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Cells with parameter information used in input to LCA calculations
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Cells Calculated by the information in green
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Common Data: 1 single clothespinTransportation Emission Factors 1st Case
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Life Cycle Assessment: Inventory AnalysisParameterUnitValueParameterUnitValue
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Weight of Wood (bth arms)kg0.006Emission: MYTTP - CNNSAkg CO₂e (per TEU)265
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Weight of Steel (spring)kg0.001TEU Payload Capacity kg28300
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TEU Volume33.2
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Grams to kg conversion factor  0.001 
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302 Steel Emission Factor in processingkg CO₂-eq  0.001GHG Emissions of 2 TEUs kg CO₂e (per TEU)530
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Birch Wood Emission Factor in processingkg CO₂-eq 0.012
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Clothespin Emission Factor in processingkg CO₂-eq 0.013Transportation Emission Factors 2nd Case
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ParameterUnitLarge TruckSmall Truck
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Energy IntensityMJ per tkm1.656.83
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GHG Intensitykg of CO2-eq per MJ0.0710.067
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GHG Intensity: A*Bkg of CO2-eq per tkm0.117150.45761
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Multiplier for external impacts  1.51.5
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Total GHG Emissionskg CO₂e (per TEU)0.1760.686
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ASSESSMENT BY STAGE: CRADLE-TO-GRAVE
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1) SOURCING3) TRANSPORTATION4) Manufacturing
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INPUT: raw materials extraction OUTPUT: GHG Emissions (kg CO2 equivalent)INPUT: energy and material flowsOUTPUT: kg CO₂-eq per: TEU, 100kg, tkm…INPUT: energy and material flows
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Extraction ofHow?Activity EmissionsUnitChemical CompoundsGHG Extraction Emissions 1st Case. Before Processing - Transportation of raw birch wood from Malaysia 🇲🇾 to China 🇨🇳
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CarbonAdded as graphite0.2kg CO₂-eq Marine transportation
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MagnaneseMined from Mn Ores1.5kg CO₂-eq 302 Stainless Steel (AISI 302)TOTAL
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PhosphorusMined from phosphate rock0kg CO₂-eq Carbon0.15 max0.0257kg CO₂-eq Selection of the marine route using container ships
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SulfurResidual from ores0kg CO₂-eq Magnanese2.00 maxDeparture: Port of Tanjung Pelepas (MYTTP) -> Arrival: Nansha Port, Guangzhou (CNNSA)
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SiliconFrom quartz2kg CO₂-eq Phosphorus0.045 max
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NickelNickel ored mined, smelted22kg CO₂-eq Sulfur0.030 maxFluentcargo.com
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CelluloseExtracted naturally0kg CO₂-eq Silicon0.75 max
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LigninNaturally part of wood0kg CO₂-eq Nickel 8-10 max
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HemicellulosesNaturally part of wood0kg CO₂-eq 
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PentosansNaturally part of wood0kg CO₂-eq Birch WoodTOTAL
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Cellulose0.420kg CO₂-eq 
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Lignin0.19
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2) PROCESSING in China 🇨🇳Hemicelluloses0.27
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Pentosans0.18
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INPUT: processing raw materials Extractives0.2-0.3
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OUTPUT: GHG Emissions (kg CO2 equivalent)
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302 Stainless Steel (AISI 302)
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Processes: Emissions: Chemical FormulasChemical Name
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· MeltOxidation of alloysFeO, Fe₂O₃, Fe₃O₄ + Cr₂O₃ + NiOIron Oxides + Chromium(III) oxide + Nickel(II) oxide
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· CutMetal particlesFe, Cr, Ni, MnIron, Chromium, Nickel, Manganese
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· Bend into springMachinery Energy usedCO₂, H₂O, NOx, SOx.Carbon Dioxide, Water Vapor, mix of NO & mix of SOmap.openseamaps.org
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Birch WoodCalculation of GW for Case1:
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Processes: Emissions:Chemical FormulasChemical NameEstimated emissions of the route:265
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· Dry Machinery Energy usedCO₂, H₂O, NOx, SOxCarbon Dioxide, Water Vapor, Nitric Oxide, Sulfur MonoxideNumber of TEUs 1
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· CutWood dust (C₆H₁₀O₅)ₙ and (C₅H₈O₄)ₙCelluloses and Hemicelluloses
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· CarveMachinery Energy usedCO₂, H₂O, NOx, SOx.Carbon Dioxide, Water Vapor, Nitric Oxide, Sulfur MonoxideEstimated emissions of the route:530kg CO₂-eq per TEU
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Number of TEUs2
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Linking the Chemical Formulas with the GWP table to obtain GWP values
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ChemicalOcurrence NumberGWP table valueTotal GWPCalculation of GW:
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CO₂3 (bend, dry and carve )13GW in 302 Stainless Steel = 0.001kg CO₂-eq per steel processed2nd Case. Transportation across China 🇨🇳
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GW in Birch Wood = 0.012kg CO₂-eq per wood processedRoad transportation
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CO₂ in Steel1TOTAL = 0.013kg CO₂-eq per clothespin
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CO₂ in Birch Wood2Routes through the Life Cycle stages: (assumption about distances)
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Raw Birch Wood from Nansha Port to Factory1km2910%100%0.175725
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Raw 302 Steel from Alibaba supplier to Factory1km1230%100%0.175725
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Factory1 to recycling centerkm19100%0%0.686415
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Routes UnitDistanceSmall Truck Share
Large Truck Share
Weighted Avg
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kg of CO2-eq per tkm
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Calculation of GW for Case2:
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Using Raw Material Emissions0.0045161325kg of CO2-eq per clothespin
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Using Processing Emissions0.008923395kg of CO2-eq per clothespin
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3rd Case. Distributing to The Netherlands
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Factory1 final clothespin distribution to The Netherlandskm
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Clothespin user to sorting facilitykm
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Sorting to recycling centerkm
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Sorting to final locals with final clothespin productkm
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