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1、农业环境科学学报2010,29(6):1098-1104JournalofAgro-EnvironmentScience重金属－有机复合污染土壤的电动强化修复研究1，222，321樊广萍，仓龙，徐慧，周东美，周立祥（1．南京农业大学资源与环境学院，南京210095；2．土壤与农业可持续发展国家重点实验室，中国科学院南京土壤研究所，南京210008；3．山东师范大学人口·资源与环境学院，济南250014）摘要：许多污染场地都呈现重金属和有机污染物叠加的趋势，给修复带来了困难和挑战。以红壤为供试土壤，以铜和芘为代表性污染物，研究了添加表面活性剂羟丙基-β-环糊精（HPCD）和氧
2、化剂H2O2对电动修复该复合污染土壤的影响，其目的是实现重金属和有机污染物的同时去除。结果表明，在所有的处理中，芘和铜都有向阴极迁移的趋势；当提高土柱的pH时降低了芘的氧化和降解，同时也阻碍了土壤中铜的迁移和去除；阳极加10%HPCD，阴极控制酸性条件pH3.5有助于土壤中污染物的解吸和迁移，芘和铜的去除率分别可达到51.3%和80.5%；由于H2O2的不稳定性，添加6%H2O2并未明显提高芘和铜的去除率。关键词：电动修复；表面活性剂；复合污染；重金属；多环芳烃；红壤中图分类号：X53文献标志码：A文章编号：1672-2043(2010)06-1098-07Enhanced
3、ElectrokineticRemediationofHeavyMetals-organicPollutantsCompoundContaminatedRedSoilsFANGuang-ping1,2,CANGLong2,XUHui2,3,ZHOUDong-mei2,ZHOULi-xiang1（1.CollegeofResourcesandEnvironmentalScience,NanjingAgriculturalUniversity,Nanjing210095,China;2.StateKeyLaboratoryofSoilandSustainableAgricult
4、ure,InstituteofSoilScience,ChineseAcademyofSciences,Nanjing210008,China;3.CollegeofPopulation,Re－sourceandEnvironment,ShandongNormalUniversity,Ji′nan250014,China）Abstract：Thousandsofsitesarecontaminatedwithbothheavymetalsandorganiccompounds,whichbroughtthedifficultiesandchallengestosoilrem
5、ediation.Previousstudieshadshownthatelectrokinetic（EK）remediationtechnologyhaspotentialtoremoveheavymetalsandor－ganiccompoundssimultaneously.Inthispaper,redsoilwasselectedasatestsoilanditwasspikedwithpyreneandcopperataconcentrationof500mg·kg-1tosimulatetypicalcompoundpollutants.Theimpactof
6、thebiosurfactanthydroxypropyl-β-cyclodextrin（HPCD）andoxidantHOontheEKremediationofcompoundpollutedsoilwithpHcontrolwasstudied.Avoltagegradientof1V·cm-1wasappliedforallthe22testsof15daysduration.Inallthetests,bothpyreneandcopperhadthetrendofmigratingtowardsthecathode.Theresultsshowedthatin－
7、creasingsoilpHreducedtheoxidationanddegradationofpyreneandhinderedtheremovalofcopper.Thetreatmentof10%HPCDandcon－trollingcatholytepHat3.5wasefficientforthedesorptionandmigrationofcontaminants,andtheremovalrateofpyreneandcopperreached51.3%and80.5%,respectively.
