Modeling the Sorption of Fluoride onto Alumina
Publication: Journal of Environmental Engineering
Volume 132, Issue 2
Abstract
Fluoride is a potentially toxic ion that occurs in aquifers both naturally and as a result of anthropogenic activity. Sometimes remediation of the aquifer is required. One potential aquifer decontamination strategy is an “interception-sorption trench”—one of a number of “reactive wall” technologies. This remediation strategy relies upon natural hydraulic gradients to transport the fluoride through the aquifer to the interception-sorption trench where it partitions onto a strong sorbent—alumina. In this paper, the focus is on the development and calibration of an equilibrium-based geochemical model that will be employed in the development of a quantitative reactive transport model, which in turn will be used for the design of an interception-sorption trench. The geochemical model described here takes into account a variety of ions likely to be present in a sandy aquifer, chemical activities, and the surface charge on the alumina. The model is calibrated over a wide pH range and for high initial fluoride concentrations using experimental results obtained from batch tests. It is found that pH dependent equilibrium constants are needed to capture the behavior of the experimentally observed fluoride sorption. The presence of sodium sulfate in solution is investigated, and it is found that sodium significantly interferes with the sorption of fluoride onto alumina under alkaline conditions. The geochemical model indicates that under acidic conditions, the alumina may release potentially large and unacceptable concentrations of aluminum into the aquifer. As a way of managing this potential problem, it is proposed that aluminum concentrations in the pore fluid may be mitigated by the inclusion of tree bark within the interception-sorption trench.
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Acknowledgments
The writers are indebted to Shaun Manning for his assistance in the environmental laboratory at The University of Newcastle, and to the Australian Research Council (ARC) for financial support.
References
Alva, A. K., Edwards, D. G., Asher, C. J., and Blamey, F. P. C. (1986). “Relationships between root length of soybean and calculated activities of aluminum monomers in solution.” Soil Sci. Soc. Am. J., 50(4), 959–962.
Ball, J. W., Nordstrom, D. K., and Jenne, E. A. (1980). “Additional and revised thermochemical data for WATEQ 2, computerised model for trace and major element speciation in mineral equilibria of natural waters.” U.S. Geological Survey Water Resources Investment, Menlo Park, Calif.
Barrow, N. J. (1999). “The four laws of soil chemistry: The Leeper Lecture 1998.” Austral. J. Soil Res., 37, 787–829.
Barrow, N. J., and Ellis, A. S. (1986). “Testing a mechanistic model. III. The effects of pH on fluoride retention by a soil.” J. Soil Sci., 27, 287–293.
Bauman, E. W. (1969). “Determination of stability constants of hydrogen and aluminum fluorides with a fluoride-selective electrode.” J. Inorg. Nucl. Chem., 31, 3155–3162.
Behr, B., and Wendt, H. (1962). “Fast ion reactions in solution. I. Formation of aluminum sulfate complexes.” Z. Elektrochem., 66, 223–228.
Brady, P. V., Brady, M. V., and Borns, D. J. (1998). Natural attenuation: CERCLA, RBCA’s and the future of environmental remediation, Lewis Publishers-CRC, Boca Raton, Fla.
Cameron, R. S., Ritchie, G. S. P., and Robson, A. D. (1986). “Relative toxicities of inorganic aluminum complexes to barely.” Soil Sci. Soc. Am. J., 50(5), 1231–1236.
Carson, J. L. (2002). “Superfund or superfailure? Evaluating the effectiveness of superfund on toxic waste management.” Michigan Journal of Political Science, ⟨http://www.umich.edu/~mjps/archives/issue20/super.20.html⟩ (Dec. 17, 2002).
Choubisa, S. L. (1999). “Some observations on endemic fluorosis in Southern Rajasthan (India).” Vet. Res. Commun., 23(7), 457–465.
Church, T. W., and Nakamura, R. T. (1993). “Cleaning the mess: implementation strategies in superfund.” The Brookings Institution.
Conklin, A. R. (2002). “Soil clays.” Soil Sediment and Water, AEHS, ⟨http://www.aehsmag.com/issues/2002/june/soilclays.htm⟩ (Feb. 11, 2005).
Dames and Moore. (1992). “Environmental impact statement: Upgrade to waste storage facilities at the Alcan Kurri Kurri smelter.” Rep. No. 06439-027-70.
Dyrssen, D. (1990).
Dzombak, D. A., and Morel, F. M. M. (1990). Surface complex modeling: Hydrous ferric oxide, Wiley Interscience, New York.
Eaton, A. D., Clesceri, L. S., and Greenberg, A. E. (1995). Standard methods: For the examination of water and wastewater, 19th Ed., United Book Press, Baltimore, 5-36–5-39.
Fletcher, H. R. (2003). “Decontamination of a fluoride polluted aquifer using alumina.” PhD thesis, University of Newcastle, NSW, Australia.
Foy, C. D. (1984). “Physiological effects of hydrogen, aluminum, and manganese toxicities in acid soil.” Soil acidity and lining, 2nd Ed., F. Adams, ed., American Society of Agronomy, Madison, Wis., 57–97.
Gerald, C. F., and Wheatley, P. O. (1984). Applied numerical analysis, 3rd Ed., Addison-Wesley, Reading, Mass.
Goodman, L. S., and Gilman, A. (1995). The pharmacological basis of therapeutics: A textbook of pharmacology toxicology and therapeutics for physicians and medical students, 2nd Ed., Macmillan, New York.
