陈进富1,
郭春梅1,
孔繁鑫1
1.中国石油大学（北京），重质油国家重点实验室，油气污染防治北京市重点实验室， 北京 102249
基金项目: 国家自然科学基金资助项目（51708556）
中国石油大学（北京）引进人才科研启动基金（2462015YJRC030）
Fabrication and modification of polysulfone ultrafiltration membrane and anti-oil fouling property evaluation
ZHANG Tong1,,CHEN Jinfu1,
GUO Chunmei1,
KONG Fanxin1
1.Beijing Key Laboratory of Oil & Gas Pollution Control,State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Beijing 102249, China
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摘要:采用聚砜、聚乙烯吡咯烷酮和甲基吡咯烷酮为原料, 通过相转化法制得聚砜超滤膜, 并用二氧化钛、盐酸多巴胺、硅烷偶联剂KH550和三（羟甲基）氨基甲烷盐酸盐进行表面改性。考察了不同质量分数的聚砜对膜水通量的影响及改性前后膜水通量、透过系数及接触角的变化, 同时配制500 ?mg·L-1的含油污水进行抗油污染测试。实验发现：聚砜超滤膜的水通量与压力成正比, 且随着聚砜浓度的增加, 聚砜超滤膜的纯水透过系数逐渐降低。最终选取质量分数为15%的聚砜超滤膜进行改性, 改性后的膜纯水通量较改性前下降了40.66%, 接触角从66.5°下降至35.3°, 亲水性提高了46.91%, 且抗污染性明显提高, 在含油污水测试中, 水通量增大了2.2倍, 表现出较普通聚砜超滤膜更高的水通量和稳定性。
关键词: 聚砜超滤膜/
TiO2/
表面改性/
水通量/
抗油污染
Abstract:Polysulfone ultrafiltration (UF) membrane was first fabricated by phase inversion method using polysulfone (PSF), polyvinylpyrrolidone (PVP) and methyl pyrrolidone (NMP). To optimize the fabrication condition, the influence of different mass fraction of polysulfone on the membrane properties (i.e., water flux and permeability) was measured which indicated that the optimal fabrication condition was 15% mass fraction for polysulfone. Then, the membrane surface was modified by using TiO2, dopamine hydrochloride, silane coupling agent KH550 and tri(hydroxymethyl) amino methane hydrochloride to enhance its anti-fouling properties.Compared with the pristine membrane, the pure water flux of modified membrane decreased by 40.66%, indicating the modified layer significantly increased the membrane resistance. However, the contact angle of the modified membrane decreased by 46.91% (from 66.5°to 35.3°), which showed that the hydrophilic of the membrane was significantly enhanced. By filtering the oil-containing water (500 mg·L-1), a slight decrease of water flux was observed for the modified membrane with stable water flux of 2.2 times higher than that of pristine membrane due to the hydrophilicity of the modified membrane surface.
Key words:polysulfone ultrafiltration membrane/
TiO2/
surface modification/
water flux/
anti-oil fouling.
| [1] | 刘建业.亲水化改性超滤膜的制备与机理研究[D].北京:中国矿业大学,2016 |
| [2] | 赵宏峥.聚砜超滤膜的性能优化研究[D].北京:北京交通大学,2009 10.7666/d.y1577115 |
| [3] | 刘文超,洪勇琦,周勇,等.高通量聚砜/磺化聚砜超滤膜制备研究[J].水处理技术,2014,40(3):60-63 |
| [4] | 伏圣菊.双膜法深度处理石化废水与回用中试研究[D].济南:山东建筑大学,2014 |
| [5] | 黄小川,王小仛,杨宏伟,等.原位植入TiO2纳米颗粒改性聚砜超滤膜及其抗生物污染性能研究[J]. 环境科学学报,2017,37(5):1711-1721 10.13671/j.hjkxxb.2016.0428 |
| [6] | 龚坤.多巴胺改性聚砜复合超滤膜的二次修饰及性能评价研究[D].北京:北京化工大学,2015 |
| [7] | 董蕾茜.基于原位植入法的纳米材料改性超滤膜和纳滤膜制备研究[D].北京:清华大学,2015 |
| [8] | 黄燕.聚酰胺复合正渗透膜的制备及其性能研究[D].青岛:中国海洋大学,2011 10.7666/d.y1928226 |
| [9] | SHI H,HE Y,PAN Y,et al.A modified mussel-inspired method to fabricate TiO2 decorated superhydrophilic PVDF membrane for oil/water separation[J].Journal of Membrane Science,2016,506:60-70 10.1016/j.memsci.2016.01.053 |
