Biogenic silver nanoparticles (bio-Ag0) decrease biofouling of bio-Ag0/PES nanocomposite membranes
Biofouling is a major problem for the application of membrane technology in water and wastewater treatment.Advanced anti-biofouling membrane material is one of the practical strategies to reduce biofouling.The nanocomposite Polyethersulfone ”1” membranes were modified with different amounts of biogenic silver nanoparticles (bio-Ago) by the phase mversion method.The effects of bio-Ago content on the membrane structure and filtration performance were systematically investigated.The results demonstrated that silver-containing nanostructures were uniformly distributed on membrane surface.Bio-Ago incorporation slightly increased the hydrophilicity of the PES membrane and increased the permeate flux.The anti-bacterial and anti-biofouling performance of the bio-Ag0/PES nanocomposites membrane were tested with pure cultures (Escherichia coli and Pseudomonas aeruginosa) and a mixed culture (an activated sludge bioreactor) respectively.The bio-Ag0/PES composite membranes,even with the lowest content of biogenic silver (140 mg bio-Ago m-2),not only exhibited excellent anti-bacterial activity,but also prevented bacterial attachment to the membrane surface and decreased the biofilm formation during a 9 weeks test.
biogenic silver nanocomposite membrane flux hydrophilicity silver loss antibiofouling
Manying Zhang Kaisong Zhang Bart De Gusseme Willy Verstraete
Key Laboratory of Urban Environment and Health,Institute of Urban Environment,Chinese Academy of Sci Laboratory of Microbial Ecology and Technology (LabMET),Ghent University,Coupure Links 653,B-9000 Gh
国内会议
第十一届全国博士生学术年会专题——节能环保与污染防治技术分会场论坛
成都
英文
497-510
2013-10-01（万方平台首次上网日期，不代表论文的发表时间）