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Plastic recycling is the processing of plastic waste into other products. [1] [2] [3] Recycling can reduce dependence on landfills, conserve resources and protect the environment from plastic pollution and greenhouse gas emissions. [4] [5] [6] Recycling rates lag behind those of other recoverable materials, such as aluminium, glass and paper.
Plastic recycling is the process of recovering scrap or waste plastic and reprocessing the material into useful products, sometimes completely different in form from their original state. For instance, this could mean melting down soft drink bottles and then casting them as plastic chairs and tables. [ 83 ]
Chemical recycling involves breaking down the plastic into its monomers which can be used as building blocks for new materials. Because of the use of more energy for the chemical reactions to take place, chemical recycling produces more emissions than mechanical recycling. [17] This process is also known as "Tertiary" or "Advanced" recycling.
Depolymerization is a very common process. Digestion of food involves depolymerization of macromolecules, such as proteins. It is relevant to polymer recycling. Sometimes the depolymerization is well behaved, and clean monomers can be reclaimed and reused for making new plastic. In other cases, such as polyethylene, depolymerization gives a ...
Plastic recycling is the processing of plastic waste into other products. [22] [23] [24] Recycling can reduce dependence on landfills, conserve resources and protect the environment from plastic pollution and greenhouse gas emissions. [25] [26] [27] Recycling rates lag behind those of other recoverable materials, such as aluminium, glass and paper.
This process is associated with an increase in entropy. For most polymers, thermal depolymerization is chaotic process, giving a mixture of volatile compounds. Materials may be depolymerized in this way during waste management, with the volatile components produced being burnt as a form of synthetic fuel in a waste-to-energy process.
The next step or preferred action is to seek alternative uses for the waste that has been generated, i.e., by re-use. The next is recycling which includes composting. Following this step is material recovery and waste-to-energy. The final action is disposal, in landfills or through incineration without energy recovery. This last step is the ...
Traditional recycling methods are not sufficient and expensive because this separation has to be done manually and product by product. [2] VinyLoop is a recycling process which separates PVC from other materials through a process of dissolution, filtration and separation of contamination. A solvent is used in a closed loop to elute PVC from the ...