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Radiation Degradation Mechanism of some Pesticides in Sewage Wastewater |
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PP: 123- 126 |
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doi:10.18576/jrna/080203
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Author(s) |
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I. Ghanam,
S. Takriti,
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Abstract |
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| The characterization of DDT and DDE pesticides existing in wastewater was investigated. The determination of these pesticides was carried out by GC, HPLC and conductivity techniques. The results showed that the concentration of these pesticides is among the international range as a function of months.
The gamma radiation degradation of 2,2-bis(4-chlorophenyl)-1,1,1-trichloroethane (DDT), and 2,2-bis(4-chlorophenyl)-1,1-dichloroethylene (DDE) dissolved in n-hexane was studied. DDT and DDE produced DDD and 2,2-bis(4-chlorophenyl) chloroethylene (DDMU) respectively. The degradation of these two former compounds was larger in iso-octane than in n-hexane or acetone. DDD, DDE and many DDMU would degrades to carboxyl group at 25 KGy.
The kinetic of the radiation degradation reaction of these pesticides, as a function of absorbed dose, illustrated that the first order reaction could be applied to explain the mechanism of the degradation reaction. The reaction starts slowly then accelerates it rates to reach a saturation value.
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