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1、BioresourceTechnology102(2011)207–214ContentslistsavailableatScienceDirectBioresourceTechnologyjournalhomepage:www.elsevier.com/locate/biortechLife-cycleassessmentofmicroalgaeculturecoupledtobiogasproductiona,*a,baacaPierreCollet,ArnaudHélias,LaurentLardon,MoniqueRas,Romy-Alice
2、Goy,Jean-PhilippeSteyeraINRA,UR50,LaboratoiredeBiotechnologiedel’Environnement,AvenuedesEtangs,11000Narbonne,FrancebMontpellierSupAgro,2PlaceViala,34060MontpellierCedex1,FrancecNaskeo,LaboratoiredeBiotechnologiedel’Environnement,AvenuedesEtangs,11000Narbonne,Francearticleinfoab
3、stractArticlehistory:Duetoresourcedepletionandclimatechange,lipid-basedalgalbiofuelhasbeenpointedoutasaninter-Received31March2010estingalternativebecauseofthehighproductivityofalgaeperhectareandperyearanditsabilitytoReceivedinrevisedform15June2010recycleCOfromfluegas.Anotheropti
4、onfortakingadvantageoftheenergycontentofthemicroalgae2Accepted25June2010istodirectlycarryoutanaerobicdigestionofrawalgaeinordertoproducemethaneandrecyclenutrientsAvailableonline31July2010(N,PandK).Inthisstudy,alife-cycleassessment(LCA)ofbiogasproductionfromthemicroalgaeChlo-rel
5、lavulgarisisperformedandtheresultsarecomparedtoalgalbiodieselandtofirstgenerationbiodie-Keywords:sels.TheseresultssuggestthattheimpactsgeneratedbytheproductionofmethanefrommicroalgaeareLife-cycleassessment(LCA)stronglycorrelatedwiththeelectricconsumption.Progressescanbeachievedb
6、ydecreasingthemixingMicroalgaeBiogascostsandcirculationbetweendifferentproductionsteps,orbyimprovingtheefficiencyoftheanaerobicChlorellavulgarisprocessundercontrolledconditions.Thisnewbioenergygeneratingprocessstronglycompeteswithoth-ersbiofuelproductions.Ó2010ElsevierLtd.Allrig
7、htsreserved.1.Introductionfertilizersconsumption,harvestingandoilextractionfromalgaerepresentahighenergydebtwhichmightjeopardizetheoverallInacontextofclimatechangeandfossilfueldepletion,thereisainterestofalgalbiofuel.AccordingtoMolinaGrimaetal.(2003),risinginterestofindustriala
8、ndacademicactorsinrenewableenergytheharvestingcostcanr
