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| 脱乙酰基改性乙酸纤维薄膜对乳化油分离及积垢机理的探究 | |
| 引用本文： | 饶瑞晔,毛竹简,林晓榆,郭绍英,胡家朋.脱乙酰基改性乙酸纤维薄膜对乳化油分离及积垢机理的探究[J].化工进展,2021,40(10):5415-5423. |
| 作者姓名： | 饶瑞晔 毛竹简 林晓榆 郭绍英 胡家朋 |
| 作者单位： | 1.武夷学院生态与资源工程学院, 福建 武夷山 354300;2.福建省生态产业绿色技术重点实验室（武夷学院），福建 武夷山354300;3.福建省竹材工程技术研究中心(武夷学院)，福建 武夷山354300 |
| 基金项目： | 国家自然科学基金(51406141);福建省科技计划区域发展项目(2020H4026);福建省自然基金面上项目(2020J01411);福建省教育厅中青年项目(JAT200663);武夷学院启动经费(YJ202009) |
| 摘 要： | 利用静电纺丝制造乙酸纤维素膜（CA纤维膜），并利用添加TiO2及脱乙酰基（d-CA）对CA纤维膜进行改性，后续对膜过滤特性、渗透通量、油水乳化液去除效率、反洗特性及积垢机制进行讨究。结果显示，CA纤维膜通过TiO2及d-CA改性后可以提高膜的热稳定性及亲水性能，并得到稳定的纯水通量和过滤通量；最佳的比例为TiO2@d-18.5%CA纤维膜，在40kPa跨膜压差、60min的操作条件下，其纯水通量、过滤通量、1g/L油水乳化液去除效率以及反洗后通量分别为824.8L/(m2·h)、(311.3±12.5)L/(m2·h)、93.6%±1.1%、451.5L/(m2·h)；另外，添加TiO2可能导致油水乳化液在膜表面不可逆阻力比例的增加，脱乙酰基改性CA纤维膜则可以降低膜自身阻力及增加可逆阻力的比例，提高CA纤维膜在油水分离方面的潜力。 |
| 关 键 词： | 静电纺丝 乙酸纤维素薄膜 油水乳化液 脱乙酰基 |
| 收稿时间： | 2020-07-31 |
Study on the separation of emulsified oil and fouling mechanism by deacetylated cellulose scetate membrane |
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| RAU Juiyeh,MAO Zhujian,LIN Xiaoyu,GUO Shaoying,HU Jiapeng.Study on the separation of emulsified oil and fouling mechanism by deacetylated cellulose scetate membrane[J].Chemical Industry and Engineering Progress,2021,40(10):5415-5423. | |
| Authors: | RAU Juiyeh MAO Zhujian LIN Xiaoyu GUO Shaoying HU Jiapeng |
| Affiliation: | 1.Department of Ecology and Resource Engineering, Wuyi University, Wuyishan 354300, Fujian, China 2.Fujian Provincial Key Laboratory of Eco-Industrial Green Technology (Wuyi University), Wuyishan 354300, Fujian, China 3.Fujian Provincial Bamboo Engineering Technology Reserach Center (Wuyi University), Wuyishan 354300, Fujian, China |
| Abstract: | In this research, the cellulose acetate membrane (CA fiber membrane) was produced by electrostatic spinning, and the prepared CA membrane was modified by added TiO2 powder and deacetylated cellulose acetate (d-CA). After, the membrane filtration characteristics, permeation flux, removal efficiency of oil/water emulsion and membrane resistances were discussed. The results showed that the thermal stability and superhydrophilicity of the modification CA fiber membrane could be improved by TiO2 and D-CA, and the stable water and filtration flux were obtained. In operation conditions at 40kPa and 60 minutes, the TiO2@d-18.5%CA membranes were good membrane with water flux, filtration flux, removal efficiency of oil/water emulsion and backwash flux of 824.8L/(m2·h), (311.3±12.5)L/(m2·h), 93.6%±1.1% and 451.5L/(m2·h), respectively. The addition of TiO2 might lead to an increase in the irreversible resistance ratio of oil on the membrane surface. However, the d-CA modified could reduce the fiber membrane resistance and increase the proportion of reversible resistance, and improve the potential of CA fiber membrane in oil-water separation. |
| Keywords: | electrostatic spinning cellulose acetate fiber membrane oil-water emulsion deacetylated cellulose acetate (d-CA) |
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