基于Donnan-Steric孔模型的平板商用纳滤膜性能预测

IF 0.8 4区工程技术 Q4 ENGINEERING, CHEMICAL

Membrane Water Treatment Pub Date : 2021-03-01 DOI:10.12989/MWT.2021.12.2.059

D. Qadir, R. Nasir, H. Mukhtar, F. Uddin

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引用次数: 1

摘要

研究了商用纳滤NFDK膜对氯化钠(NaCl)和氯化钙(CaCl2)单盐溶液的截留效果。结果表明，NFDK膜表面带负电荷，对钙离子(Ca2+)和钠离子(Na+)的排异率分别为93.65%和78.27%。采用基于扩展能思-普朗克方程的Donnan立体孔隙模型，结合浓度极化膜理论对两种盐水溶液的截除率进行了预测。编写了MATLAB程序进行模型计算。发现NFDK膜的真实排斥的绝对平均相对误差(% AARE)低于5%。本研究可以成功地利用所提出的方法来评估膜的表征参数，从而减少实验次数。

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Performance prediction of flat sheet commercial nanofiltration membrane using Donnan-Steric Pore Model

The rejection of sodium chloride (NaCl) and calcium chloride (CaCl2) single salt solutions were carried out for commercial nanofiltration NFDK membrane. Results showed that the NFDK membrane had a negative surface charge and had a higher observed rejection of 93.65% for calcium (Ca2+) ion and 78.27% for sodium (Na+) ions. Prediction of rejection for aqueous solutions of both salts was made using Donnan Steric Pore Model based on Extended Nernst-Planck Equation in addition to concentration polarization film theory. A MATLAB program was developed to execute the model calculations. Absolute Average Relative Error (% AARE) was found below 5% for real rejection of the NFDK membrane. This research could be used successfully to assess the membrane characterization parameter using a proposed procedure which can reduce the number of experiments.

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来源期刊

Membrane Water Treatment ENGINEERING, CHEMICAL-WATER RESOURCES

CiteScore

1.90

自引率

30.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Membrane and Water Treatment(MWT), An International Journal, aims at opening an access to the valuable source of technical information and providing an excellent publication channel for the global community of researchers in Membrane and Water Treatment related area. Specific emphasis of the journal may include but not limited to; the engineering and scientific aspects of understanding the basic mechanisms and applying membranes for water and waste water treatment, such as transport phenomena, surface characteristics, fouling, scaling, desalination, membrane bioreactors, water reuse, and system optimization.