Regeneration of granular activated carbon by an electrochemical process

被引：109
作者：
Weng, Chih-Huang [1 ]
Hsu, Ming-Chien [1 ]
机构：
[1] I Shou Univ, Dept Civil & Ecol Engn, Kaohsiung 84008, Taiwan
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2008年 / 64卷 / 02期
关键词：
Activated carbon; Adsorption; Electrochemical regeneration; Methylene blue;
D O I：
10.1016/j.seppur.2008.10.006
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
An electrochemical (EC) process was used to investigate the effectiveness of regeneration of field-spent granular activated carbon (SGAC) collected from a wastewater treatment plant. The influences of regeneration parameters such as processing time, voltage gradient, and processing fluid, were performed. The performance of EC regeneration was evaluated via batch methylene blue (MB) adsorption tests. Increasing voltage and prolonging the process would increase the regeneration efficiency (RE). By considering the energy demand, the optimum conditions for a 91.1% RE with an energy cost of 39 US$/ton were: 0.1 M NaCl, 24 h, and 5 V/cm. Compared to thermal, ultrasonic, and base washing regenerations, this EC process is effective and economic viable for GAC regeneration. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：227 / 236
页数：10
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