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Organic Solvent Forward Osmosis of Graphene Oxide-Based Membranes for Enrichment of Target Products
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-09-16 , DOI: 10.1021/acs.iecr.0c03780 Ziqiang Tong 1 , Hongyu Guo 1 , Xiufeng Liu 1 , Baoquan Zhang 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-09-16 , DOI: 10.1021/acs.iecr.0c03780 Ziqiang Tong 1 , Hongyu Guo 1 , Xiufeng Liu 1 , Baoquan Zhang 1
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Graphene oxide (GO) membranes with GO sheets of different sizes were prepared on porous nylon substrates. X-ray diffraction and Fourier transform infrared spectroscopy were employed to explore the size effect of GO sheets on the microstructure of GO membranes. Field emission scanning electron microscopy was utilized to observe the membrane morphology and thickness. The effects of GO sheets, membrane thickness, draw solution concentration, and solvent parameters on organic solvent forward osmosis (OSFO) performances were studied in methanol solution. Using pure methanol as the feed solution and 1 M citric acid methanol solution as the draw solution, a 240 nm thick highly laminated GO (HLGO) membrane achieves 4.18 L m–2 h–1 methanol flux with a moderate reverse solute flux. In the enrichment of target products via the OSFO of HLGO membranes, model solutes and atorvastatin calcium were, respectively, employed as target molecules. The solutions containing target products could be successfully concentrated with high solvent fluxes and ideal rejection rates.
中文翻译：
氧化石墨烯基膜的有机溶剂正向渗透富集目标产物
在多孔尼龙基材上制备了具有不同尺寸的GO片的氧化石墨烯（GO）膜。利用X射线衍射和傅里叶变换红外光谱研究了GO片材对GO膜微结构的尺寸效应。利用场发射扫描电子显微镜观察膜的形态和厚度。在甲醇溶液中研究了GO板，膜厚度，汲取溶液浓度和溶剂参数对有机溶剂正向渗透（OSFO）性能的影响。使用纯甲醇作为进料溶液，使用1 M柠檬酸甲醇溶液作为汲取溶液，厚度为240 nm的高度层压GO（HLGO）膜可达到4.18 L m –2 h –1甲醇助熔剂，具有中等反向溶质通量。在通过HLGO膜的OSFO富集目标产物中，模型溶质和阿托伐他汀钙分别用作目标分子。含有目标产物的溶液可以成功地以高溶剂通量和理想的废品率进行浓缩。
更新日期：2020-10-21
中文翻译：
氧化石墨烯基膜的有机溶剂正向渗透富集目标产物
在多孔尼龙基材上制备了具有不同尺寸的GO片的氧化石墨烯（GO）膜。利用X射线衍射和傅里叶变换红外光谱研究了GO片材对GO膜微结构的尺寸效应。利用场发射扫描电子显微镜观察膜的形态和厚度。在甲醇溶液中研究了GO板，膜厚度，汲取溶液浓度和溶剂参数对有机溶剂正向渗透（OSFO）性能的影响。使用纯甲醇作为进料溶液，使用1 M柠檬酸甲醇溶液作为汲取溶液，厚度为240 nm的高度层压GO（HLGO）膜可达到4.18 L m –2 h –1甲醇助熔剂，具有中等反向溶质通量。在通过HLGO膜的OSFO富集目标产物中，模型溶质和阿托伐他汀钙分别用作目标分子。含有目标产物的溶液可以成功地以高溶剂通量和理想的废品率进行浓缩。
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