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金属有机框架用于去除硅酸以减轻反渗透中二氧化硅垢的研究

Silicic Acid Removal by Metal-Organic Frameworks for Silica-Scale Mitigation in Reverse Osmosis.

作者信息

Guo Rui, Zhang Jun, Mufanebadza Taona Nashel, Tian Xinxia, Xie Lixin, Zhao Song

机构信息

Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.

Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China.

出版信息

Membranes (Basel). 2023 Jan 8;13(1):78. doi: 10.3390/membranes13010078.

DOI:10.3390/membranes13010078
PMID:36676885
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9866538/
Abstract

Reverse osmosis (RO) membranes are susceptible to silica scaling, resulting in irreversible degradation of membrane performance. This work covered the fabrication of MIL-101(Fe) for silicic acid adsorption to alleviate the silica scaling of RO membranes. The effect of pH, mixing time and initial concentration on silicic acid adsorption of MIL-101(Fe) was appraised in detail. The adsorption experiments demonstrated that MIL-101(Fe) possessed an excellent adsorption ability for silicic acid with the maximum adsorption capacity reaching 220.1 mgSiO·g. Data fitting confirmed the pseudo-second-order equation and Freundlich equation were consistent with silicic acid adsorption on MIL-101(Fe). Finally, a simulated anti-scaling experiment was carried out using a feed solution pretreated by MIL-101(Fe) adsorption, and the permeance exhibited a much lower decline after 24 h filtration, confirming that MIL-101(Fe) exhibits an excellent application potential for silica-scale mitigation in RO systems.

摘要

反渗透（RO）膜易受硅垢影响，导致膜性能不可逆下降。本工作涉及制备用于吸附硅酸的MIL-101（Fe），以减轻RO膜的硅垢。详细评估了pH值、混合时间和初始浓度对MIL-101（Fe）吸附硅酸的影响。吸附实验表明，MIL-101（Fe）对硅酸具有优异的吸附能力，最大吸附容量达到220.1 mgSiO₂·g⁻¹。数据拟合证实，准二级方程和Freundlich方程与硅酸在MIL-101（Fe）上的吸附情况一致。最后，使用经MIL-101（Fe）吸附预处理的进料溶液进行了模拟防垢实验，在过滤24小时后，渗透率下降幅度小得多，证实MIL-101（Fe）在RO系统中减轻硅垢方面具有优异的应用潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/d850c2fce8ee/membranes-13-00078-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/957c59aa0000/membranes-13-00078-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/1e49cbc2da6c/membranes-13-00078-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/157fa2a2246b/membranes-13-00078-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/2d5d82023694/membranes-13-00078-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/edf40cee65b6/membranes-13-00078-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/18b42f10903b/membranes-13-00078-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/29f25eef83d8/membranes-13-00078-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/692699e8954e/membranes-13-00078-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/d850c2fce8ee/membranes-13-00078-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/957c59aa0000/membranes-13-00078-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/c87b57de010f/membranes-13-00078-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/1e49cbc2da6c/membranes-13-00078-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/157fa2a2246b/membranes-13-00078-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/2d5d82023694/membranes-13-00078-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/edf40cee65b6/membranes-13-00078-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/18b42f10903b/membranes-13-00078-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/29f25eef83d8/membranes-13-00078-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/692699e8954e/membranes-13-00078-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c3a/9866538/d850c2fce8ee/membranes-13-00078-g010.jpg

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本文引用的文献

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Inorganic Scaling in Membrane Desalination: Models, Mechanisms, and Characterization Methods.膜脱盐中的无机结垢：模型、机制和特征化方法。
Environ Sci Technol. 2022 Jun 21;56(12):7484-7511. doi: 10.1021/acs.est.2c01858. Epub 2022 Jun 6.
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Selenite capture by MIL-101 (Fe) through FeOSe bonds at free coordination Fe sites.MIL-101(Fe) 通过游离配位 Fe 位点上的 FeOSe 键捕获硒酸盐。
J Hazard Mater. 2022 Feb 15;424(Pt D):127715. doi: 10.1016/j.jhazmat.2021.127715. Epub 2021 Nov 12.
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Membrane Technologies in Wastewater Treatment: A Review.
废水处理中的膜技术：综述
Membranes (Basel). 2020 Apr 30;10(5):89. doi: 10.3390/membranes10050089.
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Silica Removal Using Magnetic Iron-Aluminum Hybrid Nanomaterials: Measurements, Adsorption Mechanisms, and Implications for Silica Scaling in Reverse Osmosis.使用磁性铁铝杂化纳米材料去除硅：测量、吸附机制以及对反渗透中硅结垢的影响。
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Chem Soc Rev. 2019 May 20;48(10):2783-2828. doi: 10.1039/c8cs00829a.
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A novel magnetic MIL-101(Fe)/TiO composite for photo degradation of tetracycline under solar light.一种新型的磁性 MIL-101(Fe)/TiO 复合材料，用于太阳光下四环素的光降解。
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