Rapid treatment of atrazine-contaminated water by nickel/iron bimetallic system.
The utility of nickel/iron in the remediation of atrazine-contaminated water was investigated. The experimental results showed that nickel/iron had effective catalytic activity in dechlorinating atrazine under acidic conditions. The dechlorination reaction approximately followed the first-order kinetics under the experimental conditions (nickel/iron: 1.0 g/250 ml; C(atrazine) = 20.0 mg/L), the reaction rate increased with decreasing pH value of the reaction solution and increasing the proportion of Ni : Fe within 2.95%. For condition with 2.95% nickel/iron, the reaction rate constants were 0.07518 (R = 0.9927), 0.06212 (R = 0.9846) and 0.00131 min(-1) (R = 0.9565) at pH = 2.0, 3.0 and 4.0, respectively. HPLC analysis was used to monitor the decline of atrazine concentration.
Wei
Hong
H
Institute of Environmental Science, Zhejiang University, Hangzhou 310029, China. weihong0521@sohu.com
Tong
Shao-Ping
SP
Wang
Hong-Yu
HY
Liu
Wei-Ping
WP
D001280:Atrazine / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D006540:Herbicides / Q000737:chemistry*; D007501:Iron / Q000737:chemistry; D009532:Nickel / Q000737:chemistry; D014873:Water Pollutants / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
D006540:Herbicides; D014873:Water Pollutants; D009532:Nickel; D007501:Iron; D001280:Atrazine