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Water Defluoridation by Lignite

Kohli, S. K.. and Chaudhuri, M. (2007) Water Defluoridation by Lignite. Nature Environment and Pollution Technology, 6 (3). pp. 365-369. ISSN 0972-6268

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Abstract

Lignite (raw or alum-treated) was found to possess about one-half the fluoride sorption capacity of commercial grade activated alumina. No significant difference in performance of raw and alum-treated lignite in five cycles of defluoridation column test at pH 5.0 ± 0.2, using hydrochloric acid as regenerant, was observed. Infrared spectra indicated interaction of fluoride with carbonyl and aromatic ring functional groups in lignite. The results call for long-duration column tests, employing fluoride-bearing groundwater of varied characteristics and at natural pH, to confirm suitability of lignite as a low-cost medium for home water defluoridation in rural areas of developing countries.

Item Type:Article
Subjects:T Technology > TD Environmental technology. Sanitary engineering
Departments / MOR / COE:Departments > Civil Engineering
ID Code:2290
Deposited By: Prof Malay Chaudhuri
Deposited On:07 Jun 2010 06:12
Last Modified:19 Jan 2017 08:27

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