상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제35권4호
  • /
  • Pages.293-300
  • /
  • 2021
  • /
  • 1225-7672(pISSN)
  • /
  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
권호 표지
DOI QR코드

DOI QR Code

정수처리 공정 적용을 위한 MCDI (Membrane Capacitive Deionization) Module의 수용액 내 TDS 제거 특성에 관한 연구

A study on the TDS removal characteristics in aqueous solution using MCDI module for application of water treatment process

  • 오창석 (과학기술연합대학원대학교 건설환경공학과) ;
  • 안주석 (한국건설기술연구원 국토보전연구본부) ;
  • 오현제 (과학기술연합대학원대학교 건설환경공학과)
  • Oh, Changseog (School of Civil and Environmental Engineering, University of Science and Technology) ;
  • An, Jusuk (Department of Environmental Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Oh, Hyun-Je (School of Civil and Environmental Engineering, University of Science and Technology)
  • 투고 : 2021.05.28
  • 심사 : 2021.08.15
  • 발행 : 2021.08.15
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Recently, various researches have been studied, such as water treatment, water reuse, and seawater desalination using CDI (Capacitive deionization) technology. Also, applications like MCDI (Membrane capacitive deionization), FCDI (Flow-capacitive deionization), and hybrid CDI have been actively studied. This study tried to investigate various factors by an experiment on the TDS (Total dissolved solids) removal characteristics using MCDI module in aqueous solution. As a result of the TDS concentration of feed water from 500 to 2,000 mg/L, the MCDI cell broke through faster when the higher TDS concentration. In the case of TDS concentration according to the various flow rate, 100 mL/min was stable. In addition, there was no significant difference in the desorption efficiency according to the TDS concentration and method of backwash water used for desorption. As a result of using concentrated water for desorption, stable adsorption efficiency was shown. In the case of the MCDI module, the ions of the bulk solution which is escaped from the MCDI cell to the spacer during the desorption process are more important than the concentration of ions during desorption. Therefore, the MCDI process can get a larger amount of treated water than the CDI process. Also, prepare a plan that can be operated insensitive to the TDS concentration of backwash water for desorption.

키워드

과제정보

본 결과물은 환경부의 재원으로 한국환경산업기술원의 상하수도 혁신 기술개발사업의 지원을 받아 연구되었습니다.(2020002700003)

참고문헌

  1. Ahmad, F., Khan, S.J., Jamal, Y., Kamran, H., Ahsan, A., Ahmad, M. and Khan, A. (2015). Desalination of brackish water using capacitive deionization (CDI) technology, Desalination, Water Treat., 57, 17.
  2. Biesheuvel, P.M. and van der Wal, A. (2010). Membrane capacitive deionization, J. Membr. Sci., 346, 256-262. https://doi.org/10.1016/j.memsci.2009.09.043
  3. Biesheuvel, P.M., Zhao, R., Porada, S. and van der Wal, A. (2011). Theory of membrane capacitive deionization including the effect of the electrode pore space, J. Colloid Interface Sci., 360, 239-248. https://doi.org/10.1016/j.jcis.2011.04.049
  4. Choi, J.H. and Kim, H.K. (2015). Comparison of Selective Removal of Nitrate Ion in Constant Voltage and Constant Current Operation in Capacitive Deionization, Korean Chem. Eng. Res., 53(3), 269-275. https://doi.org/10.9713/kcer.2015.53.3.269
  5. Choi, J.H. (2014). Comparison of constant voltage(CV) and constant current(CC) operation in the membrane capacitive deionisation process., Desalin. Water Treat., 56, 921-928. https://doi.org/10.1080/19443994.2014.942379
  6. Jande, Y.A.C. and Kim, W.S. (2013). Desalination Using Capacitive Deionization at Constant Current, Desalination, 329, 29-34. https://doi.org/10.1016/j.desal.2013.08.023
  7. Kang, J.I., Kim, T.Y., Jo, K.S. and Yoon, J.Y., (2014). Comparison of salt adsorption capacity and energy consumption between constant current and constant voltage operation in capacitive deionization, Desalination, 352, 52-57. https://doi.org/10.1016/j.desal.2014.08.009
  8. Oren, Y. (2008). Capacitive deionization (CDI) for desalination and water treatment-past, present and future (a review), Desalination, 228, 10-29. https://doi.org/10.1016/j.desal.2007.08.005
  9. Porada, S., Zhao, R., van der Wal, A., Presser, V. and Biesheuvel, P.M. (2013). Review on the science and technology of water desalination by capacitive deionization, Prog. Mater. Sci., 58, 1388-1442. https://doi.org/10.1016/j.pmatsci.2013.03.005
  10. Song, Y.J., Yun, W.S. and Rhim, J.W. (2017). Studies of performance and enlarged capacity through multi-stages stacked module in membrane capacitive deionization process, Memb. J., 27(5), 449-457. https://doi.org/10.14579/MEMBRANE_JOURNAL.2017.27.5.449
  11. Suss, M.E., Porada, S., Biesheuvel, P.M., Yoon, J. and Presser, V. (2015). Water desalination via capacitive deionization: what is it and what can we expect from it?, Energy Environ. Sci., 8, 2296. https://doi.org/10.1039/C5EE00519A
  12. Yao, Q. and Tang, H. (2017). Effect of Desorption Methods on Electrode Regeneration Performance of Capacitive Deionization, J. Environ. Eng., 143(9), 04017047. https://doi.org/10.1061/(ASCE)EE.1943-7870.0001245
  13. Yun, W.S., Cheong, S.I. and Rhim, J.W. (2018). Effect of ion exchange capacity on salt removal rate in membrane capacitive deionization process., Memb. J., 28(5), 332-339. https://doi.org/10.14579/MEMBRANE_JOURNAL.2018.28.5.332
  14. Zhao, R., Biesheuvel, P.M. and van der Wal, A. (2012). Energy consumption and constant current operation in membrane capacitive deionization., Energy Environ. Sci., 5, 9520-9527. https://doi.org/10.1039/c2ee21737f
  15. Zhao, X., Wei, H., Zhao, H., Wang, Y., and Tang, N. (2020). Electrode materials for capacitive deionization: A review, J. Electroanal. Chem., 873, 114416. https://doi.org/10.1016/j.jelechem.2020.114416