| Microbiological aspects of surfactant use for biological soil remediation. | |
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MedLine Citation:
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PMID: 15765586 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Biodegradation of hydrophobic organic compounds in polluted soil is a process involving interactions among soil particles, pollutants, water, and micro-organisms. Surface-active agents or surfactants are compounds that may affect these interactions, and the use of these compounds may be a means of overcoming the problem of limited bioavailability of hydrophobic organic pollutants in biological soil remediation. The effects of surfactants on the physiology of micro-organisms range from inhibition of growth due to surfactant toxicity to stimulation of growth caused by the use of surfactants as a co-substrate. The most important effect of surfactants on the interactions among soil and pollutant is stimulation of mass transport of the pollutant from the soil to the aqueous phase. This can be caused by three different mechanisms: emulsification of liquid pollutant, micellar solubilisation, and facilitated transport. The importance of these mechanisms with respect to the effect of surfactants on bioavailability is reviewed for hydrophobic organic pollutants present in different physical states. The complexity of the effect of surfactants on pollutant bioavailability is reflected by the results in the literature, which range from stimulation to inhibition of desorption and biodegradation of polluting compounds. No general trends can be found in these results. Therefore, more research is necessary to make the application of surfactants a standard tool in biological soil remediation. |
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Authors:
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F Volkering; A M Breure; W H Rulkens |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Biodegradation Volume: 8 ISSN: 0923-9820 ISO Abbreviation: Biodegradation Publication Date: 1997-1998 |
Date Detail:
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Created Date: 2005-03-15 Completed Date: 2005-04-11 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9100834 Medline TA: Biodegradation Country: Netherlands |
Other Details:
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Languages: eng Pagination: 401-17 Citation Subset: IM |
Affiliation:
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MTI Environmental Technology, PO Box 444, 6500 AK Nijmegen, The Netherlands. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Biodegradation, Environmental* Chemistry, Physical Physicochemical Phenomena Soil Microbiology* Soil Pollutants / analysis*, metabolism Surface-Active Agents / chemistry, pharmacology* |
| Chemical | |
Reg. No./Substance:
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0/Soil Pollutants; 0/Surface-Active Agents |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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