| 碳纳米管改性PVDF中空纤维超滤膜处理二级出水抗污染性能研究 |
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| 引用本文： | 王利颖,石洁,王凯伦,关羽琪,郭瑾.碳纳米管改性PVDF中空纤维超滤膜处理二级出水抗污染性能研究[J].环境科学,2017,38(1):220-228. |
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| 作者姓名： | 王利颖 石洁 王凯伦 关羽琪 郭瑾 |
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| 作者单位： | 北京工业大学环境与能源工程学院, 北京 100124,北京工业大学环境与能源工程学院, 北京 100124,北京工业大学环境与能源工程学院, 北京 100124,北京工业大学环境与能源工程学院, 北京 100124,北京工业大学环境与能源工程学院, 北京 100124 |
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| 摘 要： | 采用碳纳米管改性PVDF中空纤维超滤膜以缓解膜污染.考察了CNTs的乙醇分散液浓度、CNTs尺寸和负载量对改性中空纤维膜的抗污染性能和改性膜内表面CNTs层稳定性的影响,分析了该改性膜对二级出水DOC、UV254的去除效果,并对改性膜出水的荧光特性进行了表征.结果表明,选用体积分数为50%的乙醇分散液、外径为30~50 nm碳纳米管、负载量为3 g·m-2时,制备的改性中空纤维膜CNTs层稳定,抗污染能力显著提高.与未改性膜相比,改性膜对二级出水DOC和UV254的去除率分别提高了37%和56%;且对二级出水中的腐殖类和蛋白质类物质去除能力明显增强.
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| 关 键 词： | 超滤膜 二级出水 膜污染 碳纳米管 膜改性 |
| 收稿时间： | 3/1/2016 12:00:00 AM |
| 修稿时间： | 2016/8/18 0:00:00 |
Effect of PVDF Hollow Fiber Ultrafiltration Membranes Modification with Carbonnanotube on Membrane Fouling Control During Ultrafiltration of Sewage Effluent |
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| WANG Li-ying,SHI Jie,WANG Kai-lun,GUAN Yu-qi and GUO Jin.Effect of PVDF Hollow Fiber Ultrafiltration Membranes Modification with Carbonnanotube on Membrane Fouling Control During Ultrafiltration of Sewage Effluent[J].Chinese Journal of Environmental Science,2017,38(1):220-228. |
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| Authors: | WANG Li-ying SHI Jie WANG Kai-lun GUAN Yu-qi and GUO Jin |
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| Institution: | School of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China,School of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China,School of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China,School of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China and School of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | 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,UV254,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-2 CNTs'' loading.Compared with the virgin membrane,the removal rates of DOC and UV254 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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| Keywords: | ultrafiltration membrane sewage effluent membrane fouling carbon nanotube membrane modification |
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