優(yōu)勢菌處理含高濃度苯胺廢水機理的研究.pdf

1、南開大學碩士學位論文優(yōu)勢菌處理含高濃度苯胺廢水機理的研究姓名：周霞申請學位級別：碩士專業(yè)：微生物學指導教師：侯文強佟樹敏20030505南開大學碩士研究生畢業(yè)(學位)論文英文摘磷AbstractAnilineisoneofthemostimportantindustriallyproducedaminesItismostWidelyusedforthemanufactureofpolyurethanes，rubberandpestici

2、des(I[tanahan，1989)TheyhavebeenreportedtoexhibitsignificantmammalJantoxicityandacutetoxiceffectsoffish：thus，theyareconsideredimportantenvironmentalpollutantsAlthoughanilinesaredecomposedbyavarietyofphysicochemicalprocess

3、essuchasevaporation，autooxidation，photooxidationandchemicalbindingthemajorpathwayfortheirremovaifromaquaticenvironmentsiSthroughbiodegradationWeattainedahigh—performanceaniline—degradingbacterialconsortiumNKSItcontainstw

4、oaniiine—degradingbacterialspecies，namedNKSlandNKS2respectivelyHereinwereportedsomephysiologicalandbiochemicalcharacteristicsofNK8Bytestinsthekeyenzymeactivityintheprocessoftheanilinedegradation，weunderstandthepathwayfor

5、NKStodegradeanilineFinallywelocalizedthegenesthatareinvolvedinthiSprocessTheresultsofthephysiologicalandbiochemicalcharacteristitsofNKSshowedthat：Ahigherinoculationresultedabetterdegradationeffect，especiallyinthefirsthou

6、rsofthedegradationAccordingtothegrowthcurveofNKS，asthereductionofaniline，theconcentrationofthedissociativebacteriumbecameIowerThebacterialconsortiumwascapableofgrowingonanilinemediumhigherthan5000mg／LItonlytook36hourstod

7、egradealloftheanilineabout2000mg／LTheoptiumconeentrationofanilinewas3000mg／LTheoptimumtemperatureforNKSgrowthandanilinedegradationwas30℃andtheoptimumpHforNKStogrowanddegradeanilinewas7Fiveheavymetalionscouldinhibitthegro