Abstract
Sol-gel method allows production of effective adsorbent systems from fine SiO2 powder and magnetite. The protolytic exchange capacity of synthesized gels was studied within the pH range of 4–12. The main characteristics of the synthesized silica gel are: surface – 250–350 m2/g; density – 0.9 g/cm3; thermal stability – 900°C; sorbent capacity – 0.8–1.2 mmol-eq/g.
Synthesized silica gels have high sorption capacitance in relation to Pb2+ and Sr2+ ions and provide steep withdrawal of these ions from liquid environments. The isotherms of ion sorption on SiO2–Fe3O4 as sorbent display two steps of sorption. The first step is responsible for the main contribution to capacitance of sorption, the second step provides complete extraction of metal from depletion at the maiden stage of solution.
With increase of the chapter of magnetite in the SiO2–Fe3O4 sorbent, the sorption capacity of metals and depth of their withdrawal increases, indicating prospects to apply the data on such sorbents in geochemical research.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
E.N. Poddenezhny, A.A. Boiko, Sol - Gel synthesizing of the Optical Silica Glass, Gomel, 130-133 (2002).
A.P. Shuchko, V.M. Radovenchic, Optimum condition peelings of magnetite in processes clearing of water, Chemistry and Technology of Water, 16, 180-183 (1994).
A.V. Sandullyc, V.M. Karhov, A.P. Veshensky, On a ability is magneto sorption of radio-activity removal from radioactive waters, Energy and Electrophysics, 41-42 (1989).
K.C. Chen, T. Tsuchiya, J.D. Mackenzie, Sol-gel processing of silica, Journal of Non- Crystalline Solids, 81, 227-327 (1986).
L.L. Hehch, J.K. West, The sol-gel process, Chemistry Review, 90, 33-72 (1990).
A.B. Yroslavcev, V.V. Nikonenko, N.A. Sancevich, Ionic transportation in membranes and ion exchanges materials, Chemistry’s Results, 72, 438-446 (2003).
S.A. Mechcovsky, O.V. Bochco, N.A. Sancevich, Accumulative indicator systems on the basis of highly dispersive sorption active materials, Sviridov Conf. Article Col. 74, 41-62 (2005).
Y. Incedy, Application of Complexes in Analytical Chemistry. M.: Mir., p. 376 (1979).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2008 Springer Science + Business Media B.V
About this paper
Cite this paper
Semchenko, A.V., Gaishun, V.E., Sidsky, V.V., Stankevich, N.A., Baghko, O.V., Mechkovsky, S.S. (2008). Properties of Magnetic Silica Gel for Environment Monitoring. In: Innocenzi, P., Zub, Y.L., Kessler, V.G. (eds) Sol-Gel Methods for Materials Processing. NATO Science for Peace and Security Series C: Environmental Security. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-8514-7_35
Download citation
DOI: https://doi.org/10.1007/978-1-4020-8514-7_35
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-8522-2
Online ISBN: 978-1-4020-8514-7
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)