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Red mud characterization using nuclear analytical techniques

Obhodas, J, Sudac, D, Matjacic, L and Valkovic, V (2011) Red mud characterization using nuclear analytical techniques

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Abstract

Red mud is a toxic waste left as a byproduct in aluminum production Bayer process. Since it contains significant concentrations of other chemical elements interesting for industry, including REE, it is also potential secondary ore source. Recent events in some countries have shown that red mud presents a serious environmental hazard if not properly stored. The subject of our study is the red mud from an ex-aluminum plant in Obrovac, Croatia, left from processing of bauxite mined during late 70's and early 80's at the eastern Adriatic coast and since than stored in open concrete basins for more than 30 years. We have used energy dispersive x-ray fluorescence analysis (both tube and radioactive source excitation), fast neutron activation analysis and passive gamma spectrometry to identify a number of elements present in the red mud, their concentration levels and radioactivity in the red mud. The high concentrations of Al, Si, Ca, Ti and Fe have been measured. Chemical elements Sc, Cr, Mn, Co, Ni, Cu, Zn, Ga, As, Se, Br, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Pb, Th and U were found in lower concentrations. No significant levels of radioactivity have been measured. © 2011 IEEE.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Authors :
AuthorsEmailORCID
Obhodas, JUNSPECIFIEDUNSPECIFIED
Sudac, DUNSPECIFIEDUNSPECIFIED
Matjacic, LUNSPECIFIEDUNSPECIFIED
Valkovic, VUNSPECIFIEDUNSPECIFIED
Date : 1 December 2011
Identification Number : https://doi.org/10.1109/ANIMMA.2011.6172957
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 15:54
Last Modified : 28 Mar 2017 15:54
URI: http://epubs.surrey.ac.uk/id/eprint/811502

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