Development of a continuous separation process of Rsd(Pet-Al) composite in basic conditions

Abstract

The recycling of a solid residue made from polyethylene and aluminum foil in food brick packaging Rsd (Pet-Al), 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. 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.

Keywords

• Separation process
• Packaging wastes
• Basic
• Recycle