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Energetic Performance and Permeate Flux Investigation of Direct‐Contact Membrane Distillation for Seawater Desalination
Chemical Engineering & Technology ( IF 2.1 ) Pub Date : 2020-09-14 , DOI: 10.1002/ceat.201900425
Ali Boubakri 1 , Sarra Elgharbi 2 , Salah Al-Tahar Bouguecha 3 , Amor Hafiane 1
Affiliation  

The performance of the direct‐contact membrane distillation (DCMD) process in desalting Mediterranean seawater was investigated. Theoretical and experimental optimization of various operating parameters was conducted. The effects of temperature differences, feed velocity, and membrane characteristics were studied. When using commercial polyvinylidene fluoride membranes, the vapor transfer throughout the membrane pores is dominated by the Knudsen‐molecular diffusion model. Maximum permeate flux was obtained when increasing temperature, feed velocity, membrane pore size, and porosity and decreasing membrane tortuosity and thickness. Thermal efficiency, gained output ratio, and specific thermal energy consumption were improved when increasing feed temperature. By application of the DCMD process to Mediterranean seawater, a high water quality was obtained.

中文翻译:

海水淡化直接接触式膜蒸馏的能量性能和渗透通量研究

研究了直接接触膜蒸馏(DCMD)工艺对地中海海水进行脱盐的性能。进行了各种工作参数的理论和实验优化。研究了温差,进料速度和膜特性的影响。当使用市售的聚偏二氟乙烯膜时,整个膜孔中的蒸汽传输受克努森分子扩散模型支配。当提高温度,进料速度,膜孔径和孔隙率并降低膜的曲折度和厚度时,可获得最大的渗透通量。提高进料温度可提高热效率,获得的输出比和比热能消耗。通过将DCMD工艺应用于地中海海水,
更新日期:2020-11-19
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