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- 저자 : EKMEKYAPAR TORUN, Fatma (검색결과 1 건)
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DEDE SAGSOZ, Yesim,YILMAZ, Alper Erdem,EKMEKYAPAR TORUN, Fatma,KOCADAGISTAN, Beyhan,KUL, Sinan The Korean Electrochemical Society 2022 Journal of electrochemical science and technology Vol.13 No.2
In this study, electrochemical treatment of urban wastewater with electrical conductivity of 1000 μS cm<sup>-1</sup> and chemical oxygen demand of 250 mg L<sup>-1</sup> was investigated using the variables of initial pH value, current density and flow rate. Electrocoagulation was used, in which aluminum and stainless steel were selected, as the electrochemical treatment process. The electrocoagulation process was operated in continuous mode. The data obtained in experimental studies show that the best COD removal efficiency occurred in experiments where the initial pH value was 6. The increase in current density from 5 A to 15 A decreased the removal efficiency from 79 to 67%. The increase in flow rate under constant current density also reduced the efficiency of removal as expected. In experiments in which current density and flow rate were examined together, the increase in flow rate allowed the application of higher current densities. This situation led to considerable reductions in energy consumption values, even if the COD removal efficiency did not significantly increase. The high COD removal obtained with the use of high flow rate and high current density indicates that the electrocoagulation process can be used for high flow rate municipal wastewater treatment.
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