輻照預(yù)處理提高小麥秸稈酶解產(chǎn)糖的研究.pdf

1、湖南大學(xué)碩士學(xué)位論文輻照預(yù)處理提高小麥秸稈酶解產(chǎn)糖的研究姓名：沈志強申請學(xué)位級別：碩士專業(yè)：環(huán)境工程指導(dǎo)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