Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 182, Issue -, Pages 1843-1851Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2021.05.132
Keywords
Aminated graphene oxide; Chitosan; Defluoridation
Funding
- Council of Scientific and Industrial Research, India (CSIR), New Delhi, India [01/ (2965) /19/EMR-II]
- Princess Nourah bint Abdulrahman University
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The AGO@CS composite beads with promising defluoridation capacity were efficiently prepared and studied, showing a possible mechanism of electrostatic attraction for fluoride removal. They are reusable and applicable in field circumstances.
The promising adsorbent like graphene oxide (GO), chitosan (CS) and amine functionalized graphene oxide (AGO) decorated chitosan (CS) namely AGO@CS composite beads was efficiently prepared for defluoridation studies. The prepared AGO@CS composite beads possess enriched defluoridation capacity (DC) of 4650 mgF(-)kg(-1). Batch method was used to optimize the maximum DC of AGO@CS composite beads. The physicochemical properties of AGO@CS composite beads were explored by numerous instrumental techniques viz., FTIR, Raman, XPS, SEM and TGA investigation. The experimental values of AGO@CS composite beads for fluoride removal at various temperature conditions were assessed with adsorption isotherms, kinetic and thermodynamic studies. The possible defluoridation mechanism of AGO@CS beads was mostly proposed that electrostatic attraction. The reusability and field investigation results of AGO@CS beads shows they are regenerable and applicable at field circumstances. (C) 2021 Elsevier B.V. All rights reserved.
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