MIXED PLASTIC WASTE RECYCLING SOLUTINS-1 (plastic is visible or hidden in the EEE due to insulation, strength, resistance, flexibility and durability)
Thermoset plastics can’t be remelted and formed into new products (circuit boards, switch housings, electrical breakers etc)
Termoplastics can be remelted and formed in new products.
Recyclibility of termoplastic resins is better than termoset resins.
TVs: HIPS, ABS, PPE, PVC, PC
Computers: ABS, HIPS, PPO, PPE, PVC, PC
Micellaneous EEE: HIPS, ABS, PVC, PPE, PC
There are 3 ways of post consumer plastic recycling in the EEE.
1. Chemical Recycling: Use mixed-waste plastics as raw materials for petrochemical processes or as a reductant in a metal smelter. There are 3 processes
a.Depolimerization and Conversion (350-400 C) (Syncrude oil (80%), gas (10%) and solid waste (10%) are produced and sent to petrochemical proceses).
b. Coke Oven Process (carbonization, products are 20% coke, 40% tar, %40 gases (metan and hydrogen)(Japan-Nippon Steel) .
c. Reducing agent for Fe2O3 (instead of coke) in blast
HIPS: high impact polystyrene, ABS: acrylonitrile butadine styrene (impact protection), PPO: polyphenylene oxide (high temperature), PE: Polyethylene , PVC: polyvinyl cholaride (insulator), PC: polycarbonate, PPE: poly-phenylene ether.