Regeneration of organovermiculite with thermal treatment after sorption processes. (2018)

• Record Type: Journal Article
• Authors: Mikeska, Marcel; Bureček, Adam; Dutko, Ondřej; Simha Martynková, Gražyna; Vallová, Silvie; Hružík, Lumír; Plachá, Daniela
• Is Part Of: Materials today. Volume 5(2018)Supplement 1
• Page Start: S29
• Page End: S37
• Publication Date: 2018
• Subjects: Vermiculite -- Organoclay -- Organic compounds -- Sorption -- Thermal treatment -- Regeneration -- Decontamination -- Disposal; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2018.05.054
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Vermiculite is a well-known natural material which can be used as sorption material. It is very efficient sorbent of non-polar organic compounds in its organically modified form. Many research works are aimed to organically modified vermiculites and their properties. However, only few studies are focused on their treatment after utilization. One of the options is thermal treatment. This work is aimed to study: 1) an influence of different temperatures on regeneration of organovermiculite used as a sorbent and 2) structural changes after thermal treatment. The prepared and tested samples were investigated using X-ray diffraction method, FT-infrared spectrometry and phase carbon analysis. Both series of the organovermiculites treated at 100 and 200 °C in the repeated cycle of thermal treatment showed over 90% sorption efficiency of original HDP-vermiculite.