Total dissolved solids removal by electrochemical ion exchange (EIX) process

In the present investigation, synthetic wastewater was prepared by the addition of required amount of salts into deionized water. Their performance, on removal of Cl-, SO42-, PO43-, Ca2+, Fe2+ and Mg2+ in laboratory scale plate and frame type electrochemical ion exchange (EIX) cells, were evaluated under varying operating conditions. Ruthenium dioxide coated titanium plates (RuO2/Ti) were used as anode and stainless steel plates as cathode in all the four different EIX cells used in the present investigation. All the four EIX cells were run for a maximum of 7 h. Almost complete removal of all the above ionic solids were observed within 4.5-7 h under one or more test conditions. (c) 2008 Elsevier Ltd. All rights reserved.