Degradation of dichloroacetonitrile by a UV/peroxymonosulfate process: modeling and optimization based on response surface methodology (RSM)

Xing Zhang; Jilun Yao; Wei Peng; Wensi Xu; Zhongguo Li; Chong Zhou; Zhendong Fang

doi:10.1039/c8ra07009a

Degradation of dichloroacetonitrile by a UV/peroxymonosulfate process: modeling and optimization based on response surface methodology (RSM)

RSC Adv. 2018 Oct 1;8(59):33681-33687. doi: 10.1039/c8ra07009a. eCollection 2018 Sep 28.

Authors

Xing Zhang¹, Jilun Yao², Wei Peng¹, Wensi Xu¹, Zhongguo Li¹, Chong Zhou¹, Zhendong Fang¹

Affiliations

¹ Department of Military Facilities, Army Logistics University of PLA Chongqing 401331 China.
² Engineering and Technological Research Center of National Disaster Relief Equipment, Army Logistics University of PLA Chongqing 401331 China zing@whut.edu.cn.

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.