Advancing sustainable lubricating oil management: Re-refining techniques, market insights, innovative enhancements, and conversion to fuel.

Lubricating oil disposal is considered hazardous waste and has adverse effects on the environment and human health. It is crucial to implement tight measures to regulate and minimize these impacts, or explore opportunities for oil regeneration. The paper offers an extensive review of worldwide demand for lubricating oil and its market share, with a specific emphasis on the viewpoint of Bangladesh.