Fluoride sorption by nano-hydroxyapatite/chitin composite
CS Sundaram, N Viswanathan, S Meenakshi - Journal of hazardous …, 2009 - Elsevier
CS Sundaram, N Viswanathan, S Meenakshi
Journal of hazardous materials, 2009•ElsevierIn this study the fluoride adsorption potential of novel nano-hydroxyapatite/chitin (n-HApCh)
composite was explored. The sorbent was characterized using FTIR studies. The effects of
pH, interfering anions and contact time were studied. The sorption data obtained under
optimized conditions were subjected to Langmuir and Freundlich isotherms. Kinetic studies
indicate that the rate of sorption of fluoride on n-HApCh composite follows pseudo-second-
order and pore diffusion patterns. n-HApCh composite possesses higher defluoridation …
composite was explored. The sorbent was characterized using FTIR studies. The effects of
pH, interfering anions and contact time were studied. The sorption data obtained under
optimized conditions were subjected to Langmuir and Freundlich isotherms. Kinetic studies
indicate that the rate of sorption of fluoride on n-HApCh composite follows pseudo-second-
order and pore diffusion patterns. n-HApCh composite possesses higher defluoridation …
In this study the fluoride adsorption potential of novel nano-hydroxyapatite/chitin (n-HApCh) composite was explored. The sorbent was characterized using FTIR studies. The effects of pH, interfering anions and contact time were studied. The sorption data obtained under optimized conditions were subjected to Langmuir and Freundlich isotherms. Kinetic studies indicate that the rate of sorption of fluoride on n-HApCh composite follows pseudo-second-order and pore diffusion patterns. n-HApCh composite possesses higher defluoridation capacity (DC) of 2840mgF−kg−1 than nano-hydroxyapatite (n-HAp) which showed a DC of 1296mgF−kg−1. Field trials were conducted with the sample collected from a nearby fluoride endemic area.
Elsevier
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