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Iron-rich saponite: dissolution reactions and Cr uptake

Published online by Cambridge University Press:  09 July 2018

M. F. Brigatti ,
C. Lugli ,
L. Poppi  and
G. Venturelli
M. F. Brigatti
Affiliation:
Department of Earth Sciences, University of Modena, via S. Eufemia 19, I-41100 Modena
C. Lugli
Affiliation:
Department of Earth Sciences, University of Modena, via S. Eufemia 19, I-41100 Modena
L. Poppi
Affiliation:
Department of Earth Sciences, University of Modena, via S. Eufemia 19, I-41100 Modena
G. Venturelli
Affiliation:
Department of Earth Sciences, University of Parma, Parma, Italy
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Abstract

To gain a deeper understanding of the geochemical processes involved in the interactions between ionic solutions and clay minerals in natural systems, the dissolution rate of an Fe-rich saponite from Mt. Prinzera (Taro Valley, Italy) was measured as a function of pH and time at 25°C. Also, its ability to adsorb Cr was studied at varying metal concentrations (3.22, 5.50, 8.50 mEq l-1) and with different competing anions (CH3COO-, Cl-, NO3-). It was found that there is a correlation between the experimentally determined release rate constant (k), as defined by the relase of Si, and pH. In acidic solutions, the k values correlate negatively with pH, whereas the opposite occurs for basic solutions. The extent of Cr uptake was measured by analysis of the liquid portion separated by centrifugation after a controlled period of exposure. The Cr adsorbed for different concentrations and anionic environments shows the dependence of Cr uptake on the initial metal concentration and on accompanying anions in the order CH3COO-, Cl-, NO3-.

Type
Research Article
Information
Clay Minerals , Volume 34 , Issue 4 , December 1999 , pp. 637 - 645
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1999

