PSF/GO filtering membrane fabricated by electro-spinning applied on arsenic contaminated underground water

IF 0.9 4区 工程技术 Q3 ENGINEERING, MULTIDISCIPLINARY Journal of Engineering Research Pub Date : 2024-09-01 DOI:10.1016/j.jer.2024.01.001
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Abstract

The excess arsenic content in groundwater sources threatens more than 50 million people worldwide. Current water treatment projects use polysulfone nanofiltration membranes (NFM). However, the inherent hydrophilicity of polysulfone nanofiltration membranes causes the membrane fouling problem. This study addresses this problem by improving the hydrophilic and anti-pollution properties by doping graphene oxide (GO) particles in polysulfone(PSF) membranes. Microstructure, morphology, and hydrophilicity of PSF/GO membranes were analyzed by field emission scanning electron microscope (FEFEM), contact angle, and BET surface area analysis. X-ray diffraction (XRD), zeta potential, Energy Dispersive Spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) were used to analyze the results of the phase structure and element distribution. Permeation tests and adsorption of arsenic experiments were used to study the filtration performance of PSF/GO membranes. The results showed that PSF/GO with high porosity enlarged the specific surface area significantly. The contact angle decreased by only about 7°. Still, the water flux increased from 33.26 L/m2/h to 183.62 L/m2/h, which weakened the effect caused by membrane contamination of the arsenate solution and GO doping on the arsenate adsorption rate of PSF/GO nanofiltration membrane was discussed. The results showed that solution pH was crucial in As (V) adsorption onto PSF/GO and obtaining higher adsorption capacity at higher pH. In an alkaline environment, The adsorption rate increased from 26.71% of pure PSF fiber membrane to 79.83%.
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应用于砷污染地下水的电纺丝 PSF/GO 过滤膜
地下水源中过量的砷含量威胁着全球 5000 多万人口。目前的水处理项目使用聚砜纳滤膜(NFM)。然而,聚砜纳滤膜固有的亲水性导致了膜堵塞问题。本研究通过在聚砜(PSF)膜中掺杂氧化石墨烯(GO)颗粒来改善膜的亲水性和抗污染性,从而解决了这一问题。通过场发射扫描电子显微镜(FEFEM)、接触角和 BET 表面积分析,对 PSF/GO 膜的微观结构、形态和亲水性进行了分析。X 射线衍射 (XRD)、ZETA 电位、能量色散光谱 (EDS)、傅立叶变换红外光谱 (FTIR) 和 X 射线光电子能谱 (XPS) 用于分析相结构和元素分布的结果。利用渗透试验和砷吸附实验研究了 PSF/GO 膜的过滤性能。结果表明,高孔隙率的 PSF/GO 显著增大了比表面积。接触角仅下降了约 7°。但水通量仍从 33.26 L/m2/h 增加到 183.62 L/m2/h,削弱了砷酸盐溶液对膜污染的影响。结果表明,溶液的 pH 值对 PSF/GO 吸附 As (V) 至关重要,pH 值越高,吸附量越大。在碱性环境中,吸附率从纯 PSF 纤维膜的 26.71% 提高到 79.83%。
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来源期刊
Journal of Engineering Research
Journal of Engineering Research ENGINEERING, MULTIDISCIPLINARY-
CiteScore
1.60
自引率
10.00%
发文量
181
审稿时长
20 weeks
期刊介绍: Journal of Engineering Research (JER) is a international, peer reviewed journal which publishes full length original research papers, reviews, case studies related to all areas of Engineering such as: Civil, Mechanical, Industrial, Electrical, Computer, Chemical, Petroleum, Aerospace, Architectural, Biomedical, Coastal, Environmental, Marine & Ocean, Metallurgical & Materials, software, Surveying, Systems and Manufacturing Engineering. In particular, JER focuses on innovative approaches and methods that contribute to solving the environmental and manufacturing problems, which exist primarily in the Arabian Gulf region and the Middle East countries. Kuwait University used to publish the Journal "Kuwait Journal of Science and Engineering" (ISSN: 1024-8684), which included Science and Engineering articles since 1974. In 2011 the decision was taken to split KJSE into two independent Journals - "Journal of Engineering Research "(JER) and "Kuwait Journal of Science" (KJS).
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