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Removal of Fluoride From Water Using Iron Oxide-Hydroxide Nanoparticles

Removal of Fluoride From Water Using Iron Oxide-Hydroxide Nanoparticles

Prasanta Kumar Raul, Rashmi Rekha Devi, Iohborlang M Umlong, Saumen Banerjee, Lokendra Singh, Mihir Purkait

J Nanosci Nanotechnol. 2012 May;12(5):3922-30.

PMID: 22852326

Abstract:

A novel and facile method for the synthesis of uniform stoichiometric powder form of non-magnetic iron oxide-hydroxide nanoparticles with spherical morphology and its application for defluoridation of drinking water is reported. X-ray powder diffraction analysis (XRD), BET surface area, FTIR, field emission scanning electron microscopy (FESEM) and Transmission electron microscopy (TEM) images were used to characterize nanoscale iron oxide-hydroxide. Transmission electron microscopy (TEM) image revealed the formation of iron oxide-hydroxide nanoparticles with spherical morphology. The iron oxide-hydroxide nanoparticles showed an excellent ability to remove fluoride (F-) from contaminated water over a wide range of pH. The influences of temperature, stirring speed, pH, adsorbent dose and contact time were studied. The equilibrium data were tested with various isotherm models and finally, a calculation procedure was reported for the calculation of adsorbent requirement. The fluoride adsorbed nanoparticles was regenerated upto 70% using sodium hydroxide or hydrochloric acid solution. The iron oxide-hydroxide nanoparticles can be used as an effective and replicable adsorbent media for defluoridation of water in presence of competing anions like chloride, iodate, iodide and sulphate.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS76772	Iron oxide hydroxide			Price

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