Polystyrene wastes can be converted into basic chemicals and fuels by two chemical recycling methods:cracked alone or together with other plastic wastes.

In this paper, chemical recycling processes of waste plastics using supercritical water as reaction solvents were described.

This article gives an overview of research developments of physical recycling methods,chemical recycling methods and other recycling methods for polyurethane wastes.

Experimental study on nitrogen and phosphorus removal and sludge reduction with phosphorus recovery by the chemical process;