title: Enhancement of biodegradation of crude petroleum-oil in contaminated water by the addition of nitrogen sources.
abstract: Addition of nitrogen sources as supplementary nutrient into MSM medium to enhance biodegradation by stimulating the growth four isolates, Acinetobacter faecalis, Staphylococcus sp., Pseudomonas putida and Neisseria elongata isolated from petroleum contaminated groundwater, wastewater aeration pond and biopond at the oil refinery Terengganu Malaysia was investigated. The organic nitrogen sources tested not only supported growth but also enhances biodegradation of 1% Tapis crude oil. All four isolates showed good growth especially when peptone was employed as the organic nitrogen compared to growth in the basal medium. Gas chromatography showed that more then 91, 93, 94 and 95% degradation of total hydrocarbon was observed after 5 days of incubation by isolates Pseudomonas putida, Neisseria elongate, Acinetobacter faecalis and Staphylococcus sp., respectively.
authors.affiliation: School of Biosciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
authors.forename: A M
authors.initials: AM
authors.lastname: Mukred
authors.forename: A A
authors.initials: AA
authors.lastname: Hamid
authors.forename: A
authors.initials: A
authors.lastname: Hamzah
authors.forename: W M Wan
authors.initials: WM
authors.lastname: Yusoff
mesh_terms: D000645:Ammonium Sulfate / Q000494:pharmacology; D050296:Microbial Viability / Q000187:drug effects; D009584:Nitrogen / Q000378:metabolism*; D010461:Peptones / Q000494:pharmacology; D010578:Petroleum / Q000378:metabolism*; D012441:Saccharomyces cerevisiae; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D010461:Peptones; D010578:Petroleum; D014874:Water Pollutants, Chemical; D009584:Nitrogen; D000645:Ammonium Sulfate