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Degradation of dichloroacetonitrile by a UV/peroxymonosulfate process: modeling and optimization based on response
Xing Zhang1, Jilun Yao2, Wei Peng1
1Department of Military Facilities, Army Logistics University of PLA Chongqing 401331 China.
Abstract:
Response surface methodology (RSM) was utilized to model and optimize the dichloroacetonitrile (DCAN) degradation process by UV/PMS. A quadratic function between DCAN degradation efficiency and three factors including dosage of PMS, UV power and retention time was obtained. The model fitted very well according to high the value of R 2 (0.9919) and Adj-R 2 (0.9814). Additionally, the analysis of variance showed the influence of factors on degradation efficiency followed: retention time > UV power > dosage of PMS. Finally, the optimum conditions were suggested under this model. The degradation efficiency reached the maximum value of 96.2% with the optimum conditions: dosage of PMS = 0.2 mM, UV power = 7.95 W, retention time = 80 min.
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