XUCheng-biao,WANGLu,WANGYi-shi,et al.Performance of Ultrafiltration Membranes Loaded with Ferrate Reaction Products[J].China Water & Wastewater,2025,41(21):60-67.
Performance of Ultrafiltration Membranes Loaded with Ferrate Reaction Products
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第21期
Page:
60-67
Column:
Date of publication:
2025-11-01
- Keywords:
- ferrate; reaction product; ultrafiltration membrane; membrane fouling; flux; water purification efficiency
- Abstract:
- Membrane fouling is one of the major problems in the popularization and application of ultrafiltration membranes. In this study, composite ultrafiltration membranes were prepared by loading ferrate reaction products on the surface of ultrafiltration membranes to explore their role in fouling control and pollutant interception performance.Two types of loaded membranes were prepared: ferrate self-decomposition product loaded membrane (Fe-M) and ferrate-manganese chloride reaction product loaded membrane (FeMn-M), and they were compared with the original membrane (PES). The results showed that the former loading basically did not affect the pure water flux, while the latter reduced the flux by about 20%. During ultrafiltration, Fe-M slightly alleviated the flux decline, with the normalized flux at the end of ultrafiltration increasing from 0.46 to 0.56, and significantly reduced reversible fouling. In contrast, FeMn-M had a more significant alleviating effect, with an endpoint normalized flux of 0.66, and greatly reduced irreversible fouling. The interception rate of humic acid by Fe-M could reach 85.3%, while FeMn-M further increased the interception rate to 95.1%. Fe-M formed a loose and porous loaded layer, and FeMn-M formed a denser loaded layer with small roughness. Both improved hydrophilicities, reduced the attraction between the membrane and pollutants, which was beneficial to reducing irreversible fouling and improving the interception rate. In conclusion, both loaded substances can improve the anti?fouling property and interception effect of the membrane.
Last Update:
2025-11-01