEnvironmentalEngineeringJun.2012应用表面活性剂-生物柴油微乳液去除污染土壤中多环芳烃11*112孙翼飞巩宗强苏振成王晓光图影(1.中国科学院沈阳应用生态研究所,沈阳110016;2.辽宁工程技术大学资源与环境工程学院,阜新123000)摘要针对修复焦化厂高浓度多环芳烃污染土壤高成本的现实,采用以非食用性植物油、生物柴油、表面活性剂及其乳化合成的微乳液为淋洗剂,比较不同淋洗剂的淋洗效果。结果表明乳化合
2、成的微乳液对焦化厂土壤中多环芳烃的总去除率高于单独使用表面活性剂为淋洗剂对土壤中多环芳烃的总去除率,说明生物柴油及植物油与表面活性剂乳化形成的微乳液对原污染土壤中的多环芳烃具有显著的增溶作用。1%TW-80和2.5%TW-80对土壤中多环芳烃总去除率分别为11%和14%;以2.5%TW-80为原料乳化合成的微乳液的淋洗去除率较以1%TW-80为原料乳化合成的微乳液高,总去除率分别为15%~30%和11%~18%;以生物柴油为原料乳化合成的微乳液的淋洗去除率较以植物油为原料乳化合成的微乳液高,分别为17%~30%和15%
3、~23%,且对多环芳烃的去除率与其辛醇水分配系数(logKow)呈线性相关关系。关键词多环芳烃生物柴油植物油微乳液中图分类号X53文献标识码A文章编号1673-9108(2012)06-2023-06Applicationofmicroemulsionsynthesizedbysurfactantandbiodieseltoremovepolycyclicaromatichydrocarbonsfromcontaminatedsoil1112SunYifeiGongZongqiangSuZhenchengWangXia
4、oguangTuYing(1.InstituteofAppliedEcology,ChineseAcademyofSciences,Shenyang110016,China;2.DepartmentofResourcesandEnviromentalEngineering,LiaoningTechnicalUniversity,Fuxin123000,China)AbstractIthasbeenanissuethatremediationofsoilswithhighconcentrationsofPAHswills
5、pendtoomuch.Fourkindsofsolutions,non-edibleplantoil,biodiesel,surfactantsandmicroemulsionwhichwassynthe-sizedbysurfactantandbiodieselorvegetableoil,wereselectedasthewashingagentstostudythePAHremoval.ResultsshowedthatmicroemulsiongotahighertotalPAHremovalthansurf
6、actactadditionalone,whichindicatedthatbiodieselandnon-edibleplantoilcouldenhancedesorptionofPAHsfromMGPsoilinthepresenceofsur-factants.2.5%tween80solutionresultedinmoreobviousenhancementofPAHdesorptionfromthecontamina-tedsoilcomparedto1%tween80,thePAHremovalswer
7、e14%and11%individually.Microemulsionfrom2.5%tween80inducedahigherPAHremovalthanmicroemulsionfrom1%tween80,PAHremovalrangedfrom15%and11%to30%and18%,separately.AdditionbidieseltosurfactantobtainedhigherPAHremovalscomparedtovegetableoiladdition,thePAHremovalswerera
8、ngedfrom17%and15%to30%and23%,re-spectively,andagoodcorrelationwasfoundbetweenremovalsofindividualPAHsandtheirlogKow.Keywordspolycyclicaromatichydrocarbons;biodiesel;v
此文档下载收益归作者所有