Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

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Title: Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions
Author(s): Mautner, A
Maples, HA
Kobkeatthawin, T
Kokol, V
Karim, Z
Li, K
Bismarck, A
Item Type: Journal Article
Abstract: Copper is a major problem in industrial wastewater streams, seriously affecting the quality of potential drinking water. Several approaches, including continuous membrane processes or batch-wise application of adsorbents, are in use to tackle this problem. Unfortunately, these processes suffer from their particular drawbacks, such as low permeance or disposal of saturated adsorbents. However, a combination of these processes could constitute a step towards a more efficient copper removal solution. Here, we present a nanopaper ion-exchanger prepared from cellulose nanofibrils produced from fibre sludge, a paper industry waste stream, for the efficient, continuous removal of copper from aqueous solutions. This nanopaper ion-exchanger comprises phosphorylated cellulose nanofibrils that were processed into nanopapers by papermaking. The performance of these phosphorylated nanopaper membranes was determined with respect to their rejection of copper and permeance. It was shown that this new type of nanopaper is capable of rejecting copper ions during a filtration process by adsorption. Results suggest that functional groups on the surface of the nanopapers contribute to the adsorption of copper ions to a greater extent than phosphate groups within the bulk of the nanopaper. Moreover, we demonstrated that those nanopaper ion-exchangers could be regenerated and reused and that in the presence of calcium ions, the adsorption capacity for copper was only slightly reduced.
Publication Date: 2-Jun-2016
Date of Acceptance: 18-May-2016
ISSN: 1735-2630
Publisher: Springer Verlag
Start Page: 1861
End Page: 1872
Journal / Book Title: International Journal of Environmental Science and Technology
Volume: 13
Issue: 8
Copyright Statement: © Springer Verlag 2016. The final publication is available at Springer via
Keywords: Science & Technology
Life Sciences & Biomedicine
Environmental Sciences
Environmental Sciences & Ecology
Cellulose nanofibrils
Heavy metal ion
Environmental Sciences
MD Multidisciplinary
Publication Status: Published
Appears in Collections:Faculty of Engineering
Chemical Engineering
Faculty of Natural Sciences

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