Wang Li-Ying, Shi Jie, Wang Kai-Lun, Guan Yu-Qi, Guo Jin
School of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China.
Huan Jing Ke Xue. 2017 Jan 8;38(1):220-228. doi: 10.13227/j.hjkx.201603008.
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.
研究了用碳纳米管（CNTs）对中空纤维超滤膜进行改性以控制膜污染的情况。考虑到CNT改性膜的抗污染能力和CNTs层的稳定性，分析和评估了几个因素，包括乙醇分散液的浓度、CNTs的直径和CNTs的负载量。此外，还分析了CNT改性膜渗透液的溶解性有机碳（DOC）、紫外线（UV）和荧光特性。结果表明，最佳改性方法包括体积分数为50%的乙醇分散液、直径为30 - 50 nm的CNTs以及3 g·m的CNTs负载量。与原始膜相比，CNT改性膜对DOC和UV的去除率分别提高了37%和56%。同时，证明了类腐殖质和类蛋白质物质更容易被CNT改性膜去除。
