title: Oil recovery from refinery oily sludge using a rhamnolipid biosurfactant-producing Pseudomonas.
abstract: In this study, a rhamnolipid biosurfactant-producing strain, Pseudomonas aeruginosa F-2, was used to recover oil from refinery oily sludge in laboratory and pilot-scale experiments. The optimum values of carbon to nitrogen ratio, temperature, sludge-water ratio and inoculum size for oil recovery were determined as 10, 35 °C, 1:4 and 4%, respectively. An oil recovery of up to 91.5% was obtained with the equipping of draft tubes during the field pilot-scale studies. The results showed that strain F-2 has the potential for industrial applications and may be used in oil recovery from oily sludge.
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Yan
authors.forename: Mang
authors.initials: M
authors.lastname: Lu
authors.forename: Qin
authors.initials: Q
authors.lastname: Yang
authors.forename: Hai-Ling
authors.initials: HL
authors.lastname: Zhang
authors.forename: Zhong-Zhi
authors.initials: ZZ
authors.lastname: Zhang
authors.forename: Rong
authors.initials: R
authors.lastname: Chen
mesh_terms: D001673:Biodegradation, Environmental; D057919:Biological Oxygen Demand Analysis; D005591:Chemical Fractionation; D006017:Glycolipids / Q000378:metabolism*; D006838:Hydrocarbons / Q000032:analysis; D061329:Oil and Gas Fields / Q000382:microbiology*; D009821:Oils / Q000302:isolation & purification*; D010865:Pilot Projects; D011550:Pseudomonas aeruginosa / Q000378:metabolism*; D059027:Recycling / Q000379:methods*; D012722:Sewage / Q000382:microbiology*; D013501:Surface-Active Agents / Q000378:metabolism*; D014865:Waste Disposal, Fluid
chemical_list: D006017:Glycolipids; D006838:Hydrocarbons; D009821:Oils; D012722:Sewage; D013501:Surface-Active Agents; C418382:rhamnolipid