Document Detail


Photo-Fenton degradation of non-ionic surfactant and its mixture with cationic or anionic surfactant.
MedLine Citation:
PMID:  22506701     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The oxidative degradation of non-ionic surfactants by the photo-Fenton process has been examined. The photo-Fenton degradation kinetics of mixtures of non-ionic surfactant and other type surfactants has been also investigated since mixtures of non-ionic and ionic surfactants are commonly used to utilize their synergistic effects in many practices. Effects of operating parameters such as dosages of Fenton reagents (iron and hydrogen peroxide) and UV light intensity on the degradation of commercial non-ionic surfactant Sannonic SS-90 (polyoxyethylene alkyl ether) were studied. Although the dosages of the Fenton reagents increased the degradation rate up to the optimum dosages, further addition of the reagents could not enhance the degradation rate. Excess dosages of Fe and H(2)O(2) caused excess OH radicals which could be a scavenger of OH radicals and as a result could not enhance the degradation of the surfactant. The increase in UV light intensity resulting in the faster photo-Fenton process or the enhancement of OH radical formation rate led to the increase in degradation rate of non-ionic surfactant. Although the existence of the anionic surfactant (sodium dodecylbenzene sulphonate) would inhibit the degradation of the non-ionic surfactant due to the formation of complex with Fe ion, the existence of cationic surfactant (dodecyltrimethyl ammonium chloride) affected insignificantly the photo-Fenton degradation process of the non-ionic surfactant.
Authors:
Erina Ono; Masahiro Tokumura; Yoshinori Kawase
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering     Volume:  47     ISSN:  1532-4117     ISO Abbreviation:  J Environ Sci Health A Tox Hazard Subst Environ Eng     Publication Date:  2012  
Date Detail:
Created Date:  2012-04-17     Completed Date:  2012-08-03     Revised Date:  2012-10-05    
Medline Journal Info:
Nlm Unique ID:  9812551     Medline TA:  J Environ Sci Health A Tox Hazard Subst Environ Eng     Country:  England    
Other Details:
Languages:  eng     Pagination:  1087-95     Citation Subset:  IM    
Affiliation:
Research Center for Biochemical and Environmental Engineering, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama, Japan.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Anions*
Cations*
Hydrogen Peroxide / chemistry*
Iron / chemistry*
Photochemical Processes
Surface-Active Agents / chemistry*
Ultraviolet Rays
Chemical
Reg. No./Substance:
0/Anions; 0/Cations; 0/Fenton's reagent; 0/Surface-Active Agents; 7439-89-6/Iron; 7722-84-1/Hydrogen Peroxide
Comments/Corrections
Erratum In:
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2012;47(13):2180

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


Previous Document:  Anaerobic toxicity assay of plasticisers.
Next Document:  Chemical evolution and vegetation response in an altered wetland ecosystem, Hula Valley, Israel (198...