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Regeneration of spent earth in aqueous medium
Author(s) -
Kalam Abul,
Joshi J. B.
Publication year - 1988
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02546007
Subject(s) - slurry , earth (classical element) , regeneration (biology) , rare earth , aqueous solution , aqueous medium , phase (matter) , materials science , environmental science , chemistry , metallurgy , environmental engineering , biology , physics , organic chemistry , mathematical physics , microbiology and biotechnology
A simple method of regeneration of spent earth at a relatively low temperature has been developed. Deoiled spent earth was regenerated in the form of a slurry using water as an aqueous phase, in the temperature range of 170–270°C. The effects of temperature, slurry concentration and cycle of regeneration have been studied. An attempt has been made to discern the controlling mechanism. Regenerated earth from the present method does not impart any malodor to the oil as against theramlly regenerated earth.