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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| Format: | Article |
| Language: | English |
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Technoscience Publications
2007
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| Online Access: | http://scholars.utp.edu.my/id/eprint/2290/ http://scholars.utp.edu.my/id/eprint/2290/1/Water_Defluoridation_by_Lignite.pdf |
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| author | Kohli, S. K.. Chaudhuri, M. |
| author_facet | Kohli, S. K.. Chaudhuri, M. |
| author_sort | Kohli, S. K.. |
| building | UTP Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-13T07:27:02Z |
| format | Article |
| id | oai:scholars.utp.edu.my:2290 |
| institution | Universiti Teknologi Petronas |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-13T07:27:02Z |
| publishDate | 2007 |
| publisher | Technoscience Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:scholars.utp.edu.my:22902017-01-19T08:27:05Z http://scholars.utp.edu.my/id/eprint/2290/ 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 en http://scholars.utp.edu.my/id/eprint/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 |
| spellingShingle | TD Environmental technology. Sanitary engineering Kohli, S. K.. Chaudhuri, M. Water Defluoridation by Lignite |
| title | Water Defluoridation by Lignite |
| title_full | Water Defluoridation by Lignite |
| title_fullStr | Water Defluoridation by Lignite |
| title_full_unstemmed | Water Defluoridation by Lignite |
| title_short | Water Defluoridation by Lignite |
| title_sort | water defluoridation by lignite |
| topic | TD Environmental technology. Sanitary engineering |
| url | http://scholars.utp.edu.my/id/eprint/2290/ http://scholars.utp.edu.my/id/eprint/2290/1/Water_Defluoridation_by_Lignite.pdf |