Evaluation of wear metals levels in engine oil recycled by composite solvents and cashew bark activated carbon extraction technology

The experimental method adopted for the determination of wear metals in the 6 months used engine oil, and the recycled engine oil, was activated carbon extraction technology using activated carbon from Anacardium occidental bark. The research began with samples collection and preparation. The engine oil was then recycled and analysis on the wear metals of the recycled engine oil such as Iron (Fe), Copper (Cu), and Lead (Pb), were determined using atomic adsorption spectrometry (AAS) and compared with a fresh engine oil using ASTM specifications.