Characteristics analysis of cross flow vacuum membrane distillation process

Simultaneous recovery and crystallization control of saline organic wastewater by membrane distillation crystallization

“…. A , B , and C are the constants that listed in Table for H 2 O and EG, respectively; T is solution temperature (°C); is the activity coefficient of i component in feed solution, which can be obtained by extended UNIQUAC model; x i is the molar ratio of i component in the bulk solution and y i is the molar ratio of i component on the permeate side that can be determined in the experiment. P f and P p are the pressure on the feed side and the permeate side, respectively.…”

Numerical Investigations of Coupling a Vacuum Membrane Desalination System with a Salt Gradient Solar Pond

“…The vapor water molecule was transported through the membrane pores from the higher pressure to lower pressure side. Generally in the VMD the vapor water molecules transfer through the membrane pores is given by the mechanism of Knudsen diffusion where the mean free path of the molecules is very large relative to the average pore [9,[25][26][27]. Indeed in VMD, the mean free path of water can reach relatively high values.…”

“…The coefficient of the membrane permeability or the Knudsen permeability K m can be related to the membrane structural properties such and the membrane interface temperature (T i ) [9,25,26].…”