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Film Distillation with a Porous Condenser for Seawater Desalination: Evaluation of Materials' Stability in the Tropical Climate of Vietnam.

Denis KalmykovTatyana AnokhinaIlya L BorisovHoang Thanh LongTrong Dan NguyenAlexey Volkov
Published in: Membranes (2023)
Desalination and treatment of wastewater has become critical for Asia regions with water scarcity. In this work, the concept of thin-film distillation equipped with a porous condenser (FDPC) was considered for its implementation in a tropical climate of Vietnam. It was found that samples with a concentration of biocide of 0.5 wt.% possessed lower biofouling, in contrast to the neat membranes. The FD-PC module was developed and water desalination experiments were conducted in Russia and Vietnam. The experiments showed high reproducibility of the results; in particular, the evaporation rate was (4.9/3.0) kg/m 2 h in Russia and (4.1/2.0) kg/m 2 h in Vietnam. In addition, as part of this work, the optimal configuration of the installation was calculated using solar collectors as the main energy source. The calculation showed high energy efficiency: specific energy consumption 0.1-0.5 kWh/m 3 .
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