International Journal of Chemical Studies
Vol. 2, Issue 5 (2015)
Defluoridation-A review of water from aluminium and alumina based compound
Author(s): M. Khichar and S. Kumbhat
Abstract: Fluoride contamination in drinking water due to natural and anthropogenic activities has been recognized as one of the major problems worldwide imposing a serious threat to human health. Up to a small level (1–1.5 mg/L) this strengthens the enamel. Concentrations in the range of 1.5–4 mg/L result in dental fluorosis whereas with prolonged exposure at still higher fluoride concentrations (4–10 mg/L) dental fluorosis progresses to skeletal fluorosis. Several materials including aluminium salts, calcined alumina, magnesia, lime, activated carbon sulphonated carbonaceous materials and ion exchange resins have been screened for their utility in defluoridation of water. Aluminium impregnated cation exchange resin and sulphonated carbonsaceous materials prepared from coconut shell, paddy husk have been found to have a significant defluoridation capacity. Aluminium sulphate (Filter alum) solution is also found efficacious. On the basis of results extensive investigations, different researchers have developed a simple and economical domestic defluoridation processes.
This paper represents the critical review of the past work on defluoridation studies by using conventional and unconventional materials and different methodologies.
Pages: 04-11 | 1250 Views 15 Downloads
How to cite this article:
M. Khichar, S. Kumbhat. Defluoridation-A review of water from aluminium and alumina based compound. Int J Chem Stud 2015;2(5):04-11.