POTENTIAL OF SILVER NANOPARTICLE AS METALLIC BASED PHOTOTHERMAL MEMBRANE FOR SEAWATER DESALINATION USING MEMBRANE DISTILLATION

作者：Parvin Asogan, Mohd Hafiz Dzarfan Othman, Roziana Kamaludin, Siti Maryam Jasman, Mohd Hafiz Puteh, Liew Chia Ming · 发表于：ASEAN Engineering Journal · 年份：2025 · DOI：10.11113/aej.v15.22409 · 研究领域：Membrane Separation Technologies、Solar-Powered Water Purification Methods、TiO2 Photocatalysis and Solar Cells

Membrane distillation (MD) has emerged as a promising technology for waste purification, driven by its low-energy consumption and high rejection rates. The main challenges encountered in the membrane distillation system revolve around the absence of high-performance membranes and the significant energy demand for heating the feed. In this study, we explore the incorporation of silver nanoparticles into the membrane matrix to enhance the photothermal performance during MD performance. Hollow fiber photothermal membrane was fabricated using non-solvent induced phase separation method (NIPS) by varying the loading of silver nanoparticle to 1 weight percent (wt.%), 1.5wt.% and 2wt.%. A comprehensive analysis of the membrane's photothermal properties, permeability, and selectivity was conducted through various techniques, including scanning electron microscopy (SEM), energy dispersive x-ray (EDX), water contact angle (WCA), liquid entry pressure (LEP), and Ultraviolet-Visible-Near Infrared (UV-Vis NIR). Additionally, the photothermal effectiveness on the membrane distillation performance was evaluated by comparing the water flux and rejection rate of hollow fiber membrane with different silver concentration. The results demonstrate that the integration of silver nanoparticles affects the photothermal efficiency of the membrane leading to better water vapor flux and superior pollutant rejection rates compared to conventional MD membranes. Membrane with concentration of 1.5wt% shows...