Why are biodegradable and compostable objects not recyclable? Biodegradable and compostable bioplastics are not recyclable given that they're designed to break down in certain disorders. The other kind is polyhydroxyalkanoate or PHA. This item is genetically engineered or created by microorganisms from organic and natural materials. For that reason PHA https://biodegradablebags63713.tokka-blog.com/18747162/facts-about-biodegradable-bags-revealed