TITLE:
Removal of Fluoride from Groundwater by Carbonised Punica granatum Carbon (“CPGC”) Bio-Adsorbent
AUTHORS:
Sudhanshu Kanaujia, Bharat Singh, Sanjay Kumar Singh
KEYWORDS:
Fluoride Removal, Adsorption, Punica granatum, Bio-Adsorbent
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.3 No.4,
June
5,
2015
ABSTRACT: This
study applies the development and application of low cost, Punica granatum bio-adsorbent for the removal of fluoride in
groundwater. The batch adsorption study was carried out to analyze the
defluoridation by contact time variation, adsorbent dose, adsorbate
concentration, adsorbent particle size and presence of co-anions at neutral pH.
The analysis of the isotherm
equilibrium data using the Langmuir and Freundlich equations by linear methods
showed that the data fitted better with Freundlich model (R2 >
0.980). Prepared adsorbent showed enhanced removal of fluoride
concentration by 78.1% at equilibrium contact time of 75 minutes. Carbonised Punica granatum Carbon (CPGC)
seeds showed a high affinity for fluoride ions compared with other conventional
adsorbents. Therefore, it can be considered as a potentially “good”, low-cost bio-adsorbent
for de-fluoridation of water compared to other bio-adsorbent.