Electrochemical in situ regeneration of granular activated carbon using a three-dimensional reactor |
| |
Authors: | Hong Sun Zhigang Liu Ying Wang and Yansheng Li |
| |
Institution: | School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China |
| |
Abstract: | Electrochemical in situ regeneration of granular activated carbon (GAC) saturated with phenol was experimentally investigated using a three-dimensional electrode reactor with titanium filter electrode arrays. The feasibility of the electrochemical regeneration has been assessed by monitoring the regeneration efficiency and chemical oxygen demand (COD). The influence of the applied current, the effluent flow rate, and the effluent path of the electrochemical cell have been systematically studied. Under the optimum conditions, the regeneration efficiency of GAC could reach 94% in 2 hr, and no significant declination was observed after five-time continuous adsorption-regeneration cycles. The adsorption of organic pollutants was almost completely mineralized due to electrochemical oxidation, indicating that this regeneration process is much more potentially cost-effective for application. |
| |
Keywords: | granular activated carbon electrochemical regeneration phenol three-dimensional |
|
| 点击此处可从《环境科学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《环境科学学报(英文版)》下载免费的PDF全文 |
|