@article{Aqeel T. Kadhim, Alaa N. Ghanim_2022, title={Demulsification and Purification of Petroleum Oily Wastewater Using Electrochemical Techniques}, url={http://thedesignengineering.com/index.php/DE/article/view/9076}, abstractNote={<p>This research deals with the treatment of oily wastewater effluents of petroleum refineries using hybrid electrocoagulation/electroflotation (EC/EF) techniques. A dynamic flow system was constructedusingan improved design of a compact electrochemical reactor containing two parallel vertical sheetsas electrodes.A galvanostatic transient techniquefor two types of electrodes, Al-Al and Al-C felt were used to achieve the hybrid (EC/EF) treatment in one reactor. Emulsified synthetic wastewater was prepared by mixing crude oil with deionized waterand sodium dodecyl was added as an emulsion stabilizing agent. Electrocoagulation produces Al<sup>3+</sup> ions by corroding sacrificial anodes, releasing active coagulant precursors into the solution. Furthermore, the release of finely dispersed H<sub>2 </sub>gas bubbles at the cathode causes flog to lift to the upper surface of the solution.All experiments were carried out in continuous operation for two hours with a variety of operating conditions, including initial O/W concentration, current density, volumetric flowrate, and cathode type.Results revealed that for an initial O/W emulsion of 300 ppm and 30 mA/cm<sup>2 </sup>current density with different solution flowrate of2,4 and 6 L/hr the COD removal efficiency was 90,40 and 80% for Al-Al electrodes and 83,79 and78% for Al-C felt, respectively. The specific electrical energy consumption (SEEC) and the instantaneous current efficiency (ICE) for the demulsification experiments were also studied.</p&gt;}, number={1}, journal={Design Engineering}, author={Aqeel T. Kadhim, Alaa N. Ghanim}, year={2022}, month={Feb.}, pages={1499-1508} }