%0 Journal Article
%T Thermal Regeneration Model for Spent Montmorillonite Sorbent
%A J. Kostjukovs
%A I. Sarcevi a
%A A. Acti
%J Latvian Journal of Chemistry
%D 2011
%I 
%R 10.2478/v10161-011-0065-5
%X The regeneration possibilities of montmorillonite after repeated heating in the temperature range of 300 ˇăC - 450 ˇăC were investigated. A simple technique for thermal regeneration of spent montmorillonite sorbent was developed. Powder X-ray diffraction (PXRD), thermogravimetry/differential thermal analysis (TG/DTA), wavelength dispersion X-ray fluorescence spectrometry (WDXRF) and visible light spectrometry were employed for sample characterization. Heating at 300 ˇăC allowed successful repeating of regeneration, at which the montmorillonite structure could be restored after several heating cycles. However, regeneration at about 450 ˇăC resulted only in partial regeneration of montmorillonite structure. After three regeneration cycles at 450 ˇăC the pseudo-illitization was irreversible.
%K thermal regeneration
%K montmorillonite
%K thermal analysis
%K pseudo-illitization
%U http://versita.metapress.com/content/67q6rx62655n3u22/?p=2561abee5af74243b80ebaf8dbe1c59b&pi=2