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Analysis of tetramethylammonium–montmorillonite and retention of toluene from aqueous solution
AbstractNon-ionic organic contaminants, such as toluene, can be effectively absorbed by organo-montmorillionite. The tetramethylammonium (TMA)–montmorillonites were prepared by ion-exchange and used to evaluate toluene uptake from water. The TMA–montmorillonites were characterized by total organic carbon determinations, swelling index, X-ray diffraction, thermal analyses, and infrared spectroscopy. Toluene adsorption was measured by UV–visible spectrophotometry. The thermal stability of the TMA–montmorillonites decreased as TMA addition increased; the total mass loss decreased with increasing temperature up to 500°C. The amount of carbon retained by the TMA–montmorillonites was proportional to the area of the infrared band at 1488cm−1 (asymmetric C–H bending vibration of –CH3 group). The retention of toluene by TMA–montmorillonites increased from 0.2 to 0.22mg g−1 mainly to interlayer adsorption. The adsorption of toluene influenced the OH-stretching vibration.
Analysis of tetramethylammonium–montmorillonite and retention of toluene from aqueous solution
AbstractNon-ionic organic contaminants, such as toluene, can be effectively absorbed by organo-montmorillionite. The tetramethylammonium (TMA)–montmorillonites were prepared by ion-exchange and used to evaluate toluene uptake from water. The TMA–montmorillonites were characterized by total organic carbon determinations, swelling index, X-ray diffraction, thermal analyses, and infrared spectroscopy. Toluene adsorption was measured by UV–visible spectrophotometry. The thermal stability of the TMA–montmorillonites decreased as TMA addition increased; the total mass loss decreased with increasing temperature up to 500°C. The amount of carbon retained by the TMA–montmorillonites was proportional to the area of the infrared band at 1488cm−1 (asymmetric C–H bending vibration of –CH3 group). The retention of toluene by TMA–montmorillonites increased from 0.2 to 0.22mg g−1 mainly to interlayer adsorption. The adsorption of toluene influenced the OH-stretching vibration.
Analysis of tetramethylammonium–montmorillonite and retention of toluene from aqueous solution
Vidal, N.C. (author) / Volzone, C. (author)
Applied Clay Science ; 45 ; 227-231
2009-06-08
5 pages
Article (Journal)
Electronic Resource
English
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