Plastic Disposal Technology
The technologies used for plastic waste disposal include:
1. Plastic Granules manufacturing and remoulding: This method of recycling involves processing of a waste/scrap into a new plastic product or form. Multi-layered and mixed plastic waste cannot be recycled using this process. Only segregated plastic waste with plastic purity of more than 95% can be recycled using this process. More than 93% of plastic waste generated globally is not suitable for recycling using this process and most of that ends up in landfill dumpsites.
2. Pyrolysis & Hydrolysis: This is a chemical method of recycling plastic waste. Tertiary recycling involves the production of basic chemicals and fuels from plastics waste using pyrolysis of hydrolysis as a process. this method of recycling it suitable for all types of plastic waste including the multilayer plastic waste for which first two methods of recycling are not suitable. 80% of plastic waste generated these days cannot be recycled using primary or secondary method of recycling. Hence, tertiary method of recycling is the only sustainable method for disposal of this 80% of plastic waste. This method of recycling allows us to recover the energy from plastic waste without burning the plastic waste.
3. Burning/Incineration: Also burning and incineration of plastic is banned in most of the developed & developing nations including India. This method retrieves the energy content of waste/scrap plastics by burning/incineration. The problem with this process is generation of very high levels of pollution including emission of harmful chemicals like dioxane and furans.