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- W4229458085 endingPage "136881" @default.
- W4229458085 startingPage "136881" @default.
- W4229458085 abstract "• PLA can be burned as a fuel because the incineration is regard as carbon neutral. • Pyrolysis of PLA with MgO and its co-pyrolysis with biomass is very promising. • Alcoholysis of PLA is considered to be the most suitable method for chemical recovery of PLA. • The hydrolysis of PLA can upcycle lactic acid with low energy consumption compared to that from starch fermentation. • The products have higher added value and wider usages during ammonolysis of PLA. Polylactic acid (PLA) is currently the highest production of all bio-based plastics globally. Its production will increase year by year to replace part of petroleum-based plastics to reduce environmental pollution and curb carbon emissions. However, the raw materials for synthesizing PLA mainly come from sugary foods, and mass production will pose a threat to food security. In addition, the degradation rate of PLA is slow, and a large amount of waste PLA accumulation still causes pollution. As a high-quality carbon source, compared with direct degradation, recycling PLA is a more green and environmentally friendly method. Because PLA can not only be depolymerized into raw materials for synthesizing PLA but also can be upcycled to chemicals required by various industries, which helps to reduce the use of petroleum resources. In addition, the recycling of PLA helps to reduce CO 2 emissions, because the source of PLA does not consume petroleum resources, but rather fixes CO 2 in the air. This review summarizes the works of upcycling waste PLA as an alternative carbon source for energy and other chemicals from the perspectives of tertiary and quaternary recycling, which provides a reference for the proper treatment of a large amount of waste PLA." @default.
- W4229458085 created "2022-05-11" @default.
- W4229458085 creator A5009556372 @default.
- W4229458085 creator A5016576930 @default.
- W4229458085 creator A5035085963 @default.
- W4229458085 creator A5051459316 @default.
- W4229458085 creator A5076709767 @default.
- W4229458085 date "2022-10-01" @default.
- W4229458085 modified "2023-10-10" @default.
- W4229458085 title "Progress in upcycling polylactic acid waste as an alternative carbon source: A review" @default.
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