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Fabrication of magnesium bentonite hollow fibre ceramic membrane for oil-water separation
Arabian Journal of Chemistry ( IF 5.3 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.arabjc.2020.05.001
Yusuf Olabode Raji , Mohd Hafiz Dzarfan Othman , Nik Abdul Hadi Sapiaa Md Nordin , Zhong ShengTai , Jamilu Usman , Stanley Chinedu Mamah , Ahmad Fauzi Ismail , Mukhlis A. Rahman , Juhana Jaafar

Abstract In this study, low-cost magnesium bentonite (MB) was used for the fabrication of bentonite hollow fibre (BHF) membrane with high pure water flux. MB powder was initially characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), particle size distribution (PSD) analyser, Brunnauer -Emmett- Teller (BET) method, and field emission scanning electron microscope (FESEM). The BHF membrane obtained was then fabricated through dope suspension mixing, phase inversion and sintering process. The dope suspension was prepared by mixing MB, dispersant, polymer binder, and solvent using a planetary ball mill. While the spinning process was carried out at the extrusion rate of 8 mL/min, a fluid bore rate of 10 mL/min and air gap of 5 cm, and this was followed by sintering operation at 950 °C, 1000 °C, 1050 °C, and 1100 °C. The resulting BHF membrane was characterized by scanning electron microscopy (SEM) and XRD; the porosity test, water flux and oil rejection were also examined. The SEM surface morphology of BHF at sintering temperature of 950 °C showed spongy-like and nested macrovoids structure; the porosity was 49.09% with a mean pore size of 3.9 µm. The performance test on the bentonite-based hollow fibre membrane showed that the membrane prepared at 20 wt% and sintering temperature of 1000 °C, which induced high and stable permeate water flux and oil rejection of BHFC membrane were 544 L/m2 h and 97%, respectively. The results have shown that the presence of magnesium in bentonite can enhance and promote the needed support material for the fabrication of hollow fibre ceramic membrane.

中文翻译:

用于油水分离的镁膨润土中空纤维陶瓷膜的制备

摘要 本研究采用低成本镁膨润土(MB)制备高纯水通量膨润土中空纤维(BHF)膜。MB粉末最初通过X射线衍射(XRD)、X射线荧光(XRF)、粒度分布(PSD)分析仪、Brunnauer-Emmett-Teller(BET)方法和场发射扫描电子显微镜(FESEM)进行表征。然后通过掺杂悬浮液混合、相转化和烧结过程制造获得的 BHF 膜。通过使用行星式球磨机混合 MB、分散剂、聚合物粘合剂和溶剂来制备涂料悬浮液。纺丝工艺在挤出速率为 8 mL/min、流体孔径为 10 mL/min、气隙为 5 cm 下进行,然后在 950 °C、1000 °C、1050 下进行烧结操作°C 和 1100 °C。所得 BHF 膜通过扫描电子显微镜 (SEM) 和 XRD 进行表征;还检查了孔隙率测试、水通量和除油率。BHF在950°C烧结温度下的SEM表面形貌呈海绵状和嵌套大孔结构;孔隙率为 49.09%,平均孔径为 3.9 µm。对膨润土基中空纤维膜的性能测试表明,制备的膜在 20 wt% 和 1000 °C 的烧结温度下产生了高且稳定的渗透水通量和 BHFC 膜的截油率为 544 L/m2 h 和 97 %, 分别。结果表明,膨润土中镁的存在可以增强和促进制备中空纤维陶瓷膜所需的支撑材料。还检查了孔隙率测试、水通量和除油率。BHF在950°C烧结温度下的SEM表面形貌呈海绵状和嵌套大孔结构;孔隙率为 49.09%,平均孔径为 3.9 µm。对膨润土基中空纤维膜的性能测试表明,制备的膜在 20 wt% 和 1000 °C 的烧结温度下产生了高且稳定的渗透水通量和 BHFC 膜的截油率为 544 L/m2 h 和 97 %, 分别。结果表明,膨润土中镁的存在可以增强和促进制备中空纤维陶瓷膜所需的支撑材料。还检查了孔隙率测试、水通量和除油率。BHF在950°C烧结温度下的SEM表面形貌呈海绵状和嵌套的大孔结构;孔隙率为 49.09%,平均孔径为 3.9 µm。对膨润土基中空纤维膜的性能测试表明,制备的膜在 20 wt% 和 1000 ℃的烧结温度下产生了高且稳定的渗透水通量和 BHFC 膜的截油率为 544 L/m2 h 和 97 %, 分别。结果表明,膨润土中镁的存在可以增强和促进制备中空纤维陶瓷膜所需的支撑材料。BHF在950°C烧结温度下的SEM表面形貌呈海绵状和嵌套大孔结构;孔隙率为 49.09%,平均孔径为 3.9 µm。对膨润土基中空纤维膜的性能测试表明,在 20 wt% 和 1000 °C 的烧结温度下制备的膜产生了高且稳定的渗透水通量和 BHFC 膜的截油率为 544 L/m2 h 和 97 %, 分别。结果表明,膨润土中镁的存在可以增强和促进制备中空纤维陶瓷膜所需的支撑材料。BHF在950°C烧结温度下的SEM表面形貌呈海绵状和嵌套的大孔结构;孔隙率为 49.09%,平均孔径为 3.9 µm。对膨润土基中空纤维膜的性能测试表明,在 20 wt% 和 1000 °C 的烧结温度下制备的膜产生了高且稳定的渗透水通量和 BHFC 膜的截油率为 544 L/m2 h 和 97 %, 分别。结果表明,膨润土中镁的存在可以增强和促进制备中空纤维陶瓷膜所需的支撑材料。诱导高且稳定的渗透水通量和 BHFC 膜的油截留率分别为 544 L/m2 h 和 97%。结果表明,膨润土中镁的存在可以增强和促进制备中空纤维陶瓷膜所需的支撑材料。诱导高且稳定的渗透水通量和 BHFC 膜的油截留率分别为 544 L/m2 h 和 97%。结果表明,膨润土中镁的存在可以增强和促进制备中空纤维陶瓷膜所需的支撑材料。
更新日期:2020-07-01
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