A Novel Nanohybrid Nanofibrous Adsorbent for Water Purification from Dye PollutantsReportar como inadecuado


A Novel Nanohybrid Nanofibrous Adsorbent for Water Purification from Dye Pollutants


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1

Nanochemistry and Nanoengineering, Department of Chemistry and Materials Science and Engineering, School of Chemical Technology, Aalto University, Kemistintie 1, 00076 Aalto, Finland

2

Nanochemistry and Nanoengineering, Institute for Materials Science, Faculty of Engineering, University of Kiel, Kaiserstrasse 2, 24143 Kiel, Germany

3

Nanochemistry and Nanoengineering, Helmholtz-Zentrum Geesthacht, Institute of Polymer Research, Max-Planck-Str. 1, 21502 Geesthacht, Germany

4

Department of Micro- and Nanotechnology, Technical University of Denmark, Kongens Lyngby DK-2800, Denmark





*

Authors to whom correspondence should be addressed.



Academic Editor: Armando J. D. Silvestre

Abstract In this study, we devised a novel nanofibrous adsorbent made of polyethersulfone PES for removal of methylene blue MB dye pollutant from water. The polymer shows a low isoelectric point thus at elevated pHs and, being nanofibrous, can offer a huge highly hydroxylated surface area for adsorption of cationic MB molecules. As an extra challenge, to augment the adsorbent’s properties in terms of adsorption capacity in neutral and acidic conditions and thermal stability, vanadium pentoxide V2O5 nanoparticles were added to the nanofibers. Adsorption data were analyzed according to the Freundlich adsorption model. The thermodynamic parameters verified that only at basic pH is the adsorption spontaneous and in general the process is entropy-driven and endothermic. The kinetics of the adsorption process was evaluated by the pseudo-first- and pseudo-second-order models. The latter model exhibited the highest correlation with data. In sum, the adsorbent showed a promising potential for dye removal from industrial dyeing wastewater systems, especially when envisaging their alkaline and hot conditions. View Full-Text

Keywords: nanofiber; nanocomposite; dye removal; water filtration; vanadium pentoxide V2O5 nanofiber; nanocomposite; dye removal; water filtration; vanadium pentoxide V2O5





Autor: Shahin Homaeigohar 1,* , Ahnaf Usman Zillohu 2, Ramzy Abdelaziz 1, Mehdi Keshavarz Hedayati 4 and Mady Elbahri 1,2,3,*

Fuente: http://mdpi.com/



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