Effective adsorption of malachite green using magnetic barium phosphate composite from aqueous solution.

Author(s) Zhang, F.; Wei, Z.; Zhang, W.; Cui, H.
Journal Spectrochim Acta A Mol Biomol Spectrosc
Date Published 2017 Jul 05
Abstract

Magnetic Ba3(PO4)2/Fe3O4-nanoparticle (called BPFN) was prepared, characterized, and developed as a low-cost adsorbent for malachite green (MG) from aqueous solution. Factors such as adsorption temperature, pH of solution, dosage of adsorbent, adsorption kinetics and isotherms were investigated. The maximum adsorption capacity obtained in this work was 1639mgg(-1) at 45°C and pH6. The adsorption process fitted the pseudo-first-order kinetic model and Langmuir isotherm model. Evidences from zeta potential, Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS) data revealed that the adsorption process was driven by electrostatic attraction, the interaction between Lewis base N(CH3)2 in MG and Lewis acid Ba sites of BPFN. In addition, the BPFN could be easily regenerated by a magnet and the adsorption capacity maintained at 70% after five cycles. The present study suggests that the BPFN had high potential of removing MG from wastewater.

DOI 10.1016/j.saa.2017.03.066
ISSN 1873-3557
Citation Zhang F, Wei Z, Zhang W, Cui H. Effective adsorption of malachite green using magnetic barium phosphate composite from aqueous solution. Spectrochim Acta A Mol Biomol Spectrosc. 2017;182:116-122.

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