The modification of hollow fiber ultrafiltration membranes with carbon nanotube (CNTs) on fouling control was investigated.Considering the antifouling ability of the CNT-modified membranes and the stability of CNTs layer,several factors were analyzed and evaluated,including the concentration of ethanol-dispersion,the diameter of CNTs,and the loading mass of CNTs.Besides,DOC,UV,and fluorescence characteristics of the permeate from the CNT-modified membrane were analyzed.The results revealed that the optimal modification method included a 50%(volume fraction) ethanol-dispersion,a 30-50 nm diameter-CNTs,and 3 g·m CNTs' loading.Compared with the virgin membrane,the removal rates of DOC and UV by the CNT-modified membrane were increased by 37% and 56%,respectively.Meanwhile,it was proved that the humic-like and protein-like materials were more easily removed by the CNT-modified membrane.
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http://dx.doi.org/10.13227/j.hjkx.201603008 | DOI Listing |
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