Adsorption of aromatic hydrocarbons on BTEA-bentonites
ADSORPTION SCIENCE & TECHNOLOGY, vol.22, no.2, pp.145-154, 2004 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 22 Issue: 2
- Publication Date: 2004
- Doi Number: 10.1260/026361704323150926
- Journal Name: ADSORPTION SCIENCE & TECHNOLOGY
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.145-154
- Ankara University Affiliated: Yes
Abstract
Organobentonites were synthesized using benzyltrimethylammonium bromide (BTEA) with five different exchange degrees. At low concentrations, the amounts of BTEA exchanged did not reach the value of the cation-exchange capacity (CEC) of the bentonite. To obtain full displacement, it was necessary to add an amount of BTEA four-times greater than the CEC. Synthesized organobentonites were characterized by X-ray diffraction, particle-size analysis and infrared spectroscopy. The basal spacings of the organobentonites increased slightly with increasing amounts of BTEA cations. Particle-size analyses of the original bentonite and organobentonites showed that the organobentonites contained a greater number of coarse particles than present in the original bentonite. Toluene and xylenes were used as solutes to determine the adsorption properties of the BTEA-bentonites. The 4BTEA-bentonite was evaluated as an adsorbent of water-soluble aromatic hydrocarbons including toluene and xylenes.