Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
권호 표지
DOI QR코드

DOI QR Code

Hydrophilic/Hydrophobic Dual Surface Coatings for Membrane Distillation Desalination

막증류 담수화를 위한 친수성/소수성 이중 표면 코팅

  • Kim, Hye-Won (Water Cycle Research Center, Korea Institute of Science and Technology) ;
  • Lee, Seungheon (Water Cycle Research Center, Korea Institute of Science and Technology) ;
  • Jeong, Seongpil (Division of Energy and Environment Technology, University of Science and Technology) ;
  • Byun, Jeehye (Division of Energy and Environment Technology, University of Science and Technology)
  • 김혜원 (한국과학기술연구원 물자원순환연구단) ;
  • 이승헌 (한국과학기술연구원 물자원순환연구단) ;
  • 정성필 (과학기술연합대학원대학교 에너지-환경.융합) ;
  • 변지혜 (과학기술연합대학원대학교 에너지-환경.융합)
  • Received : 2022.05.09
  • Accepted : 2022.05.30
  • Published : 2022.05.30
Download PDF
⟨ Previous Next ⟩

Abstract

Membrane distillation (MD) has emerged as a sustainable desalination technology to solve the water and energy problems faced by the modern society. In particular, the surface wetting properties of the membrane have been recognized as a key parameter to determine the performance of the MD system. In this study, a novel surface modification technique was developed to induce a Janus-type hydrophilic/hydrophobic layer on the membrane surface. The hydrophilic layer was created on a porous PVDF membrane by vapor phase polymerization of the pyrrole monomer, forming a thin coating of polypyrrole on the membrane walls. A rigid polymeric coating layer was created without compromising the membrane porosity. The hydrophilic coating was then followed by the in-situ growth of siloxane nanoparticles, where the condensation of organosilane provided quick loading of hydrophobic layers on the membrane surface. The composite layers of dual coatings allowed systematic control of the surface wettability of porous membranes. By the virtue of the photothermal property of the hydrophilic polypyrrole layer, the desalination performance of the coated membrane was tested in a solar MD system. The wetting properties of the dual-layer were further evaluated in a direct-contact MD module, exploring the potential of the Janus membrane structure for effective and low-energy desalination.

Keywords

Acknowledgement

본 연구는 한국연구재단의 지원을 받아 수행되었습니다(No. 2021R1C1C1005774).

References

  1. Alkhudhiri, A., Darwish, N., and Hilal, N. (2012). Membrane distillation: A comprehensive review, Desalination, 287, 2-18. https://doi.org/10.1016/j.desal.2011.08.027
  2. Deka, B. J., Guo, J., Khanzada, N. K., and An, A. K. (2019). Omniphobic re-entrant PVDF membrane with ZnO nanoparticles composite for desalination of low surface tension oily seawater, Water Research, 165, 114982. https://doi.org/10.1016/j.watres.2019.114982
  3. Huang, Z., Yang, G., Zhang, J., Gray, S., and Xie, Z. (2021). Dual-layer membranes with a thin film hydrophilic MOF/PVA nanocomposite for enhanced antiwetting property in membrane distillation, Desalination, 518, 115268. https://doi.org/10.1016/j.desal.2021.115268
  4. Kim, H. W., Yun, T., Hong, S., Lee, S., and Jeong, S. (2020). Retardation of wetting for membrane distillation by adjusting major components of seawater, Water Research, 175, 115677. https://doi.org/10.1016/j.watres.2020.115677
  5. Kim, H. W., Yun, T., Kang, P. K., Hong, S., Jeong, S., and Lee, S. (2019). Evaluation of a real-time visualization system for scaling detection during DCMD, and its correlation with wetting, Desalination, 454, 59-70. https://doi.org/10.1016/j.desal.2018.12.014
  6. Lin, S., Nejati, S., Boo, C., Hu, Y., Osuji, C. O., and Elimelech, M. (2014). Omniphobic membrane for robust membrane distillation, Environmental Science & Technology Letters, 1(11), 443-447. https://doi.org/10.1021/ez500267p
  7. Qin, G. and Qiu, J. (2019). Ordered polypyrrole nanorings with near-infrared spectrum absorption and photothermal conversion performance, Chemical Engineering Journal, 359, 652-661. https://doi.org/10.1016/j.cej.2018.11.088
  8. Razaqpur, A. G., Wang, Y., Liao, X., Liao, Y., and Wang, R. (2021). Progress of photothermal membrane distillation for decentralized desalination: A review, Water Research, 201, 117299. https://doi.org/10.1016/j.watres.2021.117299
  9. Su, D., Li, Y. L., An, H. J., Liu, X., Hou, F., Li, J. Y., and Fu, X. (2010). Pyrolytic transformation of liquid precursors to shaped bulk ceramics, Journal of the European Ceramic Society, 30(6), 1503-1511. https://doi.org/10.1016/j.jeurceramsoc.2009.11.015
  10. Tabaciarova, J., Micusik, M., Fedorko, P., and Omastova, M. (2015). Study of polypyrrole aging by XPS, FTIR and conductivity measurements, Polymer Degradation and Stability, 120, 392-401. https://doi.org/10.1016/j.polymdegradstab.2015.07.021
  11. Tijing, L. D., Woo, Y. C., Choi, J. S., Lee, S., Kim, S. H., and Shon, H. K. (2015). Fouling and its control in membrane distillation-A review, Journal of Membrane Science, 475, 215-244. https://doi.org/10.1016/j.memsci.2014.09.042
  12. Wang, H., Yuan, X., Wu, Y., Chen, X., Leng, L., Wang, H., Hui, L., and Zeng, G. (2015). Facile synthesis of polypyrrole decorated reduced graphene oxide-Fe3O4 magnetic composites and its application for the Cr(VI) removal, Chemical Engineering Journal, 262, 597-606. https://doi.org/10.1016/j.cej.2014.10.020
  13. Wang, X., Liu, Q., Wu, S., Xu, B., and Xu, H. (2019). Multilayer polypyrrole nanosheets with self-organized surface structures for flexible and efficient solar-thermal energy conversion, Advanced Materials, 31(19), 1807716. https://doi.org/10.1002/adma.201807716
  14. Yim, J. E., Lee, S. H., Jeong, S., Zhang, K. A. I., and Byun, J. (2021). Controllable porous membrane actuator by gradient infiltration of conducting polymers, Journal of Materials Chemistry A, 9(8), 5007-5015. https://doi.org/10.1039/D0TA12023E
  15. Zhang, L., Chen, K. S., and Yu, H. Z. (2020a). Superhydrophobic glass microfiber filter as background-free substrate for quantitative fluorometric assays, ACS Applied Materials & Interfaces, 12(6), 7665-7672. https://doi.org/10.1021/acsami.9b17432
  16. Zhang, Y., Shen, F., Cao, W., and Wan, Y. (2020b). Hydrophilic/ hydrophobic Janus membranes with a dual-function surface coating for rapid and robust membrane distillation desalination, Desalination, 491, 114561. https://doi.org/10.1016/j.desal.2020.114561
  17. Zhu, D., Hu, N., and Schaefer, D. W. (2020). Chapter 1 - Water-based sol-gel coatings for military coating applications, In Zarras, P., Soucek, M. D., and Tiwari, A. (Eds.), Handbook of Waterborne Coatings (pp. 1-27), Elsevier.