Abstract
The present study focuses on the regeneration of spent engine oil using the cheapest and most effective solvent extraction flocculation processes. Re-refining of waste lubricating oil was thoroughly examined utilizing recoverable solvents, including different classes of solvents like 2-propanol (alcohol) and ketone like methyl ethyl ketone. A comparative study was carried out to investigate the various effects of numerous variables, including refining time, refining temperature, solvent-to-waste oil ratio on percentage yield of recovered lube oil. The percentage yield was studied at a varying solvent-to-waste oil ratio. The present investigation shows that extraction with methyl ethyl ketone gave the highest yield of 97% of recovered oil, followed by 2-propanol (94%) as an extraction solvent. It was also showed that optimum parameters for revivification were (i) refining time 60 min, (ii) refining temperature—48℃, (iii) solvent-to-waste oil ratio—3:1. Physicochemical properties of recovered oil have been estimated out, and results show that, with methyl ethyl ketone, there is close proximity of result with fresh lubricating oil.
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Sarkar, S., Datta, D., Deepak, K.S., Das, B. (2022). Revivification of Spent Lubricating Oil by Ecofriendly Extraction Flocculation Method. In: Verma, P., Samuel, O.D., Verma, T.N., Dwivedi, G. (eds) Advancement in Materials, Manufacturing and Energy Engineering, Vol. I. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-16-5371-1_47
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