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Adsorption of Methylene Blue From Aqueous Solutions by Cellulose and Nanofiber Cellulose and Its Electrochemical Regeneration Publisher



Mehdinejad MH1 ; Mengelizadeh N2, 3 ; Bay A4 ; Pourzamani H3, 5 ; Hajizadeh Y3, 5 ; Niknam N6 ; Moradi AH7 ; Hashemi M8 ; Mohammadi H3
Authors
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Authors Affiliations
  1. 1. Environmental Health Research Center, School of Public Health, Golestan University of Medical Sciences, Gorgan, Iran
  2. 2. Environment Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
  4. 4. Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  5. 5. Environment Research Center, Research Institute for Primordial Prevention of Non-communicable disease, Isfahan University of Medical Sciences, Isfahan, Iran
  6. 6. School of Management and Medical Information, Iran University of Medical Sciences, Tehran, Iran
  7. 7. Department of Occupational Health & Safety, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
  8. 8. Environmental Health Engineering, School of Health, Kerman University of Medical Sciences, Kerman, Iran

Source: Desalination and Water Treatment Published:2018


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.
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