The dechlorination of atrazine (2-chloro-4-ethylaulino-6-isopropylamino-1,3,5-triazine) via reaction with metallic iron under low-oxygen conditions was studied using reaction mixture pH values of 2.0. 3.0, and 3.8. The pH control was achieved through addition of sulfuric acid throughout the duration of the reaction. The lower the pH of the reaction mixture, the faster the degradation of atrazine. The surface area of the sulfuric acid-treated iron particles was 0.31 (+/- 0.01) m(2) g(-1) and the surface area normalized initial pseudo-first order rate constants (k(SA), where rate = k(SA)x(surface area/l)x[Atrazine]) at pH values of 2.0, 3.0, and 3.8 were equal to, respectively, 3.0 (+/- 0.4)x 10(-3) min(-1) m(-2) 1, 5 (+/- 3)x 10(-4) min(-1) m(-2) 1, and 1 (+/- 1)x 10(-4) min(-1) m(-2) 1. The observed products of the degradation reaction were dechlorinated atrazine (2-ethylamino-4-isopropylamino-1,3,5-triazine) and possibly hydroxyatrazine (2-ethylamino-4-isopropylamino-6-hydroxy-s-triazine). Triazine ring protonation may account, at least in part, for the observed effect of pH on atrazine dechlorination via metallic iron. (C) 2000 Elsevier Science Ltd. All rights reserved.
Rapid reductive dechlorination of atrazine by zero-valent iron under acidic conditions
Dombek, T., Dolan, E., Schultz, J., & Klarup, D. (2001). Rapid reductive dechlorination of atrazine by zero-valent iron under acidic conditions. Environmental Pollution, 111(1), 21-27.
Abstract
Publications Info
To contact an RTI author, request a report, or for additional information about publications by our experts, send us your request.
Meet the Experts
View All ExpertsRecent Publications
Article
The daily association between affect and alcohol use: A meta-analysis of individual participant data
Article
Protection of forest ecosystems in the eastern United States from elevated atmospheric deposition of sulfur and nitrogen
Article
The use of patient experience feedback in rehabilitation quality improvement and codesign activities
Article