| Filtration Efficiency of Silicate-Modified Membranes: Measuring Water Permeability and Organic Contaminant Blockage |
| کد مقاله : 1219-ICOC |
| نویسندگان |
|
Maliheh Arhami1، نگار محمودی2، جعفر محمودی *3 1همکار پژوهشی 2دانشجوی کارشناسی دانشگاه 3عضو هیات علمی دانشگاه دامغان |
| چکیده مقاله |
| Abstract In recent years, the development of high-performance biodegradable membranes has gained significant attention as a sustainable approach for water purification [1-2]. In this study, three membranes modified with different loadings of silicate nanoparticles (M1–M3) were fabricated, and their primary performance characteristics, including pure water flux (PWF) and humic acid (HA) rejection, were systematically evaluated. The incorporation of silicate nanoparticles was intended to enhance membrane hydrophilicity, improve water transport pathways, and increase selectivity. The membranes were prepared using the phase inversion technique, and their surface morphology was characterized through SEM and AFM analyses. The PWF test was conducted at a constant pressure of 2 bar, where the PWF values obtained for membranes M1 to M3 were 367.91, 272.45, and 316.65 kg·m⁻²·h⁻¹, respectively. The observed variations in PWF can be attributed to the formation of more uniform microstructures, the creation of hydrophilic channels, and the reduced compaction of the polymeric matrix in the presence of silicate nanoparticles. HA rejection was evaluated at an initial concentration of 20 mg·L⁻¹. The rejection percentages for the modified membranes were 82.40%, 82.93%, and 83.71%, respectively. The improvement in HA removal with increasing nanoparticle content can be interpreted by stronger surface interactions, enhanced electrostatic repulsion, and better pore uniformity. Overall, membrane M3 exhibited the best performance in terms of combining relatively high water flux with superior HA rejection efficiency. In conclusion, the results of this study demonstrate that the incorporation of silicate nanoparticles is an effective strategy for improving the primary functional properties of biodegradable membranes. The enhanced hydrophilicity, microstructural uniformity, and pollutant removal efficiency indicate the strong potential of these membranes for treating natural waters containing organic contaminants. These findings provide a valuable foundation for the development of sustainable, high-performance, and environmentally friendly membrane materials for water purification applications. |
| کلیدواژه ها |
| Keywords: Biodegradable membrane, Silicate nanoparticles, Pure water flux, Humic acid |
| وضعیت: پذیرفته شده |