Journal
BIORESOURCE TECHNOLOGY
Volume 116, Issue -, Pages 24-28Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.04.024
Keywords
Biosurfactants; Pseudomonas aeruginosa; Oil recovery; Oily sludge
Funding
- National Key and Special Project Foundation of China [2011ZX05009-004]
- National Natural Science Foundation of China [41102231, 41172333]
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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 degrees 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. (C) 2012 Elsevier Ltd. All rights reserved.
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