Experimental study of desalination and ion selection performance using electro-sorption technology with an activated carbon fiber electrode

Abstract

ABSTRACT The realization of high-efficiency desalination technologies is the key to the reuse of circulating cooling sewage in power plants. Desalination experiments were carried out on an electro-sorption device with an activated carbon fiber (ACF) plate as an electrode, using the mixed salt solution to simulate actual circulating cooling sewage. The effects of flow rate and voltage on desalination and ion selection performance were investigated in the paper. Experimental results show that different ions can be effectively removed using activated carbon fiber electrodes. Under the same adsorption conditions, the adsorption rate of ions is inversely proportional to the mass-to-charge ratio; the smaller the hydration radius of ions, the larger the ion removal rate; the ion selection performance is related to the pore size distribution of the selected electrode material. The experimental results can provide basic data and reference for the treatment of circulating cooling water using electro-sorption technology.