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1、湖南大學碩士學位論文輻照預處理提高小麥秸稈酶解產(chǎn)糖的研究姓名:沈志強申請學位級別:碩士專業(yè):環(huán)境工程指導教師:楊春平王建龍20080425AbStractTherenewableenergyisan,alternatiVewaytocopewiththecurrentenergyshortageandtheclimatechangeThebiomassenergy,asoneoftherenewableenergysource,hasr

2、eceivedincreasingattentioninrecentyearsThebottleneckoftheutilizationofbiomassfortheproductionofbiofuelorbioproductsisthedisruptionofcellulose,usuallythechemicalhydrolysis,mechanicalabrasionmethodshaVebeenusedHoweverthere

3、aresomedrawbacks,suchaslowefficiencyandthenegatiVeeffect0fhydrolysisproductsonthefurtherbioconVersionThereforeitisnecessarytodevelopthenewtechnologyThispaperreportedapretreatmenttechnology,thatls,theapplicationofionizing

4、ifradiationtechnologyfbrthepretreatmentofwheatstrawt0improvetheirenzymatichydrolysisItisshownthatirradlatloncancausesignificantbreakdownofthestructureofwheatstrawTheweightlossofwheatstrawincfeasedandthesizedistributionaf

5、tercrushingm0VedtofinepartidesateleVatedirradiationdosesAsynergisticeffectbetweenirradiationandcrushingwasobserVed,withaglucoseyieldof1024%atadoseof500kGywithpowderof140meshTheaftereffectofirradiationhadimportantimpacton

6、enzymatichydrolysisofwheatstrawTheaftefeffect(at22ndday)of400kGyirradiationaccountedfor200‘殤oftheinitialeffectforglucoseproduction,andtheaftereffectsof50,100,200(at9thday)and300kGy(at20thday)accountedfor129%,149%,89%and9

7、1%,respectiVely,forreducingsugarproductionGammaraVirradiationandalkalisolutionpretreatmentofwheatstrawanditseffectonenzymatichydrolysiswerealsostudiedinthispaperTheresultshowedthatirradiationcansignificantlydecreasetheco

8、ncentrationofalkalisolutionandshortenthepretreatedtime,thoughthechangesinthephysicalandchemicalpropertiesofonlvirradiatedwheatstrawareindistinctiVelyAsynergisticeffectbetweenirradiationandalkalisolutionpretreatmentwasobs

9、erVed,withareducingsugaryieldof782%(accountedfortheoreticalyield)afterirradiationatadoseof100kGyandthenwith2%NaOHpretreatedfof1hAndtheoptimumcondltlonstorsaccharificationthispretreatedwheatstrawwere50m∥g(ceUulose/substra

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