Document Detail


Combined effect of nonionic surfactant Tween 80 and DOM on the behaviors of PAHs in soil--water system.
MedLine Citation:
PMID:  16185745     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Batch experiments were performed to examine the desorption behavior of phenanthrene and pyrene in soil-water system in the presence of nonionic surfactant Tween 80 and dissolved organic matter (DOM) derived from pig manure or pig manure compost. Addition of 150 mgl(-1) Tween 80 desorbed 5.8% and 2.1% of phenanthrene and pyrene from soil into aqueous phase, respectively, while the addition of both Tween 80 and DOM derived from pig manure compost and pig manure could further enhance the desorption of phenanthrene to 15.8% and 16.2%, respectively, and 6.4% and 10.9%, respectively, for pyrene. In addition, our finding also suggested that subsequent addition of Tween 80 into the soil-water system could further enhance PAHs desorption. The enhancement effect of the co-existence of Tween 80 and DOM was more than the additive effect of the Tween 80 and DOM individually. It is likely that the formation of DOM-surfactant complex in the soil-water system may be a possible reason to explain such desorption enhancement phenomenon. Therefore, it is anticipated that the coexistence of both Tween 80 and DOM derived from pig manure or pig manure compost in soil environment will enhance the bioavailability of PAHs as well as other hydrophobic organic contaminants (HOCs) by enhancing the desorption during remediation process.
Authors:
K Y Cheng; J W C Wong
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-09-26
Journal Detail:
Title:  Chemosphere     Volume:  62     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2006-03-13     Completed Date:  2006-06-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  1907-16     Citation Subset:  IM    
Affiliation:
Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China.
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MeSH Terms
Descriptor/Qualifier:
Adsorption
Biodegradation, Environmental
Chromatography, High Pressure Liquid
Manure* / analysis
Polycyclic Hydrocarbons, Aromatic / analysis*
Polysorbates / chemistry*
Soil Microbiology
Soil Pollutants / analysis*
Solubility
Surface-Active Agents / chemistry*
Water / chemistry*
Chemical
Reg. No./Substance:
0/Manure; 0/Polycyclic Hydrocarbons, Aromatic; 0/Polysorbates; 0/Soil Pollutants; 0/Surface-Active Agents; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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