@article{Al-Khafaji_Mohammed_2021, title={Performance of Combined Electrocoagulation-Advanced Electrochemical Oxidation Used for Oil Field Produced Water Treatment}, volume={11}, url={https://jprs.gov.iq/index.php/jprs/article/view/432}, DOI={10.52716/jprs.v11i1.432}, abstractNote={<p>Considerable amounts of produced water (PW) are usually accompanied with the<br>production of oil. This study proposed a combination of electrocoagulation (EC) - electro-<br>Fenton (EF) process for oxidation organic compounds in PW to reduce the chemical oxygen<br>demand (COD) to below regulation limits. The PW used in this study was collected from<br>oilfield in the Midland Oil Company. Pretreatment of the PW was conducted using batch EC<br>technique with aluminum electrodes to eliminate the suspended and dissolved solids and to<br>reduce the COD and treatment cost. Optimization of EC process revealed that optimum current<br>density, pH, and reaction time were 7.83 mA/cm2, 7.24, 20.40 minutes respectively. Under<br>these conditions the COD removal percentage was 73.97% starting from initial COD of 1730<br>mg/l.Batch and continuous electro-Fenton processes were investigated using dimensionally<br>stable anode Ti-RuO2/IrO2 and activated carbon fiber felt (ACFF) cathode. The effect of<br>crucial process variables on COD removal efficiency was investigated using response surface<br>methodology. A second order polynomial model equations were constructed and the results<br>was analyzed by the analysis of variance (ANOVA). It was concluded that a combination of<br>electrocoagulation followed by electro-Fenton process is effective for treating oilfield<br>produced water and further improvement can be achieved by photo assisting the process. A<br>total COR removal efficiency of 98% was achieved.</p>}, number={1}, journal={Journal of Petroleum Research and Studies}, author={Al-Khafaji, Rand Q. kadhem and Mohammed, Abdul Halim A-K}, year={2021}, month={Mar.}, pages={107-123} }