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Biosurfactant production by Pseudomonas aeruginosa SP4 using sequencing batch reactors: Effect of oil-to-glucose ratio

Paper ID Volume ID Publish Year Pages File Format Full-Text
3944 200 2010 7 PDF Available
Title
Biosurfactant production by Pseudomonas aeruginosa SP4 using sequencing batch reactors: Effect of oil-to-glucose ratio
Abstract

Sequencing batch reactors were used for biosurfactant production from Pseudomonas aeruginosa SP4. The lab-scale aerobic sequencing batch reactor units were operated at an oil loading rate of 2 kg/m3 day, a cycle time of 2 days/cycle, and a temperature of 37 °C. A mineral medium with palm oil was used as the culture medium. Glucose, a supplemental carbon source, was added for enhancing the microbial growth, which, in turn, gave a better process stability. The optimum oil-to-glucose ratio for the biosurfactant production was 40:1, providing a surface tension reduction of 58.5%, a chemical oxygen demand removal of 85.1%, and an oil removal of 77.7%. The maximum biosurfactant concentration in the bioreactors was about 1.1 times the critical micelle concentration. The biosurfactant product was predominantly composed of Rha-Rha-C8-C10 and Rha-Rha-C10-C8, and its critical micelle concentration was 150 mg/l.

Keywords
Biosurfactants; Pseudomonas aeruginosa; Sequencing batch reactor (SBR); Glycolipids; Rhamnolipids
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Biosurfactant production by Pseudomonas aeruginosa SP4 using sequencing batch reactors: Effect of oil-to-glucose ratio
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 49, Issue 2, 15 April 2010, Pages 185–191
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us