Micropollutant removal via nanofiltration: The effect of salt concentration — Theory and experimental validation

IF 8.4 1区 工程技术 Q1 ENGINEERING, CHEMICAL Journal of Membrane Science Pub Date : 2024-09-21 DOI:10.1016/j.memsci.2024.123347
S. Castaño Osorio , I.I. Ryzhkov , E. Spruijt , A. van der Wal , P.M. Biesheuvel , J.E. Dykstra
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Abstract

Nanofiltration guarantees high water recovery and low energy consumption in removing micropollutants (MPs). In this study, we derive a concise model to describe MP removal with nanofiltration membranes. We compare the results from the model with experimental data for the removal of 7 MPs with 5 salt concentrations using the NF270 membrane. Our findings indicate that the model accurately describes MP transport through nanofiltration membranes. Furthermore, we evaluate the effect of salt concentration on MP rejection. The results show that salt concentration impacts MP rejection differently based on MP charge and size. Increasing salt concentration decreases the rejection of counter-charged MPs that are small and increases the rejection of counter-charged MP that are large.

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通过纳滤去除微污染物:盐浓度的影响--理论与实验验证
纳滤膜在去除微污染物(MPs)时可保证高水回收率和低能耗。在本研究中,我们推导出一个简明模型来描述纳滤膜去除 MP 的情况。我们将模型结果与使用 NF270 膜去除 7 种 MPs 和 5 种盐浓度的实验数据进行了比较。我们的研究结果表明,该模型准确地描述了 MP 通过纳滤膜的传输。此外,我们还评估了盐浓度对 MP 排斥的影响。结果表明,根据 MP 电荷和大小的不同,盐浓度对 MP 阻隔的影响也不同。增加盐浓度会降低对反电荷小的 MP 的排斥,增加对反电荷大的 MP 的排斥。
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来源期刊
Journal of Membrane Science
Journal of Membrane Science 工程技术-高分子科学
CiteScore
17.10
自引率
17.90%
发文量
1031
审稿时长
2.5 months
期刊介绍: The Journal of Membrane Science is a publication that focuses on membrane systems and is aimed at academic and industrial chemists, chemical engineers, materials scientists, and membranologists. It publishes original research and reviews on various aspects of membrane transport, membrane formation/structure, fouling, module/process design, and processes/applications. The journal primarily focuses on the structure, function, and performance of non-biological membranes but also includes papers that relate to biological membranes. The Journal of Membrane Science publishes Full Text Papers, State-of-the-Art Reviews, Letters to the Editor, and Perspectives.
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