Document Detail


Optimization of the solution parameters during the degradation of Orange II in a photo-reactor mediated by Fe-Nafion membranes.
MedLine Citation:
PMID:  19700821     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The Fenton and photo-Fenton mediated degradation process of Orange II was investigated in a flow photo-reactor. The degradation was monitored as a function of the wavelength of the applied light, recirculation flow rate, amount of H(2)O(2) and the initial concentration of Orange II. Optimization of the photo-Fenton degradation mediated by Fe-Nafion membranes indicated that an Orange II (0.25 M) solution discolored above 95% within 2.5 hours at an H(2)O(2)/Orange II ratio of 20. A concomitant mineralization of 40% of Orange II was observed after 5 h reaction. Homogeneous photo-Fenton processes were able to fully discolore Orange II within 1 hour and concomitantly fully mineralize the dye in the presence of Fe(III) (2 ppm) and an H(2)O(2)/Orange II ratio of 20. Surfactants such as linear alkylbenzene sulphonates (LAS) and K-perfluoroalkyl sulphonate (FT 800) slowed down the Orange II abatement in photo-Fenton processes.
Authors:
M A Manzano; A Riaza; J M Quiroga; J Kiwi
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Water science and technology : a journal of the International Association on Water Pollution Research     Volume:  60     ISSN:  0273-1223     ISO Abbreviation:  Water Sci. Technol.     Publication Date:  2009  
Date Detail:
Created Date:  2009-08-24     Completed Date:  2009-10-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9879497     Medline TA:  Water Sci Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  833-40     Citation Subset:  IM    
Affiliation:
Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, Cadiz University, Poligono Rio San Pedro s/n, Puerto Real, 11510, Cadiz, Spain. manuel.manzano@uca.es
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MeSH Terms
Descriptor/Qualifier:
Azo Compounds / chemistry*
Benzenesulfonates / chemistry*
Catalysis
Color
Fluorocarbon Polymers / chemistry*
Hydrogen Peroxide / chemistry
Iron / chemistry*
Kinetics
Light*
Membranes, Artificial*
Minerals / chemistry
Solutions
Surface-Active Agents / chemistry
Time Factors
Chemical
Reg. No./Substance:
0/Azo Compounds; 0/Benzenesulfonates; 0/Fenton's reagent; 0/Fluorocarbon Polymers; 0/Membranes, Artificial; 0/Minerals; 0/Solutions; 0/Surface-Active Agents; 39464-59-0/perfluorosulfonic acid; 633-96-5/2-naphthol orange; 7439-89-6/Iron; 7722-84-1/Hydrogen Peroxide

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


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