• Performance Study on Membrane Capacitive Deionization (MCDI) Processes Using the Composite Carbon Electrodes Coated by Cation and Anion Exchange Polymers Based on PVA
  • Jeon YS, Rhim JW
  • PVA계열 양이온 및 음이온교환고분자가 코팅된 복합탄소전극을 이용한 MCDI 성능 연구
  • 전이슬, 임지원
Abstract
In this study, cation and anion exchange polymers containing quaternary ammonium group or sulfonic group on poly(vinyl alcohol) were synthesized. The ion exchange polymers were coated on the carbon electrodes by the casting method and then cross-linked by heat to fabricate composite carbon electrodes. The salt removal efficiency was compared by applying it to the unit cell of the capacitive deionization process. The salt removal efficiencies were measured by varying the adsorption/desorption voltage and time, flow rates, several type of salts, concentration of feed, and city tap water. The best salt removal efficiency of 94% was obtained when it was adsorbed at 1.5 V potential for 5 min and then desorbed at -0.1 V for 3 min. In addition, the tap water of Daejeon city that has the higher content of multivalent ions than of monovalent ions showed the salt removal efficiency of 72%.

본 연구에서는 poly(vinyl alcohol)(PVA)에 4급 암모늄기 또는 술폰기를 함유하는 양이온 및 음이온교환고분자를 합성하였다. 합성한 이온교환고분자는 캐스팅법으로 다공성 탄소전극에 코팅한 후 열에 의해 가교시켜 복합탄소전극을 제조하였다. 제조한 복합탄소전극은 축전식 탈염공정 단위셀 형태에 적용하였으며, 염 제거효율을 비교하였다. 축전식탈염 시험은 흡착전압 및 시간, 유속, 공급액 종류, 공급액 농도, 수도수 등에 대하여 염 제거효율을 알아보았다. 1.5 V의 전위로 5분 흡착시키고, -0.1 V로 3분 탈착시켰을 때 가장 뛰어난 염 제거효율인 94%를 얻을 수 있었다. 또한 1가 이온보다 다가 이온의 함량이 높은 대전시의 수도수 테스트 결과 72%의 염 제거효율을 나타내었다.

Keywords: membrane capacitive deionization (MCDI); quaternized poly(vinyl alcohol) (QPVA); sulfonated poly(vinyl alcohol) (PVA/SSA/PSSA_MA); salt removal efficiency

References
  • 1. Wolf PH, Siverns S, Monti S, Desalination, 182(1-3), 293 (2005)
  •  
  • 2. Lee KP, Arnot TC, Mattia D, J. Membr. Sci., 370(1-2), 1 (2011)
  •  
  • 3. Khawaji AD, Kutubkhanah IK, Wie JM, Desalination, 221(1-3), 47 (2008)
  •  
  • 4. Oren Y, Desalination, 228(1-3), 10 (2008)
  •  
  • 5. Welgemoed TJ, Schutte CF, Desalination, 183(1-3), 327 (2005)
  •  
  • 6. Porada S, Zhao R, van der Wal A, Presser V, Biesheuvel PM, Prog. Mater. Sci., 58(8), 1388 (2013)
  •  
  • 7. Anderson MA, Cudero AL, Palma J, Electrochim. Acta, 55(12), 3845 (2010)
  •  
  • 8. Porada S, Weinstein L, Dash R, Van der Wal A, Bryjak M, Gogotsi Y, Biesheuvel PM, ACS Appl. Mater. Interfaces, 4, 1194 (2012)
  •  
  • 9. Oh HJ, Lee JH, Ahn HJ, Jeong Y, Kim YJ, Chi CS, Thin Solid Films, 515(1), 220 (2006)
  •  
  • 10. Kim YJ, Choi JH, Water Res., 46, 6033 (2012)
  •  
  • 11. Kim JS, Rhim JW, Membr. Water Treatm., 7, 39 (2016)
  •  
  • 12. Rica RA, Brogioli D, Ziano R, Salerno D, Mantegazza F, J. Phys. Chem. C, 116, 16934 (2012)
  •  
  • 13. Lee JB, Park KK, Eum HM, Lee CW, Desalination, 196(1-3), 125 (2006)
  •  
  • 14. Lee JY, Seo SJ, Yun SH, Moon SH, Water Res., 45, 5375 (2011)
  •  
  • 15. Kim JS, Jeon YS, Rhim JW, Sep. Purif. Technol., 157(-), 45 (2016)
  •  
  • 16. Kim KY, Rhim JW, Membr. J., 26, 62 (2016)
  •  
  • 17. Lee JH, Choi JH, J. Membr. Sci., 409(-), 251 (2012)
  •  
  • 18. Liang P, Yuan L, Yang X, Zhou S, Huang X, Water Res., 47, 2523 (2013)
  •  
  • 19. Ryu JH, Kim TJ, Lee TY, Lee IB, J. Taiwan Inst. Chem. Eng., 41, 506 (2010)
  •  
  • 20. Wang CM, Song HO, Zhang QX, Wang BJ, Li AM, Desalination, 365(-), 407 (2015)
  •  
  • 21. Choi JH, Kim YJ, Lee JH, Korean Patent 008994 (2012).
  •  
  • 22. Xu TW, J. Membr. Sci., 263(1-2), 1 (2005)
  •  
  • 23. Jeon YS, Rhim JW, Polym. Korea, 40, 147 (2016)
  •  
  • 24. Jeon YS, Kim KY, Rhim JW, Membr. J., 25, 144 (2015)
  •  
  • 25. Shin MS, Byun YJ, Choi YW, Kang MS, Park JS, Int. J. Hydrog. Energy, 39(29), 16556 (2014)
  •  
  • 26. Liao GM, Yang CC, Hu CC, Pai YL, Lue SJ, J. Membr. Sci., 485(-), 17 (2015)
  •  
  • 27. Xiong Y, Fang J, Zeng QH, Liu QL, J. Membr. Sci., 311(1-2), 319 (2008)
  •  
  • 28. Kim YJ, Choi JH, Sep. Purif. Technol., 71(1), 70 (2010)
  •  
  • 29. Kwak NS, Koo JS, Hwang TS, Choi EM, Desalination, 282, 138 (2012)
  •  
  • 30. Kim JS, Kim CS, Shin HS, Rhim JW, Macromol. Res., 23(4), 360 (2015)
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
  • Indexed in SCIE

This Article

  • 2017; 41(2): 352-360

    Published online Mar 25, 2017

  • 10.7317/pk.2017.41.2.352
  • Received on Dec 23, 2016
  • Accepted on Jan 18, 2017