(42寸液晶电视价格)42寸液晶电视导购指南

LifeCycleAssessment:AToolforEvaluatingandComparingDifferentTreatmentOptionsforPlasticWastesG.Dodbiba1,K.Takahashi1,T.Furuyama2,J.Sadaki1,T.Kamo3,andT.Fujita11.DepartmentofGeosystemEngineering,TheUniversityofTokyo,Japan2.DepartmentofEarthResourceEngineering,KyushuUniversity,Japan3.NationalInstituteofAdvanceIndustrialScienceandTechnology,Japan聚划算(ISO14040)2.LCAofPlasticWastesfromDiscardedTVSets3.ConcludingRemarks1.LCAMethodology(ISO14040)2.LCAofPlasticWastesfromDiscardedTVSets3.ConcludingRemarksOutlineScopeofLCA…toevaluateorcomparethelifecycleof“products”Life-CycleStagesandBoundaries(Source:EPA,1993)RawmaterialsacquisitionManufacturingUse/Re-use/MaintenanceRecycle/WastemanagementSystemboundaryInputsWatereffluensAirbornemissionsSolidwasteOtherenviromentalreleasesUsableproductsOutputsEnergyRawmaterialsGoalDefinitionandScopeInventoryAnalysisImpactAssessmentReportingtheresultsDefinitionofproducts;Choiceofalternatives;Definitionofsystemboundary;Datacollection;Theoreticalcalculation;EvaluationReportingtheresults;Proposeimprovement;Methodology:LifeCycleAssessment,(ISO14040)Phase1:Phase2:Phase3:Phase4:(Source:Consoliet.al.,1993)AimofStudy…toevaluateandcomparedifferentrecyclingoptionsforplasticwastesfromoldTVsetsincontextofLCASteel12.0%Copper8.0%Aluminium2.0%Other13.5%Circuitboard3.0%Plastics10.5%Glass51.0%CompositionsofaTVSet(weight%)PVC33.3%PE9.5%PS57.1%(Source:O.Murakami,MitsubishiElec.ADVANCE,pp.6-9,2001).Source:AssociationforHomeElectricalAppliancesofJapan:Howtorecycleplasticwastes?Objective…tocomparetwodifferentrecyclingoptionsforplasticwastesfromoldTVsetsincontextofLCA.Option1:Incinerationofplasticsforenergyrecovery(alsoknownasthermalrecycling)Option2:Sortingplasticsformechanicalrecycling(alsoknowasmaterialrecycling)1.LCAMethodology(ISO14040)2.LCAofPlasticWastesfromDiscardedTVSets3.ConcludingRemarksOutlineGoalDefinitionandScopeInventoryAnalysisImpactAssessmentReportingtheresultsDefinitionofproducts;Choiceofalternatives;Definitionofsystemboundary;Phase1:(Source:Consoliet.al.,1993)Methodology:LifeCycleAssessment,(ISO14040)a.SubjectofthestudyareplasticwastesfromoldTVsets(display:25”,weight=30kg),whichcontain:b.Functionalunit:isdefinedas1.8millionTVsetsperyear,overaperiodof10years.Phase1ofLCA:GoalDefinitionandScope1.PS(6.0wt%,i.e.1.80kg),2.PVC(3.5wt%,i.e.1.05kg),3.PE(1.0wt%,i.e.0.30kg).Systemboundary4)ProductionofElectricity2)ProductionofPVC5)ProductionofTVsetLandfillingEmissiontoair/waterTransportation1)ProductionofPSResources6)UseofTVsetCollectingandDisassemblingTVsets/Sortingprocess3)ProductionofPEProductionofSteel,Cooper,Aluminium,Glass,etc.Glass,Al.,Cu.,Steel,etc8)Incineration/EnergyrecoveryOption2Option17)SeparationofPlasticsdMina1,5a2,5a3,5dMMwMmid1.16*10-3[td(1-cr)(a1,5H1+a2,5H2+a3,5H3)]PlasticwastesWastePowerGeneratorRecoveredPVCRecoveredPERecoveredPSSpecialcases:(1).Energyrecovery,i.e.c=0%;(2).Mechanicalrecycling,i.e.c=100%andr=67%Life-cycleofplasticsforTVsetsGoalDefinitionandScopeInventoryAnalysisImpactAssessmentReportingtheresultsDatacollection;Theoreticalcalculation;Phase2:(Source:Consoliet.al.,1993)Methodology:LifeCycleAssessment,(ISO14040)Thedataoftheprocesses,namely:werefromtheLCAdatabaseoftheJapanEnvironmentalManagementAssociationforIndustry(JEMAI).Phase2ofLCA:Inventoryanalysisa)Datacollection1.productionofPS,2.productionofPVC,3.productionofPE,4.productionofelectricity,5.productionofaTVset,Option1:Incinerationof1kgplasticmaterialEnergygenerated:PS–9,604kcal/kgPVC–4,300kcal/kgPE–11,140kcal/kgEmission:2,640gCO2/kgSource:K.Krekeleretal.,Kunstsoffe,55/10,pp.758,1965Phase2ofLCA:Inventoryanalysisa)DatacollectionSource:MinistryofEnvironmentofJapan,Guidelines,2004PS&PVC&PETribo-cycloneElectrodesShredderSievePEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveUndersizeOversize++-PowerSupplyPVC-PEPSPEPVCAir-tableSieveU