Fig. 2: Microwave catalytic depolymerisation of PP and mixed plastics (digged out from landfill site).
From: Highly selective upcycling of plastic mixture waste by microwave-assisted catalysis over Zn/b-ZnO

a Images of plastic waste and corresponding oil products. b, c Products yield and conversion of mixed plastics and PP, respectively. The mass ratio of the catalyst to the plastic was: Zn/b-ZnO: mixed plastics = 10 g: 40 g, b-ZnO: PP = 10 g: 50 g.