Kamthita, P. and Leelasinlatham, B. 2025. Optimization of Base Oil Recovery from Used Lubricating Oil through Extraction-Adsorption using Response Surface Methodology. Journal of Current Science and Technology. 15, 4 (Sep. 2025), 147. DOI:https://doi.org/10.59796/jcst.V15N4.2025.147.