Metallo-terpyridine-modified cellulose nanofiber membranes for papermaking wastewater purification
|Author:||Hassan, Mohammad1,2; Hassan, Enas1; Fadel, Shaimaa M.1;|
1Cellulose and Paper Department and Centre of Excellence for Advanced Sciences, National Research Centre, 33 El-Behouth street, Dokki, Giza 12622, Egypt
2Egypt Nanotechnology Centre, Cairo University, El-Sheikh Zaid, 6th October City 12588, Egypt
3Department of Engineering Sciences and Mathematics, Luleå University of Technology, Luleå, Sweden
4Fibre and Particle Engineering, Faculty of Technology, University of Oulu, FIN-90014, Oulu, Finland
|Online Access:||PDF Full Text (PDF, 1.7 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe201804136537
|Publish Date:|| 2018-04-13
Metallo-terpyridine compounds and polymers exhibit unique optical, electrical, magnetic and antimicrobial properties. Recently, metallo-terpyridine-modified cellulosic films with interesting porous structure, that exhibit these properties, have been prepared. Herein we report the use of Cu-terpyridine-modified oxidized cellulose nanofibers (OXCNF-Cu-Tpy) as membranes for treatment of effluents of paper mills to produce re-usable water. The OXCNF-Cu-Tpy was prepared by modification of TEMPO-oxidized CNF (OXCNF) using copper(II) complex of 4′-Chloro [2,2′:6′,2″] terpyridine. The modification was proven by elemental analysis and Fourier transform infrared spectroscopy. The prepared OXCNF-Cu-Tpy was also characterized using X-ray diffraction and transmission electron microscopy. The prepared membranes were evaluated regarding their microscopic structure using scanning electron microscopy, atomic force microscopy, contact angle measurement, water flux and rejection of sub-micron size suspended particles in papermaking wastewater effluent. Chemical modification of OXCNF with the Cu-Tpy groups significantly increased pure water flux of the membranes by about 52 and 194% depending on pressure used during filtration (0.5 and 1 MPa, respectively). Although both OXCNF and OXCNF-Cu-Tpy exhibited high efficiency in removing the sub-micron size suspended particles from wastewater effluent, OXCNF-Cu-Tpy membranes showed about 30% higher flux rate than OXCNF membranes.
Journal of inorganic and organometallic polymers and materials
|Pages:||439 - 447|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
216 Materials engineering
The authors acknowledge funding of the current research work by Swedish Research Council (Project No. 2015-05847) and the financial support under Bio4Energy‒a strategic research environment appointed by the Swedish government.
© The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.