Microwave-assisted preparation and physical characterisation of iron oxyhydroxides adsorbents for arsenic removal from aqueous solutions

Mengnan, L., Nikoloski, A.N., Singh, P., Parsonage, D., Das, R.P., Zhang, L., Li, W. and Pemg, J. (2012) Microwave-assisted preparation and physical characterisation of iron oxyhydroxides adsorbents for arsenic removal from aqueous solutions. In: 2nd International Conference on Chemical, Material and Metallurgical Engineering, 15 - 16 December, Kunming, China

Abstract

A novel method for preparation of iron oxyhydroxide materials, involving aqueous precipitation followed by microwave assisted aging is investigated. The produced materials are characterized by XRD, SEM EDX and TEM spectroscopy and BET analysis. The materials show physical characteristics dependent on preparation procedure. The arsenic adsorptive properties of the materials are studied by batch adsorption techniques. It is found that the rate of arsenic upload depends strongly on the degree of crystallinity of the materials. The adsorption capacity is approximately 55 mg/g. The physical characterization of the arsenic loaded adsorbents shows that the adsorption process modifies the morphology of the materials. Over 4% of arsenic atoms are incorporated into the particle matrix.

Item Type:	Conference Paper
Murdoch Affiliation:	School of Chemical and Mathematical Science
URI:	http://researchrepository.murdoch.edu.au/id/eprint/12226

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