Preparation and dehumidification performance of composite membrane with PVA/gelatin–silica hybrid skin layer

Water vapor permeation and dehumidification performance of poly(vinyl alcohol)/lithium chloride composite membranes

“…These results provide a deeper insight into the effect of adding LiCl on the membrane structure and to resulting transport properties. The temperature dependence of the membrane permeability is well described via the Arrhenius-van't Hoff equation [8]:…”

“…The use of membranes for isothermal dehumidification processes has vast applications in a wide array of industries including heating, ventilation and air conditioning (HVAC) [1,2]; dehydration of flue gas [3][4][5], natural gas [6,7] and organic vapors [8,9]; drying of compressed air [10], steam recovery [9] and air treatment for packaging and processing industries.…”

“…Thus far, hydrophilic polymer [1][2][3]6,8,12,[17][18][19], ceramic materials [13] and liquid membranes [14,16,[20][21][22] have been widely used for membrane active layer. Among them, hydrophilic polymer has attracted much attention due to its high water permeability and selectivity [2,4,[6][7][8]12,[17][18][19][23][24][25][26].…”

“…Among them, hydrophilic polymer has attracted much attention due to its high water permeability and selectivity [2,4,[6][7][8]12,[17][18][19][23][24][25][26]. These are usually dense membranes for which water vapor transfer is based on solution-diffusion mechanism.…”

“…Transfer parameters such as permeance and selectivity are dictated by the membrane solubility and diffusivity properties. PVA polymer has been one of the popular choices of material for these membranes due to its hydrophilic properties, stability and ease of film formation [2,8,12,19,23,24,28]. The modification of PVA using lithium chloride to enhance water permeability has been reported [12,19].…”