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时间:2019-05-11
《电气石和微生物对水溶液中铅吸附研究_王翠苹》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34卷第7期Vol.34No.72011年7月EnvironmentalScience&TechnologyJul.第342011卷王翠苹,常颖,孙红文,等.电气石和微生物对水溶液中铅吸附研究[J].环境科学与技术,2011,34(7):12-16.WangCui-ping,ChangYing,SunHong-wen,etal.Leadadsorptionbytourmalineandmicroorganism[J].EnvironmentalScience&Technology,2011,34(7):12-16.电气石和微生物对水溶液中铅吸附研究*王翠苹,常颖,孙
2、红文,冯晗,戴美新,方燕,吴济舟(南开大学环境科学与工程学院,环境污染过程及基准教育部重点实验室,天津300071)摘要:论文探讨了电气石、不同微生物、以及电气石与枯草芽孢杆菌(Bacillussubtilis,简写B.subtilis)联合对Pb2+的吸附效果。研究表明,溶液pH=5时,电气石吸附效率比B.subtilis高7.9%,当溶液pH值升到5.5时,B.subtilis和电气石对Pb2+的吸附效率均升高,但B.subtilis比电气石吸附效率高15.35%;当溶液pH=5时,130min前B.subtilis对Pb2+的吸附效率低于白腐真菌(Phanero
3、chaetechrysoporium,简写P.chrysoporium),但终点时B.subtilis对Pb2+的吸附效率高于P.chrysosprium对铅的吸附,当溶液pH=5.5时,B.subtilis对Pb2+的吸附效率明显高于P.chrysosprium,证实细菌与真菌吸附重金属性能不同;电气石与B.subtilis联合吸附铅优于它们单独的吸附效果,表明电气石和微生物吸附重金属具有协同作用。关键词:电气石;微生物;吸附;铅中图分类号:X703文献标志码:Adoi:10.3969/j.issn.1003-6504.2011.07.001文章编号:1003-65
4、04(2011)07-0012-05LeadAdsorptionbyTourmalineandMicroorganism*WANGCui-ping,CHANGYing,SUNHong-wen,FENHan,DAIMei-xin,FANGYan,WUJi-zhou(KeyLabofEnvironmentalPollutionProcessandCriteria,CollegeofEnvironmentalScienceandEngineering,NankaiUniversity,Tianjin300071,China)Abstract:Synergisticeffec
5、tofPb2+adsorptionbytourmalineandmicroorganismswasinvestigatedinalab-scaledexperiment.Microorganismusedasbio-sorbentwereB.subtilisandP.chrysosporiumandtheiradsorptioncapabilitiesofPb2+werecompared.ResultsshowedthatB.subtiliswasworsethanP.chrysosporiumwithintheinitial130min(at),butbecameb
6、etterthanthelatterwhenthetimeelapsedto400minwhenpHwas5,andB.subtiliswasmuchbetterthanP.chrysosporiumintermsofPb2+adsorptionundertheconditionofpH5.5.Efficiencyofleadadsorptionontourmalineinaqueoussolutionwas7.9%higherthanthatonB.subtiliswhenpHwas5;besides,highervalueofpH(5.5)oftheaqueous
7、solutionenhancedtheadsorptionefficienciesofboth.ItwasconcludedthattheadsorptionefficiencyoftourmalinecombinedwithB.subtiliswasfarbetterthanthoseoftheseparateones.Keywords:tourmaline;microorganism;adsorption;lead工业酸性废水中一般含有大量的重金属,这种废但是当溶液呈强酸性时,菌体上重金属结合位点为+水一旦进入环境就会对生态环境、公众健康和经济发
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