Valorization of Pet-Al Composite Obtained From Packaging Waste in Basic Conditions

The recycling of Risidu Pet-Al (a laminated foil made from polyethylene and aluminum foil in food brike packaging) continues to be a challenge. Despite the fact that previous studies proposed green solutions for the recycling of the Pet-Al composite, the handicaps linked to the increase of the cost of the reagents involved in the recycling mechanism, the complexity of the steps, resulting in products with a critical aspect, really reflect a problem. The growing concern about environmental impacts such as greenhouse gas emissions from inceneration treatment is distinctly clear to the scientific community. This article involves chemical treatment by adding a strong base NaOH or KOH as the dissolving reagent, Followed by the addition of the strong acid HCl . The birth of a neutral environment promotes the recovery of aluminum salts as well as sodium (or potassium). The released H2, polyethylene and cardboard are also products regenerated by this recycling.The study contributes to the optimal conditions of time concentration temperature as well as the mode of separation. The recovered salts are identified, however their purity remains an important factor of quality before adapting their use.