Abstract   The recycling of waste oil into diesel has become an important research area in recent years due to environmental concerns and the need for sustainable energy sources. Catalysts play a crucial role in this process. This article reviews the types of catalysts used in waste oil - to - diesel conversion, their reaction mechanisms, and the factors influencing their performance. 1....

Volatile Organic Compounds (VOCs) are a significant environmental and health concern in the lubricant manufacturing industry, particularly during the blending of lube oils. These emissions arise from the evaporation of light hydrocarbon components and additives during mixing, storage, and handling. Regulatory bodies worldwide are imposing stricter limits on VOC emissions, pushing manufacturers...