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TiO2 Removal using Electrocoagulation-electroflotation Two-step Process

전기응집-전기부상 2단계 공정을 이용한 TiO2 제거

  • Dong-Seog Kim (Department of Health and Safety, Catholic University of Daegu) ;
  • Young-Seek Park (Division of Liberal Studies, Daegu University)
  • 김동석 (대구가톨릭대학교 보건안전학과) ;
  • 박영식 (대구대학교 자유전공학부)
  • Received : 2023.03.16
  • Accepted : 2023.04.14
  • Published : 2023.05.31

Abstract

There is a need for a method that can effectively remove wastewater containing small-sized particles such as TiO2. In this study, we attempted to remove TiO2 wastewater using electrocoagulation-electroflotation two-step separation. The TiO2 wastewater was effectively removed via batch electrocoagulation-electroflotation separation. However, in the batch process, the simultaneous operation of electrocoagulation and electoflotation was challenging due to the high residual turbidity. In the continuous operation, electrocoagulation and electoflotation reactors were kept separate. The turbidity removal in continuous operation was similar to that in the batch process, nevertheless, the residual Al concentration was high, leading to the conclusion that counterterm ensures against residual Al were necessary.

Keywords

Acknowledgement

본 연구는 2022년도 대구대학교 교내연구비의 지원을 받아 진행되었으며, 이에 감사드립니다.

References

  1. Han, M. Y., Song, J. M., Park, S. C., 2004, Comparison of electrocoagulation and chemical coagulation in removal on warter treatment, J. Korean Soc. Water & Wastewater, 18, 689-695.
  2. Jung, K., Kim, D. K., Kim, S. K., Kim, W. J., Ko, S. O., 2015, Evalustion of operation parameters for the removal of algae by electro-coagulation, J. Korean Soc. Water Environ., 31, 94-102. https://doi.org/10.15681/KSWE.2015.31.2.94
  3. Kim, D. J., Lee, K. H., Kwon, A. Y., Han, M. Y., 2000, A Study on the coagulation characteristics of TiO2, Proceedings of the Joint Fall Academic Presentation of the Korean Society of Water & Wastewater.Korean Society on Water Environment, 277-280.
  4. Kim, D. J., Lee, K. H., Kwon, A. Y., Han, M. Y., 2001, Optimum operation conditions for TiO2 wastewater treatment by electroflotation, J. Korean Soc. Water & Wastewater, 15, 34-39.
  5. Kim, D. S., Park, Y. S., 2007, Study on bubble generation and size by dimensionally stable anode in electroflotation process, J. Environ. Sci., 16, 1189-1195. https://doi.org/10.5322/JES.2007.16.10.1189
  6. Kim, H. T., 1995, Water treatment by chemical coagulation and electro-coagulation system, Prof. Eng., 10, 20-24.
  7. Lee, J. Y., 2017, Electrochemical treatment of water soluble cutting oil using electrode material, J. Korean Soc. Water Treat., 25, 67-75. https://doi.org/10.17640/KSWST.2017.25.6.67
  8. Mathur, S., Singh, P., Moudgil, B. M., 2000, Advanced in selective floculation technology for solid-solid separations, Int. J. Miner. Process, 58, 201-222. https://doi.org/10.1016/S0301-7516(99)00072-1
  9. Oh, M. Y., Kim, Y. K., 2001, Removal characteristics of organics in landfill leachate by electrocoagulation, J. Korean Soc. Environ. Eng., 23, 31-38.
  10. Park, D. W., 2002, Electrochemical wastewater treatment, is it a new alternative?, J. Korean Soc. Water Qual., 18, 441-448.
  11. Park, Y. S., 2010, Turbidity treatment of TiO2 wastewater by electrocoagulation/flotation process, J. Environ. Sci., 19, 89-96. https://doi.org/10.5322/JES.2010.19.1.089
  12. So, J. H., Choi, S. I., Jo, J. H., Han, S. K., Ryu, D. H., 2003, A Study on oil-water separation from soil wash effluent using electroflotation: effects of electrolytes, Proceedings of Fall Conference of Korean Society of soil and Groundwater Environment, 463-465.