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References

APHA, AWWA & WPCF (1970) Standard methods for the examination of Waters and Wastewater (Greemerg, A.E., Trussel, R.R. & Clesceri, L.S., editors), pp. 425-426. APHA.Google Scholar
Brown, G. & Brindley, G.W. (1980) X-ray diffraction procedures for clay mineral identification. Pp. 305—361 in: Crystal Structures of Clay Minerals and their X-ray Identification (Brindley, G.W. & Brown, G., editors). Mineralogical Society, London.Google Scholar
Buerge, I.J. & Hug, S.J. (1997) Kinetics and pH dependence of chromium (VI) reduction by iron (II). Environ. Sci. Tech. 31, 1426–1432.Google Scholar
Colombo, C. & Violante, A. (1997) Effect of ageing on the nature and interlay ering of mixed hydroxy Al-Femontmorillonite complexes. Clay Miner. 32, 55–64.Google Scholar
Cotton, F.A., Wilkinson, G. & Gaus, P.L. (1995) P. 635 in: Principi di Chimica Inorganica (Casa Editrice Ambrosiana, editor).Google Scholar
Davis, L.A. & Kent, D.B. (1990) Surface complexation modeling in aqueous geochemistry. Pp. 177—260 in: Mineral-Water Interface Geochemistry (Hochella, M.F. & White, A.F., editors). Reviews in Mineralogy, 23, Mineralogical Society of America, Washington D.C.Google Scholar
Eary, L.E. & Ray, D. (1991) Chromate reduction by subsurface soils under acidic conditions. J. Soil Sci. Soc. Amer. 55, 676–683.Google Scholar
Espenson, L.H. (1970) Rates studies on the primary step of the reduction of chromium (VI) by iron (II). J. Am. Chem. Soc. 92, 1880–1883.CrossRefGoogle Scholar
Farmer, V.C. (1974) The layer silicates. Pp. 331-365 in: The Infrared Spectra of Minerals (Farmer, V.C., editor). Mineralogical Society, London.Google Scholar
Farmer, V.C., Krishnamurti, G.S.R. & Huang, P.M. (1991) Synthetic allophane and layer silicate formation in SiO2-Al2O3-FeO-Fe2O3-MgO-H2O systems at 23°C and 89°C in a calcareous environment. Clays Clay Miner. 39, 561–570.Google Scholar
Farquhar, M.L., Vaughan, D.L., Hughes, C.R., Charnock, J.M. & England, K.E.R. (1997) Experimental studies of the interactions of aqueous metal cations with mineral substrates: Lead, cadmium, and copper with perthitic feldspar, muscovite, and biotite. Geochim. Cosmochim. Ada, 61, 3051–3064.Google Scholar
Fendorf, S.E. & Li, G. (1996) Kinetics of chromate reduction by ferrous iron. Environ. Sci. Tech. 30, 1614–1617.Google Scholar
Gan, H., Bailey, G.W. & Yu, Y.S. (1996) Morphology of lead (II) and chromium (III) reaction products on phyllosilicate surfaces as determined by atomic force microscopy. Clays Clay Miner. 44, 734–743.CrossRefGoogle Scholar
Kerger, B.D., Finley, B.L., Corbett, G.E., Dodge, D.G. & Paustenbach DJ. (1997) Ingestion of chromium (VI) in drinking water by human volunteers: absorption, distribution and excretion of single and repeated doses. J. Toxicol. Environ. Health, 50, 67–95.Google Scholar
Mackenzie, R.C. (1970) Simple phyllosilicates based on gibbsite- and brucite-like sheets. Pp. 498—534 in: Differential Thermal Analysis (Mackenzie, R.C., editor). Academic Press, London.Google Scholar
Mishra, S., Shanker, K., Srivastava, M.M., Srivastava, S., Shrivastav, R., Dass, S. & Prakash, S. (1997) A study on the uptake of trivalent and hexavalent chromium by paddy (Oryza Sativa): possible chemical modification in rhizosphere. Agriculture Ecosystems Environ. 62, 53–58.CrossRefGoogle Scholar
Murphy, W.M. & Helgeson, H. (1987) Thermodynamic and kinetic constraints on reaction rates among minerals and aqueous solutions. III. Activated complexes and the pH-dependence of the rates of feldspar, pyroxenes, wollastonite, and olivine hydrolysis. Geochim. Cosmochim. Ada, 51, 3137–3153.CrossRefGoogle Scholar
Nagy, K.L. (1995) Dissolution and precipitation kinetics of sheet silicates. Pp. 173—225 in: Chemical Weathering Rates of Silicate Minerals (White, A.F. & Brantley, S.L., editors). Reviews in Mineralogy, 31, Mineralogical Society of America, Washington D.C.Google Scholar
Nieboer, E. & Jusys, A.A. (1988) Biologic chemistry of chromium. Pp. 21—79 in: Chromium in the Natural and Human Environments (Nriagu, J.O. & Nieboer, E., editors). Wiley, New York.Google Scholar
Nriagu, J.O. (1988) Production and use of chromium. Pp. 81 — 104 in: Chromium in the Natural and Human Environments (Nriagu, J.O. & Nieboer, E., editors). Wiley, New York.Google Scholar
Pansini, M., Colella C, Caputo, D., De Gennaro, M., Langella, A. (1996) Evaluation of phillipsite as cation exchanger in lead removal from water. Microporous Mat. 5, 357–364.Google Scholar
Sedlak, D.L. & Chan, P. (1997) Reduction of hexavalent chromium by ferrous iron. Geochim. Cosmochim. Ada, 61, 2185–2192.CrossRefGoogle Scholar
Sheehan, P.J., Meyer, D.M., Sauer, M.M. & Paustenbach, D.J. (1991) Assessment of the human health risks posed by exposure to chromium-contaminated soils. J. Toxicol. Environ. Health, 32, 161–201.Google Scholar
Sposito, G. (1984) The Surface Chemistry of Soils. Oxford Univ. Press.Google Scholar
Taylor, R.M (1987) Non-silicate oxides and hydroxides. Pp. 129-201 in: Chemistry of Clays and Clay Minerals (Newman, A.C.D., editor). Mineralogical Society, London.Google Scholar
Tompson, A.F.B. & Jackson, K.J. (1996) Reactive transport in heterogeneous systems: an overview. Pp. 269—308 in: Reactive Transport in Porous Media (Lichther, P.C., Steelel, C.I., & Oelkers, E.H., editors). Reviews in Mineralogy, 34, Mineralogical Society of America, Washington D.C.Google Scholar
Venturelli, G., Contini, S., Bonazzi, A. & Mangia, A. (1997) Weathering of ultramafic rocks and element mobility at Mt. Prinzera, Northern Apennines, Italy. Mineral Mag. 61, 765–778.CrossRefGoogle Scholar
Wehrli, B. (1990) Redox reactions of metal ions at mineral surfaces. Pp. 311—336 in: Aquatic Chemical Kinetics: Reactions Rates of Processes in Natural Waters (Stumm, W., editor). Wiley, New York.Google Scholar
White, A.F. & Brantley, S.L. (1995) Chemical weathering rates of silicate minerals: an overview. Pp.1—21 in: Chemical Weathering Rates of Silicate Minerals. (White, A.F. & Brantley, S.L., editors). Reviews in Mineralogy, 31, Mineralogical Society of America, Washington D.C.CrossRefGoogle Scholar
Zachara, J.M., Cowan, C.E., Schmidt, R.L. & Ainsworth, C.C. (1988) Chromate adsoption by kaolinite. Clays Clay Miner. 36, 317–326.CrossRefGoogle Scholar