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    A study on the defluoridation in water by using natural soil

    199053_199053.pdf (420.5Kb)
    Access Status
    Open access
    Authors
    Chidambaram, S.
    Manikandan, S.
    Ramanathan, A.
    Prasanna, Mohan Viswanathan
    Thivya, C.
    Karmegam, U.
    Thilagavathi, R.
    Rajkumar, K.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Chidambaram, S. and Manikandan, S. and Ramanathan, A. and Prasanna, M.V. and Thivya, C. and Karmegam, U. and Thilagavathi, R. et al. 2013. A study on the defluoridation in water by using natural soil. Applied Water Science. 3 (4): pp. 741-751.
    Source Title
    Applied Water Science
    DOI
    10.1007/s13201-013-0122-1
    ISSN
    2190-5487
    Remarks

    This article is published under the Open Access publishing model and distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/. Please refer to the licence to obtain terms for any further reuse or distribution of this work.

    URI
    http://hdl.handle.net/20.500.11937/29090
    Collection
    • Curtin Research Publications
    Abstract

    Removal of excess fluoride (F−) from the water has been attempted by several authors by using different materials both natural and artificial. The main aim of this paper was to attempt the fluoride removal by using the locally available red soil adopting column method. The red soil was mixed in different proportion with sand in order to increase the porosity and permeability property of the medium. It was optimized for 4:1 ratio of red soil to sand and it was used for the following experiment. The experiment was conducted in 11 batches for a period of about 9,213 min. Fresh standard solution of F was used in each batch, prepared from Orion 1,000 ppm solution. The samples were collected and analyzed for pH, EC (Electrical Conductivity) and HCO3. Rate of flow of water and efficiency of adsorption were calculated and compared with the fluoride removal capacities of the medium. The medium used for the fluoride removal was subjected to FTIR analysis before and after the experiment. The variation of IR spectrum before and after treatment signifies the changes in the OH bonding between Al and Fe ions present in the soil. The variation in pH decreased during the course of defluoridation. Higher F removal was noted when flow rate was lesser. An attempt on the regeneration of the fluoride adsorbed soil was also made and found to be effective.

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