LIFE CYCLE ASSESSMENT OF THE PRODUCTION OF SOFT DRINK PET BOTTLES AND THEIR POST-CONSUMPTION MANAGEMENT IN THE CONTEXT OF THE FEDERAL DISTRICT
life cycle assessment, returnable bottle, bottle-to-bottle, PET bottle
Plastics are materials that are present in various activities in everyday life. Plastic waste, in turn, has been found in several cleaning actions around cities. PET bottles are one of the most found items in this type of activity. Proposing new alternatives for managing PET waste is urgent, not only because of the pollution impacts but also because of the climate impacts and the extraction of resources for its manufacture. In the Federal District, 19 Mg of PET waste are produced annually, sent for recycling as bottle-to-fiber (B2F) to be incorporated mainly in the textile industry. Through the Life Cycle Analysis application, the impacts of abiotic resources depletion and climate change related to production and final disposal towards the end-of-life of the DF soft drink PET bottle were evaluated. The study characterized the current scenario of the soft drink PET bottle, i.e., evaluated the current PET production model and its post-consumption destination, evaluating alternative proposals to achieve better environmental performance. The results indicated that adopting returnable PET bottles has a higher potential for impact mitigation. Considering the annual production of soft drinks in DF, around 11,610 tons of CO2 eq and 68,400 kilograms of Sbeq can be avoided annually. The most significant impacts are associated with transportation for waste collection, which should be optimized to obtain better environmental performance, i.e., lower impacts. It is recommended that future studies evaluate and compare other treatment technologies as management options for PET waste, such as chemical recycling, which has been growing and becoming more feasible in recent years. Further research should focus on evaluating other soft drink packaging materials, such as aluminum cans and glass bottles, compared to PET bottles.