Membrane and Water Treatment

  • 제12권1호
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  • Pages.1-9
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  • 2021
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  • 2005-8624(pISSN)
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  • 2092-7037(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Optimization of chemical cleaning of discarded reverse osmosis membranes for reuse

  • Jung, Minsu (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Yaqub, Muhammad (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Lee, Wontae (Department of Environmental Engineering, Kumoh National Institute of Technology)
  • 투고 : 2020.07.29
  • 심사 : 2021.01.06
  • 발행 : 2021.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study optimized the chemical cleaning process of discarded RO membranes for reuse in less demanding separation processes. The effect of physicochemical parameters, including the temperature, cleaning time, pH of the cleaning solution, and addition of additives, on the cleaning process was investigated. The membrane performance was evaluated by testing the flux recovery rate and salt rejection before and after the cleaning process. High temperatures (45-50 ℃) resulted in a better flux recovery rate of 71% with more than 80% salt rejection. Equal time for acid and base cleaning 3-3 h presented a 72.43% flux recovery rate with salt rejection above 85%. During acid and base cleaning, the best results were achieved at pH values of 3.0 and 12.0, respectively. Moreover, 0.05% concentration of ethylenediaminetetraacetic acid presented 72.3% flux recovery, while 69.2% flux was achieved using sodium dodecyl sulfate with a concentration of 0.5%; both showed >80% salt rejection, indicating no damage to the active layer of the membrane. Conversely, 0.5% concentration of sodium percarbonate showed 83.1% flux recovery and 0.005% concentration of sodium hypochlorite presented 85.2% flux recovery, while a high concentration of these chemicals resulted in oxidation of the membrane that caused a reduction in salt rejection.

키워드

참고문헌

  1. Adroit Market Research (2020), Growing Water Scarcity All Over the World Is Driving the Water Desalination Market Growth; Adroit Market Research, TX, USA. https://www.adroitmarketresearch.com/press-release/globalwater-desalination-market-size-and-forecast-2018-2025.
  2. Ang, W.S. (2008), Optimization of Chemical Cleaning of Organic-Fouled Reverse Osmosis Membranes, Yale University, USA.
  3. Ang, W.S., Lee, S. and Elimelech, M. (2006), "Chemical and physical aspects of cleaning of organic-fouled reverse osmosis membranes", J. Membr. Sci. 272, 198-210. https://doi.org/10.1016/j.memsci.2005.07.035.
  4. Ang, W.S., Tiraferri, A., Chen, K.L. and Elimelech, M. (2011), "Fouling and cleaning of RO membranes fouled by mixtures of organic foulants simulating wastewater effluent", J. Membr. Sci. 376, 196-206. https://doi.org/10.1016/j.memsci.2011.04.020.
  5. Coutinho de Paula, E., Gomes, J.C.L. and Amaral, M.C.S. (2017), "Recycling of end-of-life reverse osmosis membranes by oxidative treatment: a technical evaluation", Water Sci. Technol., 76, 605-622. https://doi.org/10.2166/wst.2017.238.
  6. de Paula, E.C. and Amaral, M.C.S. (2018), "Environmental and economic evaluation of end-of-life reverse osmosis membranes recycling by means of chemical conversion", J. Cleaner Product., 194, 85-93. https://doi.org/10.1016/j.jclepro.2018.05.099.
  7. Garcia-Pacheco, R., Landaburu-Aguirre, J., Molina, S., Rodriguez-Saez, L., Teli, S.B. and Garcia-Calvo, E. (2015), "Transformation of end-of-life RO membranes into NF and UF membranes: evaluation of membrane performance", J. Membr. Sci., 495, 305-315. https://doi.org/10.1016/j.memsci.2015.08.025.
  8. Garcia-Pacheco, R., Landaburu-Aguirre, J., Terrero-Rodriguez, P., Campos, E., Molina-Serrano, F., Rabadan, J., Zarzo, D. and Garcia-Calvo, E. (2018), "Validation of recycled membranes for treating brackish water at pilot scale", Desalination, 433, 199-208. https://doi.org/10.1016/j.desal.2017.12.034.
  9. Lawler, W. (2015), "Assessment of end-of-life opportunities for reverse osmosis membranes", Ph.D. Dissertation, School of Chemical Engineering and Faculty of Engineering, USA.
  10. Lawler, W., Antony, A., Cran, M., Duke, M., Leslie, G. and Le-Clech, P. (2013), "Production and characterisation of UF membranes by chemical conversion of used RO membranes", J. Membr. Sci. 447, 203-211. https://doi.org/10.1016/j.memsci.2013.07.015.
  11. Lawler, W., Wijaya, T., Antony, A., Leslie, G., and Le-Clech, P. (2011), "Reuse of reverse osmosis desalination membranes, IDA world congress", Perth Convention and Exhibition Centre Perth, Western Australia, USA.
  12. Lee, K.P., Arnot, T.C. and Mattia, D. (2011), "A review of reverse osmosis membrane materials for desalination-Development to date and future potential", J. Membr. Sci., 370, 1-22. https://doi.org/10.1016/j.memsci.2010.12.036.
  13. Mohamedou, E.O., Suarez, D.B.P., Vince, F., Jaouen, P. and Pontie, M. (2010), "New lives for old reverse osmosis (RO) membranes", Desalination 253, 62-70. https://doi.org/10.1016/j.desal.2009.11.032.
  14. Pontie, M. (2015), "Old RO membranes: Solutions for reuse", Desalination Water Treat., 53, 1492-1498. https://doi.org/10.1080/19443994.2014.943060.
  15. Poseidon Water (2020), Worldwide Seawater Desalination Capabilities, Poseidon Water, CA, USA. https://www.hbfreshwater.com/desalination-worldwide.html.
  16. Shenvi, S.S., Isloor, A.M. and Ismail, A.F. (2015), "A review on RO membrane technology: Developments and challenges", Desalination, 368, 10-26. https://doi.org/10.1016/j.desal.2014.12.042.
  17. Siddiqui, F.A. and Field, R.W. (2016), "Fouling and cleaning of a tubular ultrafiltration ceramic membrane", Membr. Water Treat., 6, 141-160. http://dx.doi.org/10.12989/mwt.2016.7.5.433.
  18. Syed, M., Adams, N., Singh, M., Zsirai, I. (2006) "Chemical cleaning for membranes", U.S. Patent Application No. 11/388,648, USA.
  19. Tu, K.L., Chivas, A.R. and Nghiem, L.D. (2015), "Chemical cleaning effects on properties and separation efficiency of an RO membrane" Membr. Water Treat., 6, 141-160. http://dx.doi.org/10.12989/mwt.2015.6.2.141.
  20. Veza, J.M. and Rodriguez-Gonzalez, J.J. (2003), "Second use for old reverse osmosis membranes: wastewater treatment", Desalination, 157, 65-72. https://doi.org/10.1016/S0011-9164(03)00384-9.

피인용 문헌

  1. Cost analysis and scheduling of the desalination vessel using reverse osmosis technology vol.12, pp.4, 2021, https://doi.org/10.12989/mwt.2021.12.4.177