| [10] | BERNSMANN F,BALL V,ADDIEGO F,et al.Dopamine-melanin film deposition depends on the used oxidant and buffer solution[J].Langmuir,2011,27(6):2819-2825 10.1021/la104981s |
| [11] | LEE H,SCHERER N F,MESSERSMITH P B.Single-molecule mechanics of mussel adhesion[J].Proceedings of the National Academy of Sciences of the United States of America,2006,103(35):12999-13003 10.3410/f.1040156.489077 |
| [12] | XU L Q,YANG W J,NEOH K G,et al.Dopamine-induced reduction and functionalization of graphene oxide nanosheets[J].Macromolecules,2010,43(20):8336–8339 10.1021/ma101526k |
| [13] | SA R,YAN Y,WEI Z,et al.Surface modification of aramid fibers by bio-binspired poly(dopamine) and epoxy functionalized silane grafting[J].ACS Applied Materials & Interfaces,2014,6(23):21730-21738 10.1021/am507087p |
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聚砜超滤膜制备、改性及抗油污染性能评价
张彤1,,陈进富1,
郭春梅1,
孔繁鑫1
1.中国石油大学（北京），重质油国家重点实验室，油气污染防治北京市重点实验室， 北京 102249
基金项目: 国家自然科学基金资助项目（51708556） 中国石油大学（北京）引进人才科研启动基金（2462015YJRC030）
关键词: 聚砜超滤膜/
TiO2/
表面改性/
水通量/
抗油污染
摘要:采用聚砜、聚乙烯吡咯烷酮和甲基吡咯烷酮为原料, 通过相转化法制得聚砜超滤膜, 并用二氧化钛、盐酸多巴胺、硅烷偶联剂KH550和三（羟甲基）氨基甲烷盐酸盐进行表面改性。考察了不同质量分数的聚砜对膜水通量的影响及改性前后膜水通量、透过系数及接触角的变化, 同时配制500 ?mg·L-1的含油污水进行抗油污染测试。实验发现：聚砜超滤膜的水通量与压力成正比, 且随着聚砜浓度的增加, 聚砜超滤膜的纯水透过系数逐渐降低。最终选取质量分数为15%的聚砜超滤膜进行改性, 改性后的膜纯水通量较改性前下降了40.66%, 接触角从66.5°下降至35.3°, 亲水性提高了46.91%, 且抗污染性明显提高, 在含油污水测试中, 水通量增大了2.2倍, 表现出较普通聚砜超滤膜更高的水通量和稳定性。
English Abstract
Fabrication and modification of polysulfone ultrafiltration membrane and anti-oil fouling property evaluation
ZHANG Tong1,,CHEN Jinfu1,
GUO Chunmei1,
KONG Fanxin1
1.Beijing Key Laboratory of Oil & Gas Pollution Control,State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Beijing 102249, China
Keywords: polysulfone ultrafiltration membrane/
TiO2/
surface modification/
water flux/
anti-oil fouling
Abstract:Polysulfone ultrafiltration (UF) membrane was first fabricated by phase inversion method using polysulfone (PSF), polyvinylpyrrolidone (PVP) and methyl pyrrolidone (NMP). To optimize the fabrication condition, the influence of different mass fraction of polysulfone on the membrane properties (i.e., water flux and permeability) was measured which indicated that the optimal fabrication condition was 15% mass fraction for polysulfone. Then, the membrane surface was modified by using TiO2, dopamine hydrochloride, silane coupling agent KH550 and tri(hydroxymethyl) amino methane hydrochloride to enhance its anti-fouling properties.Compared with the pristine membrane, the pure water flux of modified membrane decreased by 40.66%, indicating the modified layer significantly increased the membrane resistance. However, the contact angle of the modified membrane decreased by 46.91% (from 66.5°to 35.3°), which showed that the hydrophilic of the membrane was significantly enhanced. By filtering the oil-containing water (500 mg·L-1), a slight decrease of water flux was observed for the modified membrane with stable water flux of 2.2 times higher than that of pristine membrane due to the hydrophilicity of the modified membrane surface.
