Biosurfactant-enhanced bioremediation of hydrophobic pollutants.

Cameotra, Swaranjit Singh and Makkar, R S (2010) Biosurfactant-enhanced bioremediation of hydrophobic pollutants. Pure and Applied Chemistry, 82 (1). pp. 97-116. ISSN 0033-4545

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Abstract

Biosurfactants are surface-active compounds synthesized by a wide variety of micro-organisms. They are molecules that have both hydrophobic and -philic domains and are capable of lowering the surface tension and the interfacial tension of the growth medium. Biosurfactants possess different chemical structures—lipopeptides, glycolipids, neutral lipids, and fatty acids. They are nontoxic biomolecules that are biodegradable. Biosurfactants also exhibit strong emulsification of hydrophobic compounds and form stable emulsions. Polycyclic aromatic hydrocarbons (PAHs), crude oil sludge, and pesticides can be toxic, mutagenic, and carcinogenic compounds that pollute the environment. They are released into the environment as a result of oil spillage and by-products of coal treatment processes. The low water solubility of these compounds limits their availability to microorganisms, which is a potential problem for bioremediation of contaminated sites. Microbially produced surfactants enhance the bioavailability of these hydrophobic compounds for bioremediation. Therefore, biosurfactant-enhanced solubility of pollutants has potential bioremediation applications

Item Type:	Article
Additional Information:	Copyright of this article belongs to International Union of Pure and Applied Chemistry.
Uncontrolled Keywords:	analytical chemistry; particle synthesis; recommendations; sampling; soil.
Subjects:	Q Science > QD Chemistry
Depositing User:	Dr. K.P.S.Sengar
Date Deposited:	28 Feb 2012 16:07
Last Modified:	08 Jan 2015 10:33
URI:	http://crdd.osdd.net/open/id/eprint/1121

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