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DOI : , Vol.22, No.5, 103 ~ 110, 2014
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| Title |
| Effect of pH and Electrolyte on Removal Efficiencies in the Electrochemical Treatment |
| 이재용 Jae Yong Lee , 장성호 Seong Ho Jang , 홍성철 Sung Chul Hong , 이병인 Pyong In Yi , 김한수 Han Soo Kim , 박진식 Jin Sik Park , 문추연 Choo Yeun Moon |
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| Abstract |
| Conventional wastewater treatment processes are inefficient for the removal of these types of toxic and hazardous pollutants from wastewater. Different cathodes as working electrode and anodes as counter electrode used in this process are analyzed. Also various pollutants removed by this process are evaluated. Quick removal and mineralization of pollutants and their intermediate reaction products were reported. The effects of initial pH, electrolyte on the performance of electrochemical technique are investigated by using sacrificial SUS 316 electrodes. CODCr, Oil & Grease and T-N removal characteristics of metalworking fluid by electrochemical process at initial pH 4, 7, 10 showed that CODCr removal efficiency were 66.9%, 58.3% and 24.2%, respectively. CODCr removal efficiency of metalworking fluid depended on the change of electrolytes showed that the removal efficiency of 42% to 47% in Na2SO4, H2SO4 and HNO3. However, NaCl showed high removal efficiency of 71%, approximately 30% higher than that of other electrolytes. |
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| Key Words |
| Electrochemical treatment, pH, Electrolyte, Metalworking Fluids, SUS 316 |
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