Energy Recovery Potential of Waste Engine Oil From an Alternative Perspective
Özet
This chapter explores the energy recovery potential and environmental impact of waste engine oil from an alternative perspective. As global industrial demands grow, managing energy efficiency and handling hazardous materials like waste engine oil is vital to mitigate ecological harm to soil and water resources. Modern engine lubricants, produced from crude oil fractional distillation and mixed with specific performance additives, inevitably lose their primary lubricating functionality during engine operation due to exposure to severe heat, oxidation, and contamination. Over a single vehicle's 25-year lifecycle, approximately 100 liters of waste engine oil are generated. Worldwide lubricant demand exceeds 30 million tons per year, yet only about 40% of waste engine oil is collected, and a mere 3.2% is recycled or recovered, leaving the uncollected majority to cause significant unrecorded environmental pollution. Although processes such as pyrolytic distillation can refine waste oil back into base oil or fuel-like products, waste oils are strictly categorized into three regulatory classes to determine whether they can be recycled, used as licensed fuel, or safely incinerated. Despite high viscosity limiting its direct application in diesel engines, research into viscosity-reducing additives offers a valuable pathway for sustainable energy recovery and economic utilization.
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