DOI QR코드

DOI QR Code

Effects of various foulants on flux changes in membrane distillation process

막증류 공정에서 오염 인자가 플럭스 변화에 미치는 영향

Park, Chansoo;Lee, Chang-Kyu;Kim, Jong-oh;Choi, June-Seok
박찬수;이창규;김종오;최준석

  • Received : 2016.04.21
  • Accepted : 2016.06.07
  • Published : 2016.06.01

Abstract

The effects of dissolved inorganic and organic matter in seawater and the characteristics of fouling on the membrane surface were investigated within membrane distillation (MD) process. The changes of the membrane flux of PE and PVDF hollow fiber membranes under natural and synthetic seawater were compared with given variances of temperature. The flux of both membranes under the synthetic seawater, without any organic matter, were higher than that of the natural seawater, indicating the organic fouling on the membrane surface. The surface of the membrane was analyzed using scanning electron microscope (SEM) to examine the fouling. The experiment with organics has shown the formation of thin film over the membrane surface, while the experiment with inorganics has shown only the formation of inorganic crystals. The results indicated the organic matter as the major foulants and that the organics affected the formation of the crystals. Permeate water conductivity of all conditions verified the quality of the water to be better if not similar to that of RO.

Keywords

$CaSO_4$;crystallization;foulant;hydrophobic membrane;MD

References

  1. Al-Karaghouli, A. and Kazmerski, L. L. (2013). Energy consumption and water production cost of conventional and renewable-energy-powered desalination processes, Renewable and Sustainable Energy Reviews, 24, 343-356. https://doi.org/10.1016/j.rser.2012.12.064
  2. Desalination in History. (2005). Halcrow Water Services.
  3. Efrem, C., Xiaosheng, J., Gianluca, D. P., Al, O. S., Enrica, F. and Enrico, D. (2010). Membrane distillation operated at high seawater concentration factors: Role of the membrane on $CaCO_3$ scaling in presence of humic acid, Journal of membrane science, 346, 263-269. https://doi.org/10.1016/j.memsci.2009.09.044
  4. Elbourawi, M., Ding, Z., Ma, R. and Khayet, M. (2006). A framework for better understanding membrane distillation separation process, Journal of membrane science, 285, 4-29. https://doi.org/10.1016/j.memsci.2006.08.002
  5. Godino, M. P., Pena, L., Rincon, C., and Mengual, J. I. (1997). Water production from brines by membrane distillation, Desalination, 108, 91-97. https://doi.org/10.1016/S0011-9164(97)00013-1
  6. Khayet, M., & Matsuura, T. (2011). Membrane Distillation: Principles and Applications: Elsevier.
  7. Min, J. H., Park, M. S., and Kim, J. (2015). Measurement of liquid entry pressure of PE and PVDF hollow fiber membranes in membrane distillation process, Membrane Journal, 25, 216-222 https://doi.org/10.14579/MEMBRANE_JOURNAL.2015.25.3.216
  8. Noreddine, G., Thomas, M. M., and Gary, L. A. (2013). Technical review and evaluation of the economics of water desalination: Current and future challenge for better water supply sustainability, Desalination, 309, 197-207. https://doi.org/10.1016/j.desal.2012.10.015
  9. Park, Y. S. (2013). Membrane fouling by inorganic salts in treatment of seawater reverse osmosis brine using membrane distillation, Master's Thesis, UST, Daejeon, South Korea.
  10. Perez-Gonzaliz, A., Urtiage, A. M., Ibanez, R., and Ortiz, I. (2012). State of the art and review on the treatment technologies of water reverse osmosis concentrates, Water research, 46, 267-283. https://doi.org/10.1016/j.watres.2011.10.046
  11. Qtaishat, M., Matsuura, T., Kruczek B., and Khayet, M. (2008). Heat and mass transfer analysis in direct contact membrane distillation, Desalination, 219, 272-292. https://doi.org/10.1016/j.desal.2007.05.019
  12. Raymond, C., Jolanda, V. M., Mark, R., Alex, V. R. V. D., Jan, H. H., and Robin, V. L. (2013). Integrated membrane distillation-crystallization: Process design and cost estimations for seawater treatment and fluxes of single salt solutions, Desalination, 323, 8-16. https://doi.org/10.1016/j.desal.2013.02.013
  13. Roberts, D. A., Johnston, E. L., Knott, N. (2010). Impacts of desalination plant discharges on the marine environment: A critical review of published studies, Water research, 44, 5117-5128. https://doi.org/10.1016/j.watres.2010.04.036
  14. Srisurichan, S., Jiraratananon, R., and Fane, A. G. (2004). Humic acid fouling in the membrane distillation process, Desalination, 174, 63-72.
  15. Takanori, F., Shuta, T., Keiko, N., and Chitoshi, Y. (2015), Synthesis, crystal structure, and thermal properties of $CaSO_4{\cdot}H_2O$ single crystals, International journal of chemistry, 7, 12-20.

Acknowledgement

Supported by : 국토교통부