期刊
CHEMICAL ENGINEERING JOURNAL
卷 220, 期 -, 页码 311-319出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2013.01.040
关键词
Bipolar membrane electrodialysis; Tetrapropyl ammonium hydroxide; Ion-exchange membrane; Cell configuration
Conventional methods of tetrapropyl ammonium hydroxide (TPAOH) production via electrolysis, reaction of tetrapropyl ammonium halide with silver oxide, and ion-exchange suffer from high production costs, low quality, and environmental pollution. In this work, continuous bipolar membrane electrodialysis (BMED) is employed for the preparation of TPAOH from its halide as a sustainable alternative process. Novel ion-exchange membranes were developed for lab and pilot scale experiments, which indicate an acceptable current efficiency and energy consumption. The results indicate that a cell configuration with four compartments yielded the best results when the salt concentration was 0.3 mol L-1 and the current density was 200 A m(-2). The highest conversion in electrodialysis was 91.6%, with a high purity of trace alkali metal ions and low Br- content (176 ppm) at a TPAOH concentration of 25%. The energy consumption is 1.897 kW h kg(-1). Continuous pilot experiments demonstrate the feasibility of manufacturing TPAOH by direct splitting its halide for industrial application. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据