Nano Archive

Facile synthesis of additive-assisted nano goethite powder and its application for fluoride remediation

Mohapatra, Mamata and Rout, K. and Gupta, S. K. and Singh, P. and Anand, S. and Mishra, B. K. (2010) Facile synthesis of additive-assisted nano goethite powder and its application for fluoride remediation. Journal of Nanoparticle Research, 12 (2). pp. 681-686.

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Abstract

The present article describes a novel synthesis route for nano-sized goethite (α-FeOOH) using hydrazine sulphate as an additive. The X-ray diffraction (XRD) peaks of synthesized powder matched well with those of α-FeOOH. Transmission electron microscopy (TEM) showed the particles of irregular shape in the range of 1–10 nm. Batch adsorption experiments for fluoride uptake were performed to study the influence of various experimental parameters such as contact time (10 min to 7 h), initial fluoride concentration (10–150 mg L−1), pH (2–11.6) and the presence of competing anions. The time data fitted well to pseudo-second-order kinetic model. The fluoride removal passed through broad maxima in pH ranges of 6–8. High adsorption capacity of 59 mg g−1 goethite was obtained. The isothermic data fitted well to Freundlich model. The presence of other ions namely chloride and sulphate adversely affected fluoride removal. Fluoride from contaminated water sample could be successfully brought down from 10.25 to 0.5 mg L−1.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:8198
Deposited By:JNCASR
Deposited On:10 Feb 2010 10:02
Last Modified:10 Feb 2010 10:02

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