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Controllable Synthesis of FeO-wollastonite Adsorbents for Efficient Heavy Metal Ions/oxyanions Removal

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Publisher Springer
Date 2019 Mar 9
PMID 30847816
Citations 1
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Abstract

Iron oxide, in the form of magnetite (MG)-functionalized porous wollastonite (WL), was used as an adsorbent for heavy metal ions (cadmium and nickel) and oxyanions (chromate and phosphate) removal from water. The porous WL was synthesized from calcium carbonate and siloxane by controlled sintering process using low molecular weight submicrosized poly(methyl methacrylate) as a pore-forming agent. The precipitation of MG nanoparticles was carried out directly by a polyol-medium solvothermal method or via branched amino/carboxylic acid cross-linker by solvent/nonsolvent method producing WL/MG and WL-γ-APS/MG adsorbents, respectively. The structure/properties of MG functionalized WL was confirmed by applying FTIR, Raman, XRD, Mössbauer, and SEM analysis. Higher adsorption capacities of 73.126, 66.144, 64.168, and 63.456 mg g for WL-γ-APS/MG in relation to WL/MG of 55.450, 52.019, 48.132, and 47.382 mg g for Cd, Ni, phosphate, and chromate, respectively, were obtained using nonlinear Langmuir model fitting. Adsorption phenomena were analyzed using monolayer statistical physics model for single adsorption with one energy. Kinetic study showed exceptionally higher pseudo-second-order rate constants for WL-γ-APS/MG, e.g., 1.17-13.4 times, with respect to WL/MG indicating importance of both WL surface modification and controllable precipitation of MG on WL-γ-APS.

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References
1.
Karthikeyan T, Rajgopal S, Miranda L . Chromium(VI) adsorption from aqueous solution by Hevea Brasilinesis sawdust activated carbon. J Hazard Mater. 2005; 124(1-3):192-9. DOI: 10.1016/j.jhazmat.2005.05.003. View

2.
Chen Q, Hills C, Yuan M, Liu H, Tyrer M . Characterization of carbonated tricalcium silicate and its sorption capacity for heavy metals: a micron-scale composite adsorbent of active silicate gel and calcite. J Hazard Mater. 2007; 153(1-2):775-83. DOI: 10.1016/j.jhazmat.2007.09.023. View

3.
Osticioli I, Mendes N, Nevin A, Gil F, Becucci M, Castellucci E . Analysis of natural and artificial ultramarine blue pigments using laser induced breakdown and pulsed Raman spectroscopy, statistical analysis and light microscopy. Spectrochim Acta A Mol Biomol Spectrosc. 2009; 73(3):525-31. DOI: 10.1016/j.saa.2008.11.028. View

4.
Wang Y, Li B, Zhou Y, Jia D . In Situ Mineralization of Magnetite Nanoparticles in Chitosan Hydrogel. Nanoscale Res Lett. 2010; 4(9):1041-1046. PMC: 2894183. DOI: 10.1007/s11671-009-9355-1. View

5.
Razzaque M . Phosphate toxicity: new insights into an old problem. Clin Sci (Lond). 2010; 120(3):91-7. PMC: 3120105. DOI: 10.1042/CS20100377. View