Enhanced Solubility and Biodegradation of Naphthalene with Biosurfactant
- 1 July 2000
- journal article
- research article
- Published by American Society of Civil Engineers (ASCE) in Journal of Environmental Engineering
- Vol. 126 (7), 629-634
- https://doi.org/10.1061/(asce)0733-9372(2000)126:7(629)
Abstract
Biosurfactant was produced by fermenting kerosene and used vegetable oil using a Pseudomonas sp. under nonsterile conditions. The biosurfactant at a concentration of 0.5 g/L and pH of 10.5 lowered the surface tension of water to 25 mN/m. The biosurfactant was used to enhance the solubility of naphthalene, and the results are compared to an anionic (sodium dedecyl sulfate) and a nonionic (Triton X-100) surfactant. The biosurfactant (5 g/L at pH of 7) enhanced the solubility of naphthalene to more than 30 times its aqueous solubility. Solubilized naphthalene in Triton X-100 and biosurfactant solutions was biodegraded by the same microorganism that produced the biosurfactant. Naphthalene solubilized in biosurfactant and Triton X-100 (400–600 mg/L) was biodegraded in 40 days and 100 h, respectively. Naphthalene in the amount of 30 mg/L was degraded by the Pseudomonas sp. in 2 days. The biosurfactant was also biodegraded during the biodegradation of naphthalene, but this was not the case with Triton X-100. The biodegradation of the biosurfactant appeared to compete with the biodegradation of naphthalene. Sodium dedecyl sulfate inhibited the biodegradation of naphthalene at the conditions studied.Keywords
This publication has 23 references indexed in Scilit:
- Solubilization of Naphthalene and Methyl-Substituted Naphthalenes from Crude Oil Using BiosurfactantsEnvironmental Science & Technology, 1997
- Biodegradation of Naphthalene from Coal Tar and Heptamethylnonane in Mixed Batch SystemsEnvironmental Science & Technology, 1996
- Effect of nonionic surfactant addition on bacterial metabolism of naphthalene: Assessment of toxicity and overflow metabolism potentialJournal of Hazardous Materials, 1995
- Emerging Technologies in Surfactant-Enhanced Subsurface RemediationPublished by American Chemical Society (ACS) ,1995
- Surfactant-Enhanced Remediation of Subsurface ContaminationPublished by American Chemical Society (ACS) ,1995
- Effect of Different Surfactant Concentrations on Naphthalene BiodegradationPublished by American Chemical Society (ACS) ,1995
- Solubilization of Benzene, Naphthalene, Anthracene, and Pyrene in 1-Dodecanesulfonic Acid MicelleThe Journal of Physical Chemistry, 1995
- A practical approach to biosurfactant production using nonaseptic fermentation of mixed culturesBiotechnology & Bioengineering, 1994
- Solubilization of non-polar compounds by non-ionic surfactant micellesWater Research, 1994
- Soil Clean up byin-situSurfactant Flushing. V. Micellar Solubilization of Some Aromatic ContaminantsSeparation Science and Technology, 1993