Paper cup vs Plastic cups
Paper vs plastic
Polylactic acid (PLA) is a biodegradable bio-plastic coating used on some paper cups. PLA is a renewable resource and is certified compostable, which means that when it biodegrades, it does not leave behind any toxic residues. Although PLA-lined cups are the only paper cups which can be composted fully, they can contaminate the waste stream, reportedly making other recycled plastics unsaleable.
All paper cups can only be recycled at a specialised treatment facility regardless of the lining.