Abstract
In this study, commercial nanofiltration membranes (Toray, NF 270, Desal 5 L) were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, optical profilometry, contact angle, mechanical strength and zeta potential measurements. Filtration performance tests were conducted with distilled water, MgSO4 solution and synthetic dye solutions, respectively. Among three commercial membranes, the Toray membrane was thought to be better choice. Additional experiments were carried out for a more detailed characterization of the selected membrane. Therefore, firstly, flux and removal efficiency was monitored by using dye solutions at different pH values, and then experiments were carried out to observe the effect of different temperatures. Also, another filtration test with NaCl solution was performed for the Toray membrane. As the main purpose of this study, we aimed to establish a significant correlation between the structural properties of membranes and their performances. In light of the results obtained, it was observed that the contact angle, mechanical strength and surface roughness values of the membrane significantly affected the membrane performance. It was concluded that the most important parameter in dye removal was the zeta potential. As a result of this work, a data set of commercial membranes was created and is available to all membrane users.
Original language | English |
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Pages (from-to) | 2146-2159 |
Number of pages | 14 |
Journal | Water Science and Technology |
Volume | 83 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1 May 2021 |
Bibliographical note
Publisher Copyright:© 2021 The Authors Water Science & Technology
Funding
This work was supported by the Scientific and Technological Research Council of Turkey (TUBİTAK). Project number: 113Y371.
Funders | Funder number |
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TUBİTAK | 113Y371 |
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu |
Keywords
- Dye removal
- Membrane characterization
- Nanofiltration
- commercial membranes