Membrane and Water Treatment

  • 제13권5호
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  • Pages.235-243
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  • 2022
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  • 2005-8624(pISSN)
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  • 2092-7037(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Effective study of operating parameters on the membrane distillation processes using various materials for seawater desalination

  • Sandid, Abdelfatah Marni (Department of Mechanical Engineering, University of Ain Temouchent) ;
  • Neharia, Driss (Department of Mechanical Engineering, University of Ain Temouchent) ;
  • Nehari, Taieb (Department of Mechanical Engineering, University of Ain Temouchent)
  • 투고 : 2021.11.23
  • 심사 : 2022.09.13
  • 발행 : 2022.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

The paper presents the effect of operating temperatures and flow rates on the distillate flux that can be obtained from a hydrophobic membrane having the characteristics: pore size of 0.15 ㎛; thickness of 130 ㎛; and 85% porosity. That membrane in the present investigation could be the direct contact (DCMD) or the air-gap membrane distillation (AGMD). To model numerically the membrane distillation processes, the two-dimensional computational fluid dynamic (CFD) is used for the DCMD and AGMD cases here. In this work, DCMD and AGMD models have been validated with the experimental data using different flows (Parallel and Counter-current flows) in non-steady-state situations. A good agreement is obtained between the present results and those of the experimental data in the literature. The new approach in the present numerical modeling has allowed examining effects of the nature of materials (Polyvinylidene fluoride (PVDF) polymers, copolymers, and blends) used on thermal properties. Moreover, the effect of the area surface of the membrane (0.021 to 3.15 ㎡) is investigated to explore both the laminar and the turbulent flow regimes. The obtained results found that copolymer P(VDF-TrFE) (80/20) is more effective than the other materials of membrane distillation (MD). The mass flux and thermal efficiency reach 193.5 (g/㎡s), and 83.29 % using turbulent flow and an effective area of 3.1 ㎡, respectively. The increase of feed inlet temperatures and its flow rate, with the reduction of cold temperatures and its flow rate are very effective for increasing distillate water flow in MD applications.

키워드

과제정보

The authors acknowledge the financial supports of the FNRSDT/DGRSDT within the framework of ERANETMED3 (Project.ERANETMED3-166EXTRASEA)

참고문헌

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