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Adsorption of methylene blue from aqueous solutions by cellulose and nanofiber cellulose and its electrochemical regeneration

Mehdinejad, M.H. and Mengelizadeh, N. and Bay, A. and Pourzamani, H. and Hajizadeh, Y. and Niknam, N. and Moradi, A.H. and Hashemi, M. and Mohammadi, H. (2018) Adsorption of methylene blue from aqueous solutions by cellulose and nanofiber cellulose and its electrochemical regeneration. Desalination and Water Treatment, 110. pp. 250-263.

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Abstract

This study was conducted to evaluate the potential of the bleached bagasse, cellulose, and nanofiber cellulose to remove methylene blue (MB) from aqueous solution. The morphology of adsorbents surface and their functional groups were examined by using scanning electron microscope and Fourier transform infrared spectroscopy techniques, respectively. In a batch mode study at 25°C temperature, the effects of initial dye concentration, contact time, adsorbent dose, and solution pH on adsorption performance were investigated. The results showed that the percent of MB removal increases by increasing pH and also by increasing sorbent dosage and decreasing initial dye concentration. The adsorption kinetics and equilibrium data were in good agreement with the pseudo-second-order kinetic model and Freundlich adsorption isotherm, respectively. The removal of MB was better and more effective with cellulose and cellulose nanofiber as compared with the bleached bagasse. The regeneration of cellulose and nanofiber cellulose loaded with MB was investigated using electrochemical method under different operating conditions. The results showed that the electrochemical process efficiency is more than 60 for regeneration adsorbents. © 2018 Desalination Publications. All rights reserved.

Item Type: Article
Additional Information: cited By 0
Subjects: بهداشت عمومی WA
بهداشت عمومی WA > QC Physics
بهداشت عمومی WA > QD Chemistry
بهداشت عمومی WA > بهداشت محیط WA
مقالات نمایه شده محققین دانشگاه در سایت ,Web of Science ,Scopus
Divisions: UNSPECIFIED
Depositing User: GOUMS
Date Deposited: 24 Dec 2018 05:57
Last Modified: 24 Dec 2018 05:57
URI: http://eprints.goums.ac.ir/id/eprint/9754

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