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1、YIJ06GJ5分類號:密級:X53單位代碼學(xué)號10364巖微震業(yè)大虧學(xué)位論文多孔木炭固定化微生物對土壤中阿特拉津的吸附與降解研究Adsorptionanddegradationofatrazineinsoilbythecharcoalenrichedwithconsortiaofdegradationbacteria研究生:垂雪接指導(dǎo)教師:魚友邀熬攫合作指導(dǎo)教師:申請學(xué)位門類級別:工堂亟專業(yè)名稱:巫縫工程研究方向:垡塑堡復(fù)所在學(xué)院:資

2、遮墨巫撞堂瞳答辯委員會主席2007年6月Abstract砧eapplicationofimmobilizedmicroorganismhasbecomethehotspotthatmoreandmorescholarsarereserehingItiswidelyusedinindustryagriculturemedicine,environmentprotectionandenergyexplorationeteAndhaswide

3、lydevelopmentforegroundOnthebasisofcomprehensivelyAnalysessoilenvironmentofourcountrysoilthepaperworksouttheorganiccontaminatedsoilpurifidetechniqueWithimmobilizedmicrooganismoncharcoalmethodt0makeorganismdegradationexpe

4、riments,themotionistOdevelopanewapproachtoimproveorganiccontaminatedsoildegradationratesThemainitemsasfollowing:1Sludgewitchcomedfromzhongshahchenmicalplantaerobisisdemesticating,twostrainsareabletogrowonatrazineasnitrog

5、esourceandhavehighlyeffctivedegradationability,labelled7and32,211坨growthcharacteristicstudyof7and32strainsindicatedthatthcyenterintothestageoflogarithmin12hourandstationaryin36hourThemostappropriategrowthconditionofthetw

6、ostrainswerestuided:theoptimalpHtotwostrainsarebetween80—90andtheyadaptforgrowthinalkalineconditionandarerestrainedinmetaacideconditionButto7strain,theeffectoftemperatureisnotobvious;to32straintheoptimaltemperatureisbetw

7、een2030℃。thegrowthbegaindeclineInthemeantime,thephysiologicalandbiochemicalcharacterwereindentified3TheadsorptiondesorptionofatrazineOncharcoalwasstudiedTheresultsshowedthatcharcoalhadgreatadsorptionabilityThemeawhileads

8、orptiontestWascarriedonbyredearthwith2%carboncontentandshajiangblacksoil、vimcarboncontenttoatrazinewithdifferentconcentrationsTheresultsindicatedtheabsorptionquantityofatrazineWasmolewhencharcoalWasputinsoilcontainingdif

9、ferentconcentrationsatrazine,comparingwiththatinsoilsolutionswithoutcharcoalTheporosityofcharcoalhaveobviousenrichmenttoatrazineandtheenrichmentcapabilityofcharcoaliSmorethansoilCharcoalascarriertOmicroorganismimmobiliza

10、tionaccordingtothestrongadsorptionquantityofcharcoal,thecharcoaladsordanddegradeatrazineinsoilaftermicroorganismisimmobilizedoncharcoalnlemeanwhilecharcoalhaven0secondarypollutinSOitisCanbeascarbonsourcetogrowthdemandofc

11、ropAlltheseprovethatcharcoalCanbeasidealcarriertomicroorganismimmobilization4Thebiodegradationofatrazinewitll40mg/kgconcentrationsinsoilbyimmobilizedsinglestrainandmixstrainWasstudiedTheresultsshowedthatthebiodegradation

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