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Nanomaterials 2017, 7(6), 137; doi:10.3390/nano7060137

Removal of Carmine from Aqueous Solution by Carbonated Hydroxyapatite Nanorods

School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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Academic Editor: Dror Avisar
Received: 2 April 2017 / Revised: 28 May 2017 / Accepted: 31 May 2017 / Published: 5 June 2017
(This article belongs to the Special Issue Nanomaterials for Water Treatment)
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Abstract

In this study, carbonated hydroxyapatite (CHA) nanorods were prepared by a novel hydrothermal method. The crystallinity and chemical structure of synthesized CHA nanorods was characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS), respectively. Carmine was selected as representative organic dyes to study the adsorption capacities of CHA nanorods. Mechanistic studies of carmine adsorption by CHA nanorods show that the adsorption processes both follow the pseudo-second-order kinetic model and fit the Langmuir isotherm model well. The CHA nanorods exhibited a high adsorption capacity of 85.51 mg/g for carmine at room-temperature. The experimental results prove that CHA nanorods can be promising absorbents for removing organic dye pollutants in wastewater from paper and textile plants. View Full-Text
Keywords: carbonated hydroxyapatite; nanorods; carmine; water treatment carbonated hydroxyapatite; nanorods; carmine; water treatment
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Liu, G.; Xue, C.; Zhu, P. Removal of Carmine from Aqueous Solution by Carbonated Hydroxyapatite Nanorods. Nanomaterials 2017, 7, 137.

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