Water Defluoridation by Lignite
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 re...
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Technoscience Publications
2007
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my.utp.eprints.22902017-01-19T08:27:05Z Water Defluoridation by Lignite Kohli, S. K.. Chaudhuri, M. TD Environmental technology. Sanitary engineering 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. Technoscience Publications 2007 Article PeerReviewed application/pdf http://eprints.utp.edu.my/2290/1/Water_Defluoridation_by_Lignite.pdf Kohli, S. K.. and Chaudhuri, M. (2007) Water Defluoridation by Lignite. Nature Environment and Pollution Technology, 6 (3). pp. 365-369. ISSN 0972-6268 http://eprints.utp.edu.my/2290/ |
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TD Environmental technology. Sanitary engineering Kohli, S. K.. Chaudhuri, M. Water Defluoridation by Lignite |
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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. |
| format |
Article |
| author |
Kohli, S. K.. Chaudhuri, M. |
| author_facet |
Kohli, S. K.. Chaudhuri, M. |
| author_sort |
Kohli, S. K.. |
| title |
Water Defluoridation by Lignite |
| title_short |
Water Defluoridation by Lignite |
| title_full |
Water Defluoridation by Lignite |
| title_fullStr |
Water Defluoridation by Lignite |
| title_full_unstemmed |
Water Defluoridation by Lignite |
| title_sort |
water defluoridation by lignite |
| publisher |
Technoscience Publications |
| publishDate |
2007 |
| url |
http://eprints.utp.edu.my/2290/1/Water_Defluoridation_by_Lignite.pdf http://eprints.utp.edu.my/2290/ |
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1738655181229260800 |
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13.209306 |