Abstract
The adsorption of anionic surfactants on carbon adsorbents modified with water-soluble derivatives of natural polymers, cellulose and chitin, is considered with sodium dodecylsulfate taken as an example. It is shown that such modification leads to changes in the adsorption structural characteristics and the particle size distribution of carbon-water suspensions of the original adsorbent, and to the emergence of new functional groups on its surface that are able to interact selectively with adsorbate molecules. It is assumed that adsorption of anionic surfactant on carbon adsorbents under equilibrium conditions proceeds via stepwise filling of the carbon’s porous structure: we first observe volume filling of micropores according to their sizes, and then the formation of a surfactant’s monolayer in mesopores and on the outer surface of the adsorbate. It is established by thermal analysis that the thermal stability of carbon adsorbents is enhanced through the preferential localization of anionic surfactants in micropores. The filling of mesopores and the outer carbon surface by surfactant molecules leads to a regular decrease in thermal stability and an increase in the adsorbent surface’s hydrophilicity.
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C. M. Gonzalez-Garcia, M. L. Gonzalez-Martin, A. M. Gallardo-Moreno, V. Gomez-Serrano, L. Labajos-Broncano, and J. M. Bruque, Sep. Sci. Technol. 37, 2823 (2002).
N. Schouten, L. G. J. van der Ham, G.-J. W. Euverink, and A. B. Haan, Water Res. 41, 4233 (2007).
E. Ayranci and O. Dumana, J. Hazard. Mater. 148, 75 (2007).
S. H. Wu and P. Pendleton, J. Colloid Interface Sci. 243, 306 (2001).
P. Pendleton, S. H. Wu, and A. Badalyan, J. Colloid Interface Sci. 246, 235 (2002).
D. Knappe, Effects of Activated Carbon Characteristics on Organic Contaminant Removal, in AwwaRF Report Series (Int. Water Assoc., London, 2004), p. 5.
T. A. Savitskaya, T. N. Nevar, and D. D. Grinshpan, Colloid J. 68, 86 (2006).
D. A. Kolyshkin and K. K. Mikhailova, Active Charcoals. Properties and Methods of Tests. Guide (Khimiya, Moscow, 1972) [in Russian].
Determination of Particle Size Distribution by Gravitational Liquid Sedimentation Methods, Part 1: General Principles and Guidelines, ISO 13317-1 (2001).
Water Quality — Determination of Surfactants, Part 1: Determination of Anionic Surfactants by Measurement of the Methylene Blue Index, ISO 16265 (2009).
Ch. H. Giles and D. Smith, J. Colloid Interface Sci. 47, 755 (1974).
A. M. Koganovskii, N. A. Klimenko, T. M. Levchenko, and I. G. Roda, Adsorption of Organic Substances from Water (Khimiya, Leningrad, 1990) [in Russian].
M. Sammalkorpi, A. Z. Panagiotopoulos, and M. Haataja, J. Phys. Chem. B 112, 2915 (2008).
J. L. Wolgemuth, R. K. Workman, and S. Manne, Langmuir 16, 3077 (2000).
P. A. Quinlivan, L. Li, and D. Knappe, Water Res. 39, 1663 (2005).
K. Ebie, F. Li, Y. Azuma, A. Yuasa, and T. Hagishita, Water Res. 35, 167 (2001).
H. Jobic, J. Mol. Catal. A: Chem. 158, 135 (2000).
M. G. Ivanets, T. A. Savitskaya, T. N. Nevar, and D. D. Grinshpan, Inorg. Mater. 47, 1061 (2011).
M. Rinodo, N. R. Kil’deeva, and V. G. Babak, Russ. J. Gen. Chem. 78, 2239 (2008).
A. Dedinaite, J. Phys. Chem. B 107, 8181 (2003).
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Original Russian Text © M.G. Ivanets, T.A. Savitskaya, T.N. Nevar, D.D. Grinshpan, 2012, published in Zhurnal Fizicheskoi Khimii, 2012, Vol. 86, No. 11, pp. 1835–1840
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Ivanets, M.G., Savitskaya, T.A., Nevar, T.N. et al. Adsorption of sodium dodecylsulfate on modified carbon adsorbents. Russ. J. Phys. Chem. 86, 1710–1715 (2012). https://doi.org/10.1134/S0036024412110143
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DOI: https://doi.org/10.1134/S0036024412110143