Destruction of microcystin-RR by Fenton oxidation.
In order to evaluate the microcystin removal efficiency of Fenton oxidation, experiments were performed to investigate the destruction of microcystin-RR (MC-RR) in water. The results indicated that the optimal process parameters were determined as follows: 1.5 mmol/L H(2)O(2), 0.10 mmol/L Fe(2+), reaction temperature 25+/-1 degrees C, pH 3-4 and 30 min reaction time. Under the optimal conditions, the molar ratio of MC-RR:H(2)O(2):Fe(2+) was 1:1071:71 and the destruction efficiency of MC-RR was higher than 99%. The initial phase of destruction process followed the pseudo-first order kinetics, and the destruction mechanism was primarily facilitated by the hydroxyl radical oxidation.
Zhong
Yuan
Y
College of Environmental Science and Engineering, Nankai University, Tianjin, China.
Jin
Xiangcan
X
Qiao
Ruiping
R
Qi
Xinhua
X
Zhuang
Yuanyi
Y
D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D017665:Hydroxyl Radical; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D008387:Marine Toxins; D052998:Microcystins / Q000737:chemistry*; D010084:Oxidation-Reduction; D014874:Water Pollutants, Chemical / Q000737:chemistry*
C045076:Fenton's reagent; D008387:Marine Toxins; D052998:Microcystins; D014874:Water Pollutants, Chemical; D017665:Hydroxyl Radical; D006861:Hydrogen Peroxide; C063855:microcystin RR; D007501:Iron