Adsorption of fluoride on synthetic iron (III), zirconium(IV) and binary iron(III)-zirconium (IV) oxides: comparative assessment on pH effect and isotherm.

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dc.contributor.authorBiswas, Krishnaen_US
dc.contributor.authorBandhopadhyay, Durjoyen_US
dc.contributor.authorGhosh, Uday Chanden_US
dc.date.accessioned2008-04-20en_US
dc.date.accessioned2009-06-02T05:12:28Z
dc.date.available2008-04-20en_US
dc.date.available2009-06-02T05:12:28Z
dc.date.issued2008-04-20en_US
dc.description.abstractFluoride is an accumulative poison at high dose of intake for humans and animals. In the present study, the sorption of fluoride from aqueous solution has been investigated on synthetic hydrous ferric oxide (HFO), hydrous zirconium oxide (HZO) and hydrous zirconium(IV)-iron(III) oxide (HZFO) by batch mode experiments. Both HFO and HZFO were crystalline and HZO was amorphous in nature. The parametes studied were the effect of pH and sorption equilibriums. The results showed increase in fluoride-sorption with increasing pH from nearly 2.0 to 5.0, 4.6 and 6.8 for HFO, HZO and HZFO, respectively. Analysis of temperature dependent sorption data obtained at equilibrium solution pH 6.8 (+/- 0.2) has been described by the Langmuir, Freundlich, Temkin and Redlich-Peterson isotherm model equations. The present sorption data fit, in general, found very well with the Langmuir and Redlich-Peterson models; and the data fit for HZFO and HFO found to increase, but for HZO the data found to decrease with increasing temperature. The computed thermodynamic parameters such as deltaG0, delltaH0 and deltaS0 from the Langmuir equilibrium constant (b, L/Umg) values show that the fluoride-sorption on HZFO was more spontaneous and endothermic process compared to HFO. The deltaH0 value obtained for fluoride adsorption on HZO indicates exothermic nature.en_US
dc.description.affiliationDepartment of Chemistry, Presidency College, 86/i College Street, Kolkata-700 073, West Bengal, India.en_US
dc.identifier.citationBiswas K, Bandhopadhyay D, Ghosh UC. Adsorption of fluoride on synthetic iron (III), zirconium(IV) and binary iron(III)-zirconium (IV) oxides: comparative assessment on pH effect and isotherm. Journal of Environmental Science & Engineering. 2008 Apr; 50(2): 153-62en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/114083
dc.language.isoengen_US
dc.source.urihttps://www.neeri.res.in/jese.htmlen_US
dc.subject.meshAdsorptionen_US
dc.subject.meshAluminum Oxide --chemistryen_US
dc.subject.meshCarbon --chemistryen_US
dc.subject.meshFerric Compounds --chemistryen_US
dc.subject.meshFluorides --chemistryen_US
dc.subject.meshHydrogen-Ion Concentrationen_US
dc.subject.meshLanthanum --chemistryen_US
dc.subject.meshParticulate Matter --chemistryen_US
dc.subject.meshSilicon Dioxide --chemistryen_US
dc.subject.meshSpectroscopy, Fourier Transform Infrareden_US
dc.subject.meshTemperatureen_US
dc.subject.meshThermodynamicsen_US
dc.subject.meshWater Purification --methodsen_US
dc.subject.meshX-Ray Diffractionen_US
dc.subject.meshZirconium --chemistryen_US
dc.titleAdsorption of fluoride on synthetic iron (III), zirconium(IV) and binary iron(III)-zirconium (IV) oxides: comparative assessment on pH effect and isotherm.en_US
dc.typeComparative Studyen_US
dc.typeJournal Articleen_US
dc.typeResearch Support, Non-U.S. Gov'ten_US
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