Effect of antiscalants and operating variables on the performance of desalination by direct contact membrane distillation (DCMD)

  • A.L. Peñaranda-López
  • B. Torrestiana-Sánchez
Keywords: Antiscalant, seawater, desalination, operation conditions, direct contact membrane distillation


The effect of hydrodynamic conditions (feed and permeate flow rates) and the action of six different types of antiscalants on desalination of seawater from the Gulf of Mexico by direct contact membrane distillation (DCMD) was studied. The effect of feed temperature during the DCMD process was also evaluated on performance of two microfiltration membranes (0.5 µm) having different thickness (300 and 250 µm). Results showed more than 100 % increments on water vapor flux by raising feed temperature from 50 to 70 oC and feed flow rates up to 7 L·min-1. No significant effect on process performance was determined by raising permeate flow rates in the range tested. Choosing the type and concentration of antiscalants is critical during seawater desalination by DCMD. Performance of this process increased by up to 49.2 % during desalination of real seawater by adding the KMRO S-516 antiscalant designed to disperse iron, silica and calcium carbonate salts. During DCMD no important water vapor flux decay and no increase on conductivity of the distillate was observed by antiscalants’ dosage. In addition, scanning electron microscopy (SEM) from the membrane surface after DCMD desalination of seawater treated with the KMRO S-516 antiscalant confirmed the absence of scaling.

Author Biography

A.L. Peñaranda-López

Unidad de Investigación y Desarrollo en Alimentos, Tecnológico Nacional de México/IT Veracruz

Ph.D. Student


Ali, A., Macedonio, F., Drioli, E., Aljilil, S. and Alharbi, O.A. (2013). Experimental and theoretical evaluation of temperature polarization phenomenon in direct contact membrane distillation. Chemical Engineering Research and Design, 91, 1966–1977.
Adham, S., Hussain, A., Matar, J.M., Dores, R. and Janson, A. (2013), Application of membrane distillation for desalting brines from thermal desalination plants. Desalination, 314, 101–108.
Al-Obaidani, S., Curcio, E., Macedonio, F., Di Profio, G., Al-Hinai, H. and Drioli, E. (2008). Potential of membrane distillation in seawater desalination: thermal efficiency, sensitivity study, and cost estimation. Journal of Membrane Science, 323, 85–98.
Gryta, M. (2012a). Effectiveness of water desalination by membrane distillation process. Membranes 2, 415–29.
Gryta, M. (2012b). Polyphosphates used for membrane scaling inhibition during water desalination by membrane distillation. Desalination, 285, 170–176.
He, F., Sirkar, K.K. and Gilron, J. (2009). Effects of antiscalants to mitigate membrane scaling by direct contact membrane distillation. Journal of Membrane Science, 345 (1-2), 53–58.
Hou, D., Dai, G., Wang, J., Fan, H., Luan, Z. and Fu, C. (2013). Boron removal and desalination from seawater by PVDF flat-sheet membrane through direct contact membrane distillation. Desalination, 326, 115–124.
Peng, K., Arnot, T.C. and Mattia, D. (2011). A review of reverse osmosis membrane materials for desalination-development to date and future potential. Journal of Membrane Science, 370 (1-2), 1–22.
Li, B., and Sirkar, K.K. (2005). Novel membrane and device for vacuum membrane distillation based desalination process. Journal of Membrane Science, 257(1-2), 60–75.
Naidu, G., Jeong, S., Vigneswaran, S., Hwang, T., Choi, Y. and Kim, S. (2015). A review on fouling of membrane distillation. Desalination and water treatment, 57 (22), 10052–10076.
Peng Y., Ge J., Li Z. and Wang S. (2015). Effects of anti-Scaling and cleaning chemicals on membrane scale in direct contact membrane distillation process for RO brine concentrate. Separation and purification technology, 154, 22–26.
Shirazi, M., Kargari, A. and Tabatabaei, M. (2014). Evaluation of commercial PTFE membranes in desalination by direct contact membrane distillation. Chemical engineering and processing: Process intensification, 76, 16–25.
Song, L., Li, B., Sirkar, K.K. and Gilron, J.L. (2007). Direct contact membrane distillation-based desalination : novel membranes, devices, larger-scale studies and a model. Industrial & Engineering Chemistry Research, 46, 2307–2323.
Warsinger, D.M., Swaminathan, J., Guillen-Burrieza, E., Arafat, H.A. and Lienhard, J. (2015). Scaling and fouling in membrane distillation for desalination applications: a review. Desalination, 356, 294–313.
Zhang, P., Knötig, P., Gray, S., and Duke, M. (2015). Scale reduction and cleaning techniques during direct contact membrane distillation of seawater reverse osmosis brine. Desalination, 374, 20–30.
Zhu, J., Jiang, L. and Matsuura, T. (2015). New insights into the fabrication of hydrophobic/hydrophilic composite hollow fibers for direct contact membrane distillation. Chemical Engineering Science, 137, 79–90.
How to Cite
Peñaranda-López, A., & Torrestiana-Sánchez, B. (2020). Effect of antiscalants and operating variables on the performance of desalination by direct contact membrane distillation (DCMD). Revista Mexicana De Ingeniería Química, 20(1), 355-366. https://doi.org/10.24275/rmiq/Proc1457
Process engineering