Linear control of electrochemical tubular reactor system-Removal of Cr(VI) from wastewaters

作     者：Wu, Wei Peng, Jiyan-Jh 

作者机构：Natl Yunlin Univ Sci & Technol Dept Chem & Mat Engn Yunlin 64002 Taiwan 

出 版 物：《JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS》 (J. Taiwan Inst. Chem. Eng.)

年 卷 期：2011年第42卷第3期

页      面：498-505页

核心收录：

学科分类：0817[工学-化学工程与技术] 08[工学] 

基　　金：National Science Council of the Republic of China 

主　　题：Distributed parameter system Dynamic simulation PID control Wastewater treatment 

摘      要：An electrochemical tubular reactor system, which is used to remove the hexavalent chromium Cr(VI) from wastewaters, is presented. Under specific modeling and operating constraints, the axial dispersion reactor is described by the coupled nonlinear partial differential equations (PDEs) under Danckwerts boundary conditions. Through the composite finite difference combination, the lumped differential-algebraic equations (DAEs) turn out to be a two-input/two-output system. The overall system stability analysis is investigated via the Lyapunov s first method. According to the prescribed control configuration, the closed-loop simulation shows that a multi-loop PID control scheme can ensure the outlet concentration of Cr(VI) less than 0.5 mg/L in wastewaters. (C) 2010 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.