The Effect of Operating Parameters on Total Cross-membrane Flux in a PVDF Flat Sheet Membrane

Authors

  • Hafsa Bekraoui
    Affiliation
    Laboratoire Structures Intelligentes, University of Ain Temouchent, P. O. B. 284, 46000 Ain Temouchent, Algeria
    Department of Mechanical Engineering, Faculty of Science and Technology, University of Ain Temouchent, P. O. B. 284, 46000 Ain Temouchent, Algeria
  • Driss Nehari
    Affiliation
    Department of Mechanical Engineering, Faculty of Science and Technology, University of Ain Temouchent, P. O. B. 284, 46000 Ain Temouchent, Algeria
  • Touhami Baki
    Affiliation
    Department of Mechanical Engineering, Faculty of Mechanical Engineering, University of Science and Technology of Oran Mohamed-Boudiaf, P. O. B. 1505, Bir El Djir 31000, Oran, Algeria
  • Mouad Bousmaha
    Affiliation
    Department of Mechanical Engineering, Faculty of Science and Technology, University of Ain Temouchent, P. O. B. 284, 46000 Ain Temouchent, Algeria
https://doi.org/10.3311/PPch.21815

Abstract

Membrane distillation (MD) is an emerging thermal membrane technology that involves water vapor driven by a vapor pressure gradient over a hydrophobic membrane. MD faces several challenges, one of which is the flux of water vapor. The total cross-membrane flux in membrane distillation was investigated in this paper using the co-current PVDF flat sheet for direct contact. membrane distillation applications. The goal of this research is to improve total cross-membrane flux. The effect of various operational parameters is studied, including feed inlet temperature (333.15–358.15 K), feed flow rate (1–2.5 kg/s), permeate inlet temperature (288.15–313.15 K), and feed inlet NaCl concentration (0.035 to 0.485 kg/kg). To acquire a good value of total cross-membrane flux, their interactions with the total cross-membrane flux are studied in this work. The obtained results were computed during MATLAB-Simulations under several scenarios adopting the Trial-&-Error approach. This last inputs various parameters' values and thus draws the required curves to be discussed and analyzed. The results indicated that the PVDF flat sheet membranes provide a significantly higher total cross-membrane flux at higher feed input temperatures, producing a 73.2075 kg/(m2 h) at a feed inlet temperature of 358.15 K, a permeate inlet temperature of 293.15 K, and a flow rate of 2.5 kg/s, with a feed inlet NaCl concentration of 0.035 kg/kg. Feed inlet temperature significantly affected the total flux through the membrane; however, flow rate, permeate inlet temperature, and feed inlet NaCl concentration had a less significant effect.

Keywords:

desalination process, permeate flux, direct contact membrane distillation (DCMD), operating parameters

Citation data from Crossref and Scopus

Published Online

2023-08-28

How to Cite

Bekraoui, H., Nehari, D., Baki, T., Bousmaha, M. “The Effect of Operating Parameters on Total Cross-membrane Flux in a PVDF Flat Sheet Membrane”, Periodica Polytechnica Chemical Engineering, 67(3), pp. 490–503, 2023. https://doi.org/10.3311/PPch.21815

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Articles