Kinetics of Reductive Dechlorination of DDT in Soil with Zero-Valent Iron
In this study, reductive dechlorination of DDT compounds by zero-valent iron in Jiangxi red soil was investigated. DDT compounds were effectively dechlorinated by zero-valent iron. The pseudo-first-order kinetic model for 2,4¢-DDT and 4,4¢-DDT reduction with zero-valent iron was proposed. The reaction rate constants for 2,4¢-DDT and 4,4¢-DDT were 1.19´10-2 (min-1) and 1.44´10-2 (min-1), respectively. The dechlorination of 2,4¢-DDT and 4,4¢-DDT were mainly affected by the specific surface area of iron. The data from the variable-pH experiments (between 3.6 and 8.8) suggested that pH does not play a role in the rate-determination step.
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
Y. H. Lang et al., "Kinetics of Reductive Dechlorination of DDT in Soil with Zero-Valent Iron", Advanced Materials Research, Vols. 295-297, pp. 1236-1239, 2011