title: Electrochemical in situ regeneration of granular activated carbon using a three-dimensional reactor.
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.
authors: School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
authors: Hong
authors: H
authors: Sun
authors: School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China. Electronic address: lzg@djtu.edu.cn.
authors: Zhigang
authors: Z
authors: Liu
authors: School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
authors: Ying
authors: Y
authors: Wang
authors: School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China.
authors: Yansheng
authors: Y
authors: Li
mesh_terms: D000327:Adsorption; D057919:Biological Oxygen Demand Analysis; D002606:Charcoal / Q000737:chemistry; D004560:Electricity; D004563:Electrochemistry; D004566:Electrodes; D012212:Rheology; D014865:Waste Disposal, Fluid
chemical_list: D002606:Charcoal
keywords: electrochemical regeneration; granular activated carbon; phenol; three-dimensional