Laponite nanodiscs are low cost synthetic silicate clay with extreme hydrophilic behavior. Therefore, laponite can be used to enhance pervaporation membranes’ performance. Poly(vinyl alcohol), (PVA)/laponite pervaporation membranes were fabricated via simple exfoliation method of the nanoclay in the polymer solution followed by chemical crosslinking using glutaraldehyde (GA). The fabricated membranes were employed to study the pervaporation desalination performance when treating reverse osmosis (RO) concentrated brine solution. The effect of nanofiller concentration on membrane properties, as well as the water diffusion coefficient through the membrane, swelling measurements was investigated. The highest rejection of ∼99.98% was achieved using 7 wt% laponite nanocomposite membrane at 40 °C with a flux of 31.2 kg/m² h. Increasing the feed concentration resulted in a decrease in water flux, whereas the salt rejection was negligibly changed. The influence of the operating temperature and feed salt concentration on the desalination performance 7 wt% laponite nanocomposite membrane (PVA7) were obtained at different temperatures in the range between 30 °C and 70 °C and feed concentration up to 100,000 ppm the temperature profile is expressed by Arrhenius relationship.

Laponite纳米圆盘是具有极高亲水性的低成本合成硅酸盐粘土。因此，锂皂石可用于增强渗透膜的性能。通过简单剥离聚合物溶液中纳米粘土的方法，然后使用戊二醛（GA）进行化学交联，制备了聚乙烯醇（PVA）/膨润土渗透膜。制备的膜用于研究反渗透（RO）浓盐溶液时的全蒸发淡化性能。研究了纳米填料浓度对膜性能以及水在膜中的扩散系数，溶胀度的影响。使用7 wt％的皂石纳米复合膜在40°C时通量为31.2 kg / m ^2时，最高排斥率为〜99.98％H。进料浓度的增加导致水通量的降低，而除盐率的变化可忽略不计。工作温度和进料盐浓度对脱盐性能的影响在30°C至70°C的不同温度和最高温度为100,000 ppm的进料浓度下，获得了7 wt％的皂石纳米复合膜（PVA7）。用阿累尼乌斯的关系表示。