Greger, J. L., and Baier, M. J. (1983). “Excretion and retention of low and moderate levels of aluminum by human subjects.” Food Chem. Toxicol., 21, 473–476.
Hao, O. J., and Huang, C. P. (1986). “Adsorption characteristics of fluoride onto hydrous alumina.” J. Environ. Eng., 112(6), 1054–1069.
Harwood, J. E. (1969). “The use of an ion-selective electrode for routine fluoride analyses on water samples.” Water Res., 3, 273.
Hitchcock, P. W., and Smith, D. W. (1998). “Implications of non-equilibria sorption on the interception-sorption trench remediation strategy.”, 84, 109–120.
Hitchcock, P. W., and Smith, D. W. (1995). “Pollution control strategy employing an interception-sorption trench.” Austral. Geomech. J., 27, 60–67.
Kau, P. M. H., Smith, D. W., and Binning, P. (1997). “Fluoride retention by kaolin clay.” J. Contam. Hydrol., 28(3), 267–288.
Konishi, S., and Miyamato, S. (1983). “Alleviation of aluminum and stimulation of pollen tube growth by fluorine.” Plant Cell Physiol., 24, 857–862.
Ku, Y., and Chiou, H-M. (2002). “The adsorption of fluoride ion from aqueous solution by activated alumina.” Water, Air, Soil Pollut., 133, 349–360.
Langmuir, D. (1997). Aqueous environmental geochemistry, Prentice-Hall, Englewood Cliffs, N.J.
Louncini, H., Addour, L., Belhocine, D., Grib, H., Nicholas, S., Bariou, B., and Mameri, N. (1997). “Study of a new technique for fluoride removal of water.” Desalination, 114(3), 241–251.
Martell, A. E., and Motekaitis, R. J. (1990). “Coordination chemistry and speciation of Al(III) in aqueous solution.” Environmental chemistry and toxicology of aluminum, 2nd Ed., Lewis Publishers, Chelsea, Mich., 3–17.
Moore, D. P. (1974). “Physiological effects of pH on roots.” The plant root and its environment, E. W. Carson, ed., University Press of Virginia, Charlottesville, Va., 135–151.
Parker, D. R., Zelazny, L. W., and Kinraide, T. B. (1990). “Chemical speciation and plant toxicity of aqueous aluminum.” Environmental chemistry and toxicology of aluminum, 2nd Ed., Lewis Publishers, Chelsea, Mich., 117–145.
Pauling, L., and Pauling, P. (1975). Chemistry, W. H. Freeman and Company, San Francisco.
Schecher, W. D., and Driscoll, C. T. (1987). “An evaluation of uncertainty associated with aluminum equilibrium calculations.” Water Resour. Res., 23(4), 525–534.
Schnoor, J. L. (1996). Environmental modeling: Fate and transport of pollutants in water, air and soil, Wiley-Interscience, New York.
Sillen, L. G., and Martell, A. E. (1964). Stability constants of metal-ion complexes, The Chemical Society, London.
Smith, D. W., and Fletcher, H. R. (2001). “Reactive walls: An overview.” Austral. Geomech. J., 37(4), 85–98.
Smith, D. W., Rowe, R. K., and Booker, J. R. (1993). “Decontamination of a polluted aquifer using an interception/sorption trench: Dispersion-advection analysis with linear hereditary sorption.” Comput. Geotech., 15, 163–186.
Sposito, G. (1989). The chemistry of soils, Oxford University Press, New York.
Stumm, W., and Morgan, J. J. (1996). Aquatic chemistry, 3rd Ed., Wiley-Interscience, New York.
U.S. Environmental Protection Agency, (USEPA). (2001). Rep. No. EPA 542-K-94-004. Washington, D.C.
Watt, J. M., and Breyer-Brandwijk, M. G. (1962). The medicinal and poisonous plants of southern and eastern Africa, 2nd Ed., E.&S. Livingstone, Ltd., Edinburgh and London.
WMC. (2000). “Alumina.” WMC Annual Rep. 2000, WMC Limited, 14-15, ⟨http://www.wmc.com.au/acrobat/00annrepar2000_4.pdf⟩ (Dec. 17, 2002).
World Health Organisation (WHO). (1989). “Aluminum.” Toxicological evaluation of certain food additives and contaminants, World Health Organisation Food Additives Series, No. 24, Cambridge University Press, Cambridge, U.K. 113–153.
World Health Organisation (WHO). (1996a). “Aluminum.” Trace elements in human nutrition and health, Geneva, Switzerland, 221–223.
World Health Organisation (WHO). (1996b). “Fluoride.” Trace elements in human nutrition and health, Geneva, Switzerland, 187–194.
World Health Organisation (WHO). (1998). Guidelines for drinking-water quality, 2nd Ed., Addendum to Vol. 1. Recommendations. Geneva, World Health Organisation, 3–4, ⟨http://www.who.int/water_sanitation_health/GDWQ/Chemicals/aluminsum.html⟩ (Sep. 25, 2002).
Wu, Y. C., and Nitya, A. (1979). “Water defluoridation with activated alumina.” J. Environ. Eng. Div. (Am. Soc. Civ. Eng.), 105(2), 357–367.
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Received: Apr 1, 2003
Accepted: Apr 12, 2005
Published online: Feb 1, 2006
Published in print: Feb 2006
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