Characterization of Cr(VI) Removal from Aqueous Solutions by Natural Hydroxyapatite from Bone Ash and Determination of Optimum Conditions

Faezeh Tadjik; Omid Mirzaee  and Homeira Ebrahimzadeh

doi:10.17485/ijst/2015/v8i13/73217

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Characterization of Cr(VI) Removal from Aqueous Solutions by Natural Hydroxyapatite from Bone Ash and Determination of Optimum Conditions

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Indian Journal of Science and Technology

DOI: 10.17485/ijst/2015/v8i13/73217

Year: 2015, Volume: 8, Issue: 13, Pages: 1-7

Original Article

Characterization of Cr(VI) Removal from Aqueous Solutions by Natural Hydroxyapatite from Bone Ash and Determination of Optimum Conditions

Faezeh Tadjik^1* , Omid Mirzaee² and Homeira Ebrahimzadeh²

¹Department of Materials Science and Engineering, School of Engineering, Semnan University, Semnan, Iran; [email protected], [email protected]

²Department of Chemistry, Shahid Beheshti University, Tehran, Iran; [email protected]

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

The aim of this paper is eliminating Cr(VI) by natural HAP. HAP is a inexpensive material which is used from bovine critical bone ash in order to remove heavy metal ions like Cr(VI). Some experiments in different pH are performed (pH = 2, 3, 7). Maximum adsorption was appeared at pH = 2, dosage = 0.3 gr, C0 = 10 mg/l. Cr(VI) removal depends on pH value and initial amount of Cr(VI) result of experiments were analyzed by Longmuir and Freundrich and kinetic model.

Keywords: Adsorption, Bone Ash, Cr Removal, Heavy Metal Ions, Kinetic Model, Natural Hydroxyapatite