Table 2.

Aggregated inventory per life cycle stage and related assumptions *. CF, carbon fibre; MWCNT, multi-walled carbon nanotube; MSW, municipal solid waste.

	Materials	Manufacture	Use	End-of-life
Sleekfast sailing boat	Input CF = 10.5 kg Sicomin SR1500 (0.06 wt% MWCNTs) = 10 kg PVC foam = 1.5 kg Epoxy gelcoat = 4 kg Electricity = 368 MJ/kg CF Electricity = 1104 MJ/kg CNTs Output/emissions to air/water (see Table A2 in Appendix A)	Input Auxiliaries = 2.72 kg Scraps = 1.47 kg (6%) Electricity = 230 MJ (curing) Manufacture waste -Scrap waste (6%) hazardous incineration -Aux. waste (96%) hazardous incineration and 4% recycling of plastic	Input Epoxy gelcoat = 30 kg (for maintenance, 2 kg biannually for 30 years’ lifetime)	Scenario 1: Landfill Input 100% inert waste [75] Electricity = 0.27 MJ/kg Scenario 2: Hazardous waste incineration Input Electricity = 0.27 MJ/kg Scenario 3: MSW incineration with energy recovery Input Electricity = 0.27 MJ/kg Avoided products Electricity = 3.1 kWh [76] Heat for reuse = 32 MJ/kg [77] Scenario 4: Recyclingvia pyrolysis Input Electricity = 0.27 MJ/kg Electricity = 30 MJ/kg [61] Avoided products CF recovery 60% [78] Heating oil = 30 MJ/kg [77]
Handbrake lever	Input CF = 0.12 kg Epoxy resin = 0.02 kg CNTs = 0.01 kg Electricity = 368 MJ/kg CF Electricity = 1.1 MJ/kg CNTs Output/emissions to air/water (see Table A1 in Appendix)	Input Pack. mat. = 1.272 kg Electricity = 18 MJ (curing) Manufacture waste -Scrap waste (2%) treated as MSW (incineration) -Pack. waste (100%) is recycled	Assumptions: -service lifetime of handbrake lever equals to motorcycle lifetime -no maintenance -no repairing

* More details are provided in Table A1 and Table A2 in Appendix A.