Life-Cycle Assessment of Recycling Postconsumer High-Density Polyethylene and Polyethylene Terephthalate

Table 13

Comparison of PET flake and HDPE pellet production with other studies.

Output: 1 ton of the recycled PET flake
	Present study	Arena et al. [11]	Shen et al. [17]	Detzel et al. [38]
Nonrenewable energy (GJ/ton flake)	11.3	7.97	13	NA
(kg CO2 eq./ton flake)	660	635	310–720	NA
Yield of PET flakes (or material efficiency, wt.%)	80	76	75	80
Output: 1 ton of the recycled HDPE pellet
	Present study	Kreiger et al. [39]
Energy demand (MJ/kg)	8.65	8.74
(kg CO2 eq./ton HDPE)	630	520