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The Cleansing of Waste Oil in an Oilfield by Pure-culture Microorganisms

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Eight strains were isolated and identified as Acinetobacter johnsonii, Bacillus cereus, Staphylococcus kloosii, Burkholderia cepacia, Serratia ficaria, Bacillus mucilaginosus, Gordonia polyisoprenivorans, and Nocardia amarae. They were employed to remove inorganic admixtures by wettability reversal in oil phase and bioflocculation in water phase. The admixtures were separated and determined as SiO2, (Na,Ca)Al(Si,Al)3O8, Al2Si2O5(OH)4, KAl2(Si3Al)O10(OH)2, CaCO3, BaSO4, and FeS. They could be effectively removed with inorganic admixture, turbidity, and sulfide below 0.5%, 100 NTU, and 2 mg/L, respectively, rendering clear oil-water interface in favor of smooth reclamations of waste oil and wash-down water.
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Keywords: cleansing; inorganic admixtures; sulfide; wash-down water; waste oil

Document Type: Research Article

Affiliations: 1: Engineering Research Centre for Waste Oil Recovery Technology and Equipment, Ministry Education, Chongqing Technology and Business University, Chongqing, China 2: College of Foreign Languages, Chongqing Technology and Business University, Chongqing, China 3: Department of Military Oil Application & Management Engineering, Logistical Engineering Institute, PLA, Chongqing, China

Publication date: December 2, 2015

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