As a result of the requirement to discover solutions to manage plastic waste, different recycling methods have actually been established, as there are different types of plastics, the splitting up and recycling are different. Recycling of plastics can be Physical, Chemical, Thermal as well as in the last situation final disposal in a landfill. The technique of any one of these depends upon the outcome of an Ecobalance (Product Life Cycle Analysis) research study, which enables to identify which type of recycling is one of the most ecologically audio.
For HDPE the only one that is not advised is Chemical Recycling, as it is not financially as well as eco-feasible. Mechanical as well as Thermal Recycling is much better.
Mechanical recycling
The mechanical recycling of HDPE consists of the function as well as storage of the products, option of the plastic or recognition, crushing of the same so that the item is in the type of pellets, in order to incorporate it back right into the production chain, shutting the circle of clean manufacturing. It is recommended that the product be washed prior to the choice of the plastic in order to remove pollutants that might substantially impact the buildings of the recycled HDPE.
The most crucial action is the sorting of the HDPE, which can be done at the recycling site called “separate collection” or at purpose-built collection websites. The various approaches made use of for the sorting and also recognition of HDPE have already been described over.
This kind of recycling is not as damaging as thermal recycling and also is recommended when the HDPE is reasonably devoid of impurities.
Thermal recycling
It is a destructive method that contains the burning of plastic, transforming the waste right into gases, ashes and slag. This is carried out in order to get energy, considering that plastics are compounds with a high calorific value. In order to carry out this strategy, ecobalance researches need to initially be accomplished to figure out whether this type of recycling is good.
In order to perform this energy healing technique, it is essential to have stringent control of the exhaust of polluting gases, since despite having mindful control, harmful aeriform items are given off right into the ambience.