Defluoridation from aqueous solutions by granular ferric hydroxide (GFH)

Eva Kumar, Amit Bhatnagar, Minkyu Ji, Woosik Jung, Sang Hun Lee, Sun Joon Kim, Giehyeon Lee, Hocheol Song, Jae Young Choi, Jung Seok Yang, Byong Hun Jeon

Research output: Contribution to journalArticle

218 Citations (Scopus)

Abstract

This research was undertaken to evaluate the feasibility of granular ferric hydroxide (GFH) for fluoride removal from aqueous solutions. Batch experiments were performed to study the influence of various experimental parameters such as contact time (1 min-24 h), initial fluoride concentration (1-100 mg L-1), temperature (10 and 25 °C), pH (3-12) and the presence of competing anions on the adsorption of fluoride on GFH. Kinetic data revealed that the uptake rate of fluoride was rapid in the beginning and 95% adsorption was completed within 10 min and equilibrium was achieved within 60 min. The sorption process was well explained with pseudo-first-order and pore diffusion models. The maximum adsorption capacity of GFH for fluoride removal was 7.0 mg g-1. The adsorption was found to be an endothermic process and data conform to Langmuir model. The optimum fluoride removal was observed between pH ranges of 4-8. The fluoride adsorption was decreased in the presence of phosphate followed by carbonate and sulphate. Results from this study demonstrated potential utility of GFH that could be developed into a viable technology for fluoride removal from drinking water.

Original languageEnglish
Pages (from-to)490-498
Number of pages9
JournalWater Research
Volume43
Issue number2
DOIs
Publication statusPublished - 2009 Feb 1

Fingerprint

fluoride
hydroxide
aqueous solution
Adsorption
adsorption
Potable water
Sorption
Carbonates
Phosphates
Negative ions
Kinetics
anion
sorption
drinking water
phosphate
sulfate
carbonate
kinetics
Experiments
removal

All Science Journal Classification (ASJC) codes

  • Ecological Modelling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

Cite this

Kumar, E., Bhatnagar, A., Ji, M., Jung, W., Lee, S. H., Kim, S. J., ... Jeon, B. H. (2009). Defluoridation from aqueous solutions by granular ferric hydroxide (GFH). Water Research, 43(2), 490-498. https://doi.org/10.1016/j.watres.2008.10.031
Kumar, Eva ; Bhatnagar, Amit ; Ji, Minkyu ; Jung, Woosik ; Lee, Sang Hun ; Kim, Sun Joon ; Lee, Giehyeon ; Song, Hocheol ; Choi, Jae Young ; Yang, Jung Seok ; Jeon, Byong Hun. / Defluoridation from aqueous solutions by granular ferric hydroxide (GFH). In: Water Research. 2009 ; Vol. 43, No. 2. pp. 490-498.
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Kumar, E, Bhatnagar, A, Ji, M, Jung, W, Lee, SH, Kim, SJ, Lee, G, Song, H, Choi, JY, Yang, JS & Jeon, BH 2009, 'Defluoridation from aqueous solutions by granular ferric hydroxide (GFH)', Water Research, vol. 43, no. 2, pp. 490-498. https://doi.org/10.1016/j.watres.2008.10.031

Defluoridation from aqueous solutions by granular ferric hydroxide (GFH). / Kumar, Eva; Bhatnagar, Amit; Ji, Minkyu; Jung, Woosik; Lee, Sang Hun; Kim, Sun Joon; Lee, Giehyeon; Song, Hocheol; Choi, Jae Young; Yang, Jung Seok; Jeon, Byong Hun.

In: Water Research, Vol. 43, No. 2, 01.02.2009, p. 490-498.

Research output: Contribution to journalArticle

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AU - Bhatnagar, Amit

AU - Ji, Minkyu

AU - Jung, Woosik

AU - Lee, Sang Hun

AU - Kim, Sun Joon

AU - Lee, Giehyeon

AU - Song, Hocheol

AU - Choi, Jae Young

AU - Yang, Jung Seok

AU - Jeon, Byong Hun

PY - 2009/2/1

Y1 - 2009/2/1

N2 - This research was undertaken to evaluate the feasibility of granular ferric hydroxide (GFH) for fluoride removal from aqueous solutions. Batch experiments were performed to study the influence of various experimental parameters such as contact time (1 min-24 h), initial fluoride concentration (1-100 mg L-1), temperature (10 and 25 °C), pH (3-12) and the presence of competing anions on the adsorption of fluoride on GFH. Kinetic data revealed that the uptake rate of fluoride was rapid in the beginning and 95% adsorption was completed within 10 min and equilibrium was achieved within 60 min. The sorption process was well explained with pseudo-first-order and pore diffusion models. The maximum adsorption capacity of GFH for fluoride removal was 7.0 mg g-1. The adsorption was found to be an endothermic process and data conform to Langmuir model. The optimum fluoride removal was observed between pH ranges of 4-8. The fluoride adsorption was decreased in the presence of phosphate followed by carbonate and sulphate. Results from this study demonstrated potential utility of GFH that could be developed into a viable technology for fluoride removal from drinking water.

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Kumar E, Bhatnagar A, Ji M, Jung W, Lee SH, Kim SJ et al. Defluoridation from aqueous solutions by granular ferric hydroxide (GFH). Water Research. 2009 Feb 1;43(2):490-498. https://doi.org/10.1016/j.watres.2008.10.031