白腐真菌降解褐煤的研究

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1、安徽理工大学硕士学位论文白腐真菌降解褐煤的研究姓名：李俊旺申请学位级别：硕士专业：矿物加工工程指导教师：张明旭20090601AbstractAbs仃actChinahasabundantcoalresources，withlow-levelresourcesofligniteandweatheringcoalinparticular．Ifligniteisburneddirectly，itsthermalefficiencyandvalueofindustrialapplicationislow．Whenpiledup

2、open—airforalongterm，lignitenotonlycausesawasteofenergy，butalsoleadstoenvironmentalpollutioneasily．Thebiodegradationofligniteisailewcrosssubject，andisalsoaprospectivefundamentalresearchinthefieldofBio—miningtechnology．Thepaperselectswhiterotfungiasthebioconversio

3、nbacteriaofYi—Malignitewhichhastheabilitytodegradelignin．Italsostudiestheculturingconditionsandgrowthfeaturesofwhiterotfungi．Theinfluenceofthesizeofcoal，quantityofbacterium，concentrationofcoalslurryandtimeofdegradationisstudiedintheexperimentsoflignitebiodegradat

4、ion．Theresultsofexperimentsindicatethatthesizeofcoalhasagreateffectonlignitebiodegradation,andthequantityofbacterium，theconcentrationofcoalslurryandthetimeofdegradationhassomeeffect．Intheselectedexperimentconditions，theoptimumlevelofeveryfactoris：thesizeofcoal一0．

5、2mm；thequantityofbacterium10mL；theconcentrationofcoalslurry0．99／50mL；thetimeofdegradation12d．Inordertoimprovetheefficiencyoflignitedegradation，wemutagenesiswhiterotfungibymeansofultravioletmyintheresearch．TheresultsshowthatWhiterotfungiissensitivetoultravioletray

6、．Thelethalityrateofsporesofwhiterotfungibyultravioletrayreach89．50percent、啊Ⅱlradiationtime160s．Andtheefficiencyofcoaldegradationisthebestwhenthedeathrateis58．80percentradiated丽m40s，诚tIlthedegradationrate37．6percentofYi—Innligniteand51．62percentoflignitepretreated

7、withnitricacid．MethodsofXRD、FTIRandelementanalysisareusedtoanalysetheproductsoflignitedegradation．Theresultsindicatethatthedegreeofpolymerigationofaronaticnucleusdecreasedaswellasthemolecularweightsafterlignitewasbiodegradedbywhiterotfungi．Atthesametime，weanalyse

8、thelignitedagradationmechanismpreliminarily．Weconcludethatitisalloxidationandhydrogenationprocesstodegrade111安徽理：I：人学硕：}二论文lignitebywhiterotfungi，containingboⅡ