FunHow is car oil recycled?

How is car oil recycled?

Due to its enormous polluting potential, automobile oil cannot be discharged into the environment. A proposal to recycle it is regeneration , which is aimed at recovering the lubricating fraction present in the original oil and reusing it in the synthesis of lubricating oils . Currently, there are several regeneration technologies, but in all phases of the process they can be reduced to three: pre-treatment, treatment and finishing.

In pretreatment, a large part of the contaminants is removed by filtration, decantation or other similar technique. The treatment, which is a more refined process, isolates heavy metals, additives, and asphalt sludge. This is where the main differences between the different separation technologies lie: extraction with propane, vacuum distillation, extraction with solvent, addition of sulfuric acid followed by filtration, decantation and neutralization, ultrafiltration with membranes … The oil thus obtained is found free of contaminants, although a finishing phase is necessary to correct some details such as color and acidity.

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