Conversion of microfiltration membrane into nanofiltration membrane by vapour phase deposition of aluminium for desalination application

Titanium dioxide nanotubes embedded mixed matrix PES membranes characterization and membrane performance

“…seen that a high-permeate flux with a low-permeate pressure and a high-feed temperature. When permeate pressure varies from 200 to 800 mbar, the permeate flux is more than doubled whereas M a n u s c r i p t 16 the specific energy requirement is nearly constant, where the energy required to maintain vacuum pressure is only a small portion of the total energy requirement (less than 2%) [48]. The theoretical predictions from VMD model agreed well with experimental measurements of permeate flux.…”

“…Temperature polarization coefficient (θ) is the ratio between the temperature close to the membrane surface calculated by simulations using equation (11) and the experimental temperature measured at the feed side [48][49]. It indicates the durable contribution of the boundary layer on the total heat transfer resistance of the VMD system.…”

Preparation and Characterization of Chitosan Thin Films on Mixed-Matrix Membranes for Complete Removal of Chromium

“…The hydrophilic nature of the prepared membranes was studied by measuring the contact angle for each membrane. Universally, the contact angle continues to decrease as the hydrophilic nature of the membranes increases . The data in Figure confirm that the hydrophilicity increases upon incorporation of TiO 2 NPs, and the contact angle decreases from 76° to 69°, mainly because TiO 2 has high affinity for water .…”

“…Universally,t he contact angle continues to decrease as the hydrophilic nature of the membranes increases. [33] The data in Figure 6c onfirm that the hydrophilicity increases upon incorporation of TiO 2 NPs, and the contact angle decreases from 768 to 698,m ainly because TiO 2 hash igha ffinity for water. [34] The contact angle of the PSf/TiO 2 /CS membrane furtherd ecreasest o6 4 8 ,a sC So nt he PSf/TiO 2 surfacei sh ighlyh ydrophilic due to the presence of hydrophilic OH and NH 2 groups; this is in agreement with results observed for PSf/CS blend membranes [35] and pHEMA andHEMA/CS membranes.…”

Ultrasound-Assisted Hydroxyapatite-Decorated Breath-Figure Polymer-Derived Ceramic Coatings for Ti6Al4V Substrates

“…It is worth mentioning that surface coatings can be formed via vapor-phase processes such as plasma spraying, hot isostatic pressing, and thermal spraying , or via imbibition-based processes such as dip coating and Langmuir–Blodgett deposition . In comparison, the BFTSA process offers additional benefits such as selectively decorating the pore structures by inorganic nanoparticles (NPs). , In recent years, this procedure has gained more interest because of either the benefits of forming hybrid polymeric–inorganic patterned films or the Pickering emulsion phenomenon.…”