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Recovery of residual oil from the centrifuge sludge of a palm oil mill: Effect of enzyme digestion and surfactant treatment
Author(s) -
Ho C. C.,
Show M. C.,
Ong S. H.
Publication year - 1992
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/bf02635901
Subject(s) - pulmonary surfactant , centrifuge , pulp and paper industry , chemistry , residual oil , digestion (alchemy) , effluent , substrate (aquarium) , chromatography , palm oil , waste management , food science , biochemistry , biology , organic chemistry , ecology , physics , nuclear physics , engineering
Residual oil recovery from the centrifuge sludge of a palm oil mill was investigated by treating with enzyme (Celluclast) followed by washing the digested substrate with surfactant. The optimal conditions for enzyme digestion with respect to pH, temperature, reaction time, concentrations of enzyme and surfactant were evaluated. The possible role of the surfactant in the oil recovery process is discussed. The chemical composition and physical properties of the sludge before and after treatment were determined and its significance in the subsequent effluent treatment/utilization of the sludge is discussed.