Use of Tailored Bentonite for Selective Removal of Organic Pollutants
Publication: Journal of Environmental Engineering
Volume 115, Issue 4
Abstract
The natural cation in Wyoming bentonite is exchanged with Tetramethylammonium ions. The adsorptive properties of TMA‐bentonite increase in direct proportion to the exchange reaction below 60% of the CEC of the clay. The ability of the modified clay to remove benzene decreases at doses higher than 150% of the CEC of the clay. Adsorption isotherm constants on TMA‐bentonite are calculated from equilibrium studies for benzene, toluene, and o‐xylene. The selectivity of the TMA‐tailored bentonite follows the following order: benzene » toluene > o‐xylene. Solute equilibrium concentration is attained within fiveminute contact time. Solution pH plays a secondary role on the adsorptive nature of TMA‐bentonite.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Barrer, R. M., and Brummer, K. (1963). “Relations between partial ion exchange and interlamellar sorption in alkylammonium montmorillonites.” Trans. Farraday Soc., 59(4), 959–968.
2.
Bedding, N. D., et al. (1983). Organic contaminants in the aquatic environment II. Behaviour and fate in the hydrological cycle. The science of the total environment. Elsevier Scientific Publishing Co., Amsterdam, The Netherlands, 255.
3.
Boyd, S. A., Mortland, M. M., and Chiou, C. T. (1988). “Sorption characteristics of organic compounds on hexadecyltrimethyl‐ammonium‐smectite.” Soil Sci. Soc. of America J., 52(3), 652–657.
4.
Cadena, F., and Jeffers, S. W. (1987). “Use of tailored clays for selective adsorption of hazardous pollutants.” Proc., 42ndIndustrial WasteConf., Purdue Univ., West Lafayette, Ind., 113–119.
5.
Dixon, J. B., and Weed, J. B., eds. (1977). Minerals in soil environments. Soil Sci. Soc. of America, Madison, Wis.
6.
Dobbs, R. A., and Cohen, J. M. (1980). Carbon adsorption isotherms for toxic organics. EPA‐600/8‐80‐023, MERL, Office of Research and Development, U.S. Envir. Protection Agcy., Cincinnati, Ohio.
7.
Greenland, D. J. (1965). “Interactions between clays and organic compounds in soils, part I, mechanisms of interaction between clays and organic compounds.” Soils and Fertilizers, 28(5), 415–425.
8.
Jeffers, S. W. (1985). “Adsorption of hazardous waste with organically tailored bentonite.” Thesis presented to New Mexico State University, at Las Cruces, New Mexico, in partial fulfillment of the requirements for the degree of Master of Science.
9.
McBride, M. B., Pinnavaia, T. J., and Mortland, M. M. (1977). “Adsorption of aromatic molecules by clays in aqueous suspension.” Advances in environmental science and technology, fate of pollutants in the air and water environments, part I. John Wiley and Sons, New York, N.Y.
10.
Theng, B. K. G., Greenland, D. J., and Quirk, J. P. (1967). “Adsorption of alkylammonium ions by montmorillonite.” Clay Minerals, 7(1), 1–17.
11.
van Olphen, H. (1983). An introduction to clay colloid chemistry. Second Ed., John Wiley and Sons, New York, N.Y.
12.
Wolfe, T. A., Demirel, T., and Baumann, E. R. (1985). “Interaction of aliphatic amines with montmorillonite to enhance adsorption of organic pollutants.” Clays and Clay Minerals, 33(4), 301–311.
13.
Wolfe, T. A., Demirel, T., and Baumann, E. R. (1986). “Adsorption of organic pollutants on montmorillonite treated with amines.” J. Water Pollution Control Fed., 58(1), 68–76.
14.
Weber, W. J. (1972). Physicochemical processes for water quality control. Wiley‐Interscience, New York, N.Y.
Information & Authors
Information
Published In
Copyright
Copyright © 1989 ASCE.
History
Published online: Aug 1, 1989
Published in print: Aug 1989
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.