DBPapers
DOI: 10.5593/SGEM2014/B51/S20.112

XRPD, FTIR INVESTIGATION AND THERMAL DECOMPOSITION KINETICS OF POLLUTED SEDIMENT FROM SLUDGE BED RUDNANY (EASTERN SLOVAKIA)

L. Findorakova, A. Zorkovska, J. Hanculak, T. Spaldon
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-17-9 / ISSN 1314-2704, June 19-25, 2014, Book 5, Vol. 1, 821-828 pp

ABSTRACT
The study area, sludge bed Rudňany (Eastern Slovakia) was formed by the silting-up of the tailings coming from the processing of complex siderite-sulphidic and baritesulphidic ores exploited in the Rudňany in 1963-2003. This area was studied by many authors from different perspectives. Our research was focused on XRPD, FTIR investigation and thermal decomposition kinetics. From particle size analysis it was found, that sediment particle size is in the range 1-30 μm, the main phases are barite, siderite and other found phases are quartz and illite. High contamination of sediment with elements (Cu, Zn, As, Pb, Cr, Ni, Cd) was confirmed by XRF spectrometry. Thermal analysis was used to study thermal behaviors of sediment. Knowledge about thermal behavior of sediment was obtained using thermal analysis. This could be interesting for the related environmental considerations. Also, information about activation energy of thermal decomposition processes could be useful for further utilization of sediment. Activation energy was calculated using Kissinger method under non-isothermal conditions.

Keywords: contaminated sediment, XRPD and FTIR-characteristics, kinetics