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1、BioresourceTechnology100(2009)2562–2568ContentslistsavailableatScienceDirectBioresourceTechnologyjournalhomepage:www.elsevier.com/locate/biortechBioethanol,biohydrogenandbiogasproductionfromwheatstrawinabiorefineryconceptaabaa,*PrasadKaparaju,MaríaSerrano,AnneBelindaThomsen,PrawitKongjan,Irini
2、AngelidakiaDepartmentofEnvironmentalEngineering,TechnicalUniversityofDenmark,Building115,DK-2800Kgs.Lyngby,DenmarkbBiosystemsDepartment,RISØ-DTU,Building301,DK-4000,Roskilde,DenmarkarticleinfoabstractArticlehistory:Theproductionofbioethanol,biohydrogenandbiogasfromwheatstrawwasinvestigatedwit
3、hinabior-Received29June2008efineryframework.Initially,wheatstrawwashydrothermallyliberatedtoacelluloserichfiberfractionReceivedinrevisedform10November2008andahemicelluloserichliquidfraction(hydrolysate).Enzymatichydrolysisandsubsequentfermenta-Accepted11November2008tionofcelluloseyielded0.41g-e
4、thanol/g-glucose,whiledarkfermentationofhydrolysateproducedAvailableonline8January2009178.0ml-H2/g-sugars.Theeffluentsfrombothbioethanolandbiohydrogenprocesseswerefurtherused3toproducemethanewiththeyieldsof0.324and0.381m/kgvolatilesolids(VS)added,respectively.Addi-Keywords:tionally,evaluationo
5、fsixdifferentwheatstraw-to-biofuelproductionscenariashowedthateitheruseofBiorefinerywheatstrawforbiogasproductionormulti-fuelproductionweretheenergeticallymostefficientpro-BioethanolBiogascessescomparedtoproductionofmono-fuelsuchasbioethanolwhenfermentingC6sugarsalone.Thus,Biohydrogenmultiplebi
6、ofuelsproductionfromwheatstrawcanincreasetheefficiencyformaterialandenergyandHydrothermalpretreatmentcanpresumablybemoreeconomicalprocessforbiomassutilization.Ó2008ElsevierLtd.Allrightsreserved.1.Introductionnecessarytodisrupttheplantcellwall(lignin)inordertoimproveenzymaticdigestibility(Fanet
7、al.,2006).ThethermalpretreatmentLignocellulosicmaterialsfromagricultureandforestmanage-ofbiomassresultsintwomainstreams;thesolidfractionmainlymentarethelargestsourcesofhexose(C-6)andpentose(C-5)sug-consistingofcellulose(hexose:glucose)(Klinke