Feasibility and energy consumption analysis of phenol removal from salty wastewater by electro-electrodialysis

Abstract

The discharge of phenol-containing wastewater has become a crucial and health threatening environmental issue. In this paper, an electro-electrodialysis (EED) process was investigated to remove phenol molecules in the form of phenoxide ions, and simultaneously desalt the laboratory-prepared salty wastewater. The influence of applied voltage, sodium sulfate and phenol concentrations on the separation performance and energy consumption of the EED process was studied. More than 90% of the phenol could be removed, illustrating the feasibility of the EED process. The specific energy consumption for phenol removal was primarily influenced by the concentration and characteristics of the competitive..