Kinetics of Reductive Dechlorination of DDT in Soil with Zero-Valent Iron

Yin Hai Lang; Min Jie Wang; Nan Nan Wang

doi:10.4028/www.scientific.net/AMR.295-297.1236

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 295-297Kinetics of Reductive Dechlorination of DDT in...

Kinetics of Reductive Dechlorination of DDT in Soil with Zero-Valent Iron

Abstract:

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.

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Manufacturing Science and Technology, AEMT2011

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Periodical:

Advanced Materials Research (Volumes 295-297)

Pages:

1236-1239

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.295-297.1236

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Online since:

July 2011

Authors:

Yin Hai Lang, Min Jie Wang, Nan Nan Wang

Keywords:

Dichloro-Diphenyl-Trichloroethane, Red Soil, Reductive Dechlorination, Zero-Valent Iron

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