Influence of Silane Treatment on CNM/PAC/PVDF Properties and Performance for Water Desalination by VMD

Membranes, Journal Year: 2025, Volume and Issue: 15(4), P. 104 - 104

Published: April 1, 2025

Vacuum membrane distillation (VMD) is a promising process for water desalination. However, it suffers some obstacles, such as fouling and wetting, due to the inadequate hydrophobicity of high vacuum pressure on permeate side. Therefore, improving surface roughness important. In this study, effect 1H,1H,2H,2H-Perfluorodecyltriethoxysilane (PFTES) morphology performance CNM/PAC/PVDF membranes at various concentrations was investigated first time. Membrane characteristics FTIR, XRD, FE-SEM, EDX, contact angle, before after modification were analyzed tested using VMD The results showed that coated with 1 wt.% PFTES had higher flux lower rejection than 2 PFTES. enhanced angle 117° increased salt above 99.9%, set 23.2 L/m2·h 35 g/L NaCl feed solution, 65 °C temperature, 0.6 L/min flow rate, 21 kPa (abs) pressure. This means PFTES-coated PVDF exhibited slightly hydrophobicity, rejection, stability over long-term operation. These outstanding indicate potential novel CNM/PAC/PVDF/PFTES saline Moreover, study presents useful guidance enhancement structures physical properties in field desalination porous membranes.

Language: Английский

A novel composite membrane for zero liquid discharge of coking wastewater in membrane distillation

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162521 - 162521

Published: April 1, 2025

Language: Английский