BBP (Biodegradable/Bio-based Plastics) should be managed independently of general plastics during and after their use. However, in reality, it is difficult to put a clear line between their uses. In the case of the event that BBP is mixed in other plastics, it is necessary to thoroughly consider its effect. Experimental results of wet sink-float separation between PHBH, which is one of the BBP, and PE/PET showed good separation performance. Mechanical properties of recycled PE/PET were not significantly affected by the contamination of 1% PHBH. However, since the data on the physical separation for BPP is insufficient in the world, it is necessary to continuously study the influence of the shape and surface properties for reliable plastics circulation.
