ENVR 166 |
| Degradation of atrazine via its reaction with Ni/Fe powder was conducted in aqueous solution. The experimental results showed that Ni/Fe had great catalytic activity on the treatment of atrazine-contaminated water and the dechlorination efficiency was dependent on both the amount of Ni loading on Fe's surface and pH values of the solution. The catalyst of 2.95% Ni/Fe had the largest surface area and was the optimum proportion for atrazine dechlorination. Catalytic activity of Ni/Fe was very obvious only when the pH value of the solution was less than 4.0. The reaction approximately followed first-order kinetics under the experimental conditions, and the apparent rate constants at pH=2.0, 3.0 and 4.0 were 0.07518, 0.06212 and 0.00131min-1, respectively. The electrochemical measurements showed the adsorbed hydrogen must be the dominating reducing agent for atrazine dechlorination in water. |
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General Papers
6:00 PM-8:00 PM, Wednesday, 13 September 2006 Moscone Center -- Hall D, Poster
Division of Environmental Chemistry |