Abstract
In this paper we present the main technologies developed over the last decades on chemical recycle of PET from a practical and economical point of view. We show details of plants used to carry out solvolitic reactions emphasising steps of purification, which are sometimes not considered when discussing chemical, recycle but which, in fact, are the key feasibility factors. The recycling or modification of PET to obtain monomers and other useful chemicals as intermediates and additives is carefully considered.
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Abbreviations
- 1,2-PG:
-
1,2-propylene glycol
- BD:
-
Butanediol
- DEG:
-
diethylene glycol
- DMT:
-
Dimethyl therephthalate
- EG:
-
Ethylene glycol
- MA:
-
Maleic anhydride
- PET:
-
Poly(ethylene therephthalate)
- PET-R:
-
Post consumer Recycled Poly(ethylene therephthalate) (colour separated and washed)
- TA:
-
Therephthalic acid
- DPG:
-
Dipropylene glycol
- BHET:
-
Bis hydroxy ethyl terephthalate
- BHBT:
-
Bis hydroxy butyl terephthalate
- HDPE:
-
High density polyethylene
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Lorenzetti, C., Manaresi, P., Berti, C. et al. Chemical Recovery of Useful Chemicals from Polyester (PET) Waste for Resource Conservation: A Survey of State of the Art. J Polym Environ 14, 89–101 (2006). https://doi.org/10.1007/s10924-005-8711-1
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DOI: https://doi.org/10.1007/s10924-005-8711-1