US EPA

7451564 

Journal Article 

Kinetics of the oxidation of MCRR by potassium permanganate 

Chen, X; Xiao, B; Liu, J; Fang, T; Xu, X 

2005 

1 

Toxicon
ISSN: 0041-0101
EISSN: 1879-3150 

45 

7 

911-917 

English 

15904686 

10.1016/j.toxicon.2005.02.011 

WOS:000229846500011 

The occurrence of the microcystins in the water bodies, especially in drinking water resources, has received considerable attentions. In situ chemical oxidation is a promising cost-effective treatment method to remove MC from water body. This research investigated the reaction kinetics of the oxidation of MCRR by permanganate. Experimental results indicate that the reaction is second order overall and first order with respect to both permanganate and MCRR, and has an activation energy of 18.9 kJ/mol. The second-order rate constant ranges from 0.154 to 0.225 l/mg/min at temperature from 15 to 30 degrees C. The MCRR degradation rates can be accelerated through increasing reaction temperature and oxidant concentration. The reaction under acid conditions was slightly faster than under alkaline conditions. The half-life of the reaction was less than 1min, and more than 99.5% of MCRR was degraded within 10min. 

Kinetics; Microcystin-RR; Oxidation; Potassium permanganate; acid; alkali; cyanoginosin RR; oxidizing agent; permanganate potassium; alkalinity; article; chemical reaction kinetics; concentration (parameters); degradation; energy; experiment; half life time; oxidation; priority journal; reaction analysis; temperature; Cyanobacteria; Hydrogen-Ion Concentration; Kinetics; Microcystins; Oxidation-Reduction; Peptides, Cyclic; Potassium Permanganate; Temperature; Water Purification