Pollution Research Paper

Vol 39, Issue 4, 2020; Page No.(935-939)

PERFORMANCE EVALUATION OF (N-BUTANOL WITH TRI-SODIUM PHOSPHATE) FOR REGENERATION OF (10W-40) SPENT OIL LUBRICANT

MUDHAFFAR YACOUB HUSSEIN, ZUHAIR KUDHAIR ABBAS, QURAISH ABBAS KADHUM AND AHMED SAMIR NAJE

Abstract

Recycling of used lubricating oils by using solvent extraction method is considered inexpensive and achieving maximum productivity with minimum wasted and one of the most effective processes in recycling of used lubricating oils. In this work, the efficiency of extracting solvent (n- Butanol) without catalyzed solvent and with catalyzed solvent (tri-sodium phosphate : TSP), as the pretreatment method in concentration 30 ppm recycling used oil was investigated experimentally, solvent to oil ratio (2:1, 3:1, 4:1 and 5:1 V/V), speed of mixing (500 rpm), mixing time (30 min) and temperature (25 oC). The performance on three evaluated depended factors that the percent of oil loss (POL), the percent of sludge removal (PSR) and the percent of base oil recovered (yield) were used to estimate the efficiency of extraction process. The optimum solvent to oil ratio or critical clarifying ratio (CCR) were (3.4) without TSP and (3.55) with TSP. The maximum recovered base oil (89.5%) by using n-Butanol with TSP and (81.5%) without TSP, minimum oil loss nearly (1.2%) (1.6%) and maximum sludge removal (9%) and (17%) with TSP and without TSP respectively.

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