Document Detail

Pre-treatment of high oil and grease pet food industrial wastewaters using immobilized lipase hydrolyzation.
MedLine Citation:
PMID:  16504384     Owner:  NLM     Status:  MEDLINE    
Wastewaters generating from pet food industries contain high concentration of oil and grease (O&G), which is difficult to treat through conventional biological treatment systems. In this study, the hydrolysis of O&G originating from pet food industrial wastewater was evaluated. Candida rugosa lipase was immobilized in calcium alginate beads and applied in the hydrolysis experiment. Results showed that approximately 50% of the O&G was hydrolyzed due to the enzyme activity. A significant increment in COD and VFA production was also observed. The immobilized lipase activity was confirmed with p-nitrophenyl palmitate (pNPP) before and after O&G hydrolysis. During the 3-day experiment, approximately 65% of the beads were recovered and after the hydrolysis, approximately 70% of the enzyme activity remained in the beads. This study shows the potential of immobilized lipase as a pre-treatment step in biological treatment of pet food manufacturing wastewater.
Jeganaesan Jeganathan; Amarjeet Bassi; George Nakhla
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-02-28
Journal Detail:
Title:  Journal of hazardous materials     Volume:  137     ISSN:  0304-3894     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2006 Sep 
Date Detail:
Created Date:  2006-08-28     Completed Date:  2007-01-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  121-8     Citation Subset:  IM    
Department of Chemical and Biochemical Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada.
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MeSH Terms
Animal Feed*
Enzymes, Immobilized
Food Industry
Hazardous Substances
Hydrogen-Ion Concentration
Industrial Waste
Lipase / chemistry*
Oxygen / chemistry
Palmitates / chemistry
Proteins / chemistry
Waste Disposal, Fluid / methods
Reg. No./Substance:
0/Enzymes, Immobilized; 0/Hazardous Substances; 0/Industrial Waste; 0/Oils; 0/Palmitates; 0/Proteins; 1492-30-4/4-nitrophenyl palmitate; 7782-44-7/Oxygen; EC

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