Document Detail


Photocatalytic oxidation of pesticide rinsate.
MedLine Citation:
PMID:  11990360     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Pesticide rinsate has been considered as one of the major threats for the environment. In this study, photocatalysts such as TiO2 and O3 were used to promote the efficiency of direct UV photolysis to prevent such wastewater pollution. Carbofuran (a carbamate pesticide) and mevinphos (an organophosphate pesticide) with a concentration of 100 mg/L were selected as the test pesticide rinsates. Parent pesticide compound, COD, and microtoxicity analysis were employed to investigate the effect of photocatalyst on the degradation efficiency of pesticide in rinsate. It was found that the photocatalytic oxidation process (UV/O3, UV/TiO2) showed much higher COD removal and microtoxicity reduction efficiency for pesticide rinsate than did direct UV photolysis under the imposed conditions, suggesting that photocatalytic oxidation processes such as UV/O3 and UV/TiO2 could be a better alternative to treat pesticide rinsate. In addition, it was noted that increasing the initial pH of mevinphos rinsate to a basic level was required to reach higher COD removal efficiency and positive microtoxicity reduction efficiency while it was not necessary for the treatment of carbofuran rinsate.
Authors:
Wen S Kuo
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes     Volume:  37     ISSN:  0360-1234     ISO Abbreviation:  J Environ Sci Health B     Publication Date:  2002 Jan 
Date Detail:
Created Date:  2002-05-06     Completed Date:  2002-12-12     Revised Date:  2009-07-21    
Medline Journal Info:
Nlm Unique ID:  7607167     Medline TA:  J Environ Sci Health B     Country:  United States    
Other Details:
Languages:  eng     Pagination:  65-74     Citation Subset:  IM    
Affiliation:
Department of Safety, Health, and Environmental Engineering, National Lien-Ho Institute of Technology, Miao-Li, Taiwan, ROC. wsk@mail.nlhu.edu.tw
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MeSH Terms
Descriptor/Qualifier:
Carbofuran / chemistry
Hydrogen-Ion Concentration
Insecticides / chemistry
Mevinphos / chemistry
Oxidation-Reduction
Ozone / pharmacology*
Pesticide Residues / chemistry*
Photolysis / drug effects*,  radiation effects
Titanium / pharmacology*
Ultraviolet Rays
Water Pollution, Chemical / prevention & control*
Chemical
Reg. No./Substance:
0/Insecticides; 0/Pesticide Residues; 10028-15-6/Ozone; 13463-67-7/titanium dioxide; 1563-66-2/Carbofuran; 7440-32-6/Titanium; 7786-34-7/Mevinphos

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


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