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1、BioresourceTechnology104(2012)37–43ContentslistsavailableatSciVerseScienceDirectBioresourceTechnologyjournalhomepage:www.elsevier.com/locate/biortechAcetateandpropionateimpactonthemethanogenesisoflandfillleachateandthereductionofcloggingcomponentsa,⇑bac
2、aS.Lozecznik,R.Sparling,S.P.Clark,J.F.VanGulck,J.A.OleszkiewiczaUniversityofManitoba,DepartmentofCivilEngineering,Winnipeg,CanadaMBR3T5V6bUniversityofManitoba,DepartmentofMicrobiology,Winnipeg,CanadaMBR3T2N2cChiefTechnicalOfficer,ARKTISSolutionsInc.,117
3、LoutittSt.,Yellowknife,CanadaX1A3M2articleinfoabstractArticlehistory:Syntheticleachatewithdifferentinitialconcentrationsofacetate(500–2500mgHAc/L)andpropionateReceived23June2011(500–3500mgHPr/L)wastreatedwithactivebiomassacclimatedtolandfillleachateunde
4、ranaerobicReceivedinrevisedform27Septembermesophilicconditionsfor72h.Methanogenesiswasobservedwithinallsamplesduringthefirst48h.2011Thegreatestremovalofacetate(80–100%)andpropionate(15–35%)wasachievedintestswithinitialAccepted28September2011concentratio
5、nsrangingfrom1500to1900mgHAc/Landfrom1000to1800mgHPr/L.ConcurrentwithAvailableonline8October2011theremovalofacids,pHincreasedbetween0.3and0.45units,toabovethethresholdpHforprecipitation2+ofCaCO3.Therefore,some50–70%ofdissolvedCawasremovedfromsolution.T
6、hisstudysuggeststhatKeywords:byusinganequalizationtank(priortotheanaerobicdigester)tomaintaintheacetateandpropionateLeachatetreatmentCloggingconcentrationstowithintheiroptimumrangewouldhelptoalleviatecloggingthroughtheremovalof2+Acetateandpropionateinl
7、andfillleachatedissolvedCaandmaximizingCH4production.BiogasÓ2011ElsevierLtd.Allrightsreserved.Methanogensandsynthrophs1.Introductiontobeprimarilycomposedofaveryhardmineralencrustation2+(mainlyCacarbonateminerals),theaccumulationofinertsus-Leachaterecirc
8、ulationinbioreactorlandfillsisalandfillman-pendedsolids(ISS),soilparticles,biologicalmaterialandinsituagementstrategythathasbeenemployedtoenhancebiologicalbiofilmdevelopment.Inaddition,theadhesivepropertiesofextra-degradationoforganicrefus
