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Modeling of water transport through nanopores of membranes in direct‐contact membrane distillation process
Author(s) -
Ghadiri Mehdi,
Fakhri Safoora,
Shirazian Saeed
Publication year - 2014
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.23601
Subject(s) - membrane distillation , materials science , membrane , mass transfer , knudsen diffusion , desalination , distillation , water transport , permeation , transport phenomena , mechanics , water flow , thermodynamics , chemical engineering , chromatography , composite material , chemistry , porosity , environmental engineering , environmental science , engineering , biochemistry , physics
In this research, computational fluid dynamic simulation of direct‐contact membrane distillation process is carried out. The process consists of a nanoporous flat‐sheet membrane as contactor, a saline liquid feed, and permeate phase. The flow pattern is considered to be counter‐current. The aim of the process is to produce pure water from saline water. Heat and mass transfer equations are derived and solved for water by finite element analysis. The simulations are then validated by comparing simulation predictions with the experimental data reported in literature. Good agreement was obtained which confirmed the validity of simulation procedure in simulation of water desalination using membrane distillation. Diffusion of water vapor through pores of membrane is simulated by combination of the Knudsen and Poiseuille flow. POLYM. ENG. SCI., 54:660–666, 2014. © 2013 Society of Plastics Engineers