Cookies

We use cookies to ensure that we give you the best experience on our website. You can change your cookie settings at any time. Otherwise, we'll assume you're OK to continue.

Durham University

Department of Engineering

Staff Profile

Publication details for Professor Jun Jie Wu

Liu, S., Zhang, M., Fang, F., Cui, L., Wu, J.J., Field, R. & Zhang, K. (2016). Biogenic silver nanocomposite TFC nanofiltration membrane with antifouling properties. Desalination and Water Treatment 57(23): 10560-10571.

Author(s) from Durham

Abstract

Biofouling is still a major obstacle hindering wider application of thin-film composite (TFC) nanofiltration membranes in the water industry. One of the practical strategies to reduce biofouling is to develop novel antibiofouling membrane materials. Well-dispersed biogenic silver nanoparticles with a diameter of ~6 nm (Bio-Ag0-6) were first immobilized in the selective layer of TFC nanofiltration membranes. Different dosages of Bio-Ag0-6 were added in the aqueous solution during the interfacial polymerization of tetraethylenepentamine and 1,3,5-benzenetricarbonyl trichloride (TMC). Improved properties of Bio-Ag0-6 /TFC membranes were systematically investigated. When the concentration of Bio-Ag0-6 increased from 0 to 0.05 wt.% in aqueous solution, the water flux of TFC membranes increased from 7.31 to 13.76 Lm−2 h−1 while maintaining the rejection of Na2SO4 at a relatively high level. The addition of Bio-Ag0-6 also enhanced the hydrophilicity of Bio-Ag0-6/TFC membranes in comparison with the bare TFC membranes. All Bio-Ag0-6/TFC membranes exhibited an obvious antibacterial ability to inhibit the growth of Pseudomonas aeruginosa. Moreover, the Bio-Ag0-6/TFC membranes showed the property of a low silver leaching rate in both the static immersion and the filtration systems. It demonstrated that the embedded Bio-Ag0-6 in TFC membrane via interfacial polymerization improved the performance of the TFC nanofiltration membrane.