Investigation of bauxite residue (red mud) in terms of its environmental risk
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This research describes the method of neutron activation analysis (NAA) and Compton suppression for determination of some toxic elements in red mud (collected from Eti Seydisehir Aluminium Plant in Turkey). Furthermore, short-term leaching tests of elements were undertaken on red mud to evaluate in terms of the environmental impact. Morphological characterizations and qualitative element composition of red mud were also performed by SEM–EDX analysis. Fe, Al, Na, Ti and Ca contents in red mud were found significantly high. It can be concluded that some toxic elements may not easily mobile under the environmental conditions.
KeywordsRed mud Neutron activation analysis Toxic elements Leaching
The authors would like to express their gratitude to Eti Seydisehir Aluminium plant in Turkey for their co-operation in gathering samples and sharing technical data. We are grateful to the staff at Nuclear Engineering Teaching Lab for running the TRIGA reactor. The authors also thank the Scientific and Technological Research Council of Turkey (TUBITAK) for supporting the postdoctoral fellowship (BIDEP-2219) of Dr. Banu Ozden, under which her work was carried out.
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