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Aerogels from quaternary ammonium-functionalized cellulose nanofibers for rapid removal of Cr(VI) from water

Authors
Journal
Carbohydrate Polymers
0144-8617
Publisher
Elsevier
Publication Date
Volume
111
Identifiers
DOI: 10.1016/j.carbpol.2014.05.020
Keywords
  • Adsorption
  • Aerogel
  • Cellulose Nanofibers
  • Heavy Metal Pollution
  • Water Treatment
Disciplines
  • Chemistry

Abstract

Abstract An efficient heavy metal adsorbent from quaternary ammonium-functionalized cellulose nanofiber aerogels was successfully developed. The highly porous aerogel could well retain its large specific surface area, which allowed rapid and effective removal of Cr(VI) from contaminated water. The aerogel adsorbent became mechanically robust after chemical crosslinking. It could be easily separated from water after adsorption without complicated centrifugation or filtration process. With only 1g of aerogel, more than 99% of Cr(VI) in 1L of 1mg/L solution could be removed in 50min. Besides, the aerogel also exhibited excellent reusability.

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