Abstract
The degradation of dieldrin in water with iron-based material was investigated. The results were as follows: Degradation kinetics of dieldrin was the fastest when the mixture ratio of iron and iron oxide was 1:1. Degradation of dieldrin was proceed by dechlorination reaction with decrease of oxidation-reduction potential in water. The degradation of dieldrin was dependent on temperature in the range of dieldrin concentration, 0.0011-1.1mg/L. Dieldrin was degraded at pH 3∼9, but not at strong acid nor alkaline condition due to change of existence form of iron. The degradation of dieldrin was also regulated by anions such as NO3- and PO43- , which was considered to be due to the formation of iron compounds and consumption of reduction ability by iron-based material.
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