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A study of the purification of used engine oils with a montmorillonitic clay
Author(s) -
Mohellebi F.,
Bouchekhou A.,
Harbi N.,
Hadjoudj F. T.,
Chitour C. E.
Publication year - 2000
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.3010130106
Subject(s) - bentonite , filtration (mathematics) , gasoline , pulp and paper industry , percolation (cognitive psychology) , petroleum engineering , chemistry , waste management , environmental science , chemical engineering , geology , organic chemistry , engineering , mathematics , statistics , neuroscience , biology
The present paper looks at percolation, a recycling technique for engine oils that is non‐polluting and dispenses with the use of acid. The technique employs Algerian bentonite as a complementary purifier of used SAE 20W–50 engine oils which have first been dehydrated and had the light hydrocarbons (gasoline) removed. In order to understand the nature of the used oil, the characteristics of an oil in service were closely monitored over 7000 km. Various tests were performed on the bentonite to find the most satisfactory form of clay filtration bed. The species retained by the beds were analysed.