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Iranian Journal of Environmental Health, Science and Engineering
Iranian Association of Environmental Health (IAEH)
ISSN: 1735-1979
Vol. 4, No. 2, 2007, pp. 127-132
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Bioline Code: se07019
Full paper language: English
Document type: Research Article
Document available free of charge
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Iranian Journal of Environmental Health, Science and Engineering, Vol. 4, No. 2, 2007, pp. 127-132
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PERFORMANCE EVALUATION OF ELECTROCOAGULATION PROCESS FOR DIAZINON REMOVAL FROM AQUEOUS ENVIRONMENTS BY USING IRON ELECTRODES
Bazrafshan, E.; Mahvi, A. H.; Nasseri, S. & Shaieghi, M.
Abstract
The present study investigates the removal of pesticide by electrocoagulation process. A glass tank in 1.56 L
volume with four iron plate electrodes was used to perform the experiments. The electrodes connected to a
DC power supply (bipolar mode). The tank was filled with synthetic wastewater were which contained
diazinon pesticide in concentration of 10, 50 and 100 mg/L. The percent of diazinon removal was measured
at pH= 3, 7 and 10 and in electric potential range of 20-40V by thin layer chromatography method. The
results indicated that initial concentration of diazinon can affect efficiency removal and for higher
concentrations of diazinon, higher electrical potential or more reaction time is needed. The results showed
that for a given time, the removal efficiency increased significantly with increase of voltage. The highest
electrical potential (40V) produced the quickest treatment with >99% diazinon reduction occurring after 60
min. The final pH for iron electrodes was always higher than initial pH. Finally it can be concluded that
electrocoagulation process (using iron electrodes) is a reliable, efficient and cost-effective method for
removal of diazinon from aqueous environments, especially designed for pH=3 and voltage=40V.
Keywords
Pesticide, diazinon, electrocoagulation, aqueous environments
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© Copyright 2007 - Tehran University of Medical Sciences Publications Alternative site location: http://diglib.tums.ac.ir/pub/
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