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In this paper, it is attempted to study the capacity of blast furnace to stabilize cr(VI)-contaminated soils. The slag samples are incorporated with soils in different proportions and the resulted leachate is tested using batch and column experiments to simulate static and dynamic flows. furthermore, the mechanism by which the chro-mium in the soil is reduced by the iron slag is discussed. The study demonstrated that blast furnace slag can effectively stabilize cr(VI)-contaminated soils.
batch experiments, blast furnace slag, Cr(VI), environmental pollution, leaching testcolumn test, reduction agents, soil stabilization
[1] Bartlett, R.J. & James, B.R., System for categorizing soil redox status by chemical fi eld testing. Geoderma, 68, pp. 211–218, 1995.
[2] Kindness, A. et al., Immobilization of chromium in cement matrices. Waste Management, 14, pp. 3–11, 1994.
[3] Mollah, M.Y. et al., The interfacial chemistry of solidifi cation/stabilization of metals in cement and pozzolanic material systems. Waste Management, 15(2), pp. 137–148, 1995.
[4] Allan, M.L. & Kukacka, L.E., Blast furnace slag-modifi ed grouts for in situ stabilization of chromium-contaminated soil. Waste Management, 15(3), pp. 193–202, 1995.
[5] Zamorani, E., et al., Chemical properties measurements and leaching behavior of chromium compounds solidifi ed in a cement matrix. Waste Management, 8, pp. 239–245, 1988.
[6] Dermatas, D. & Meng, X., Utilization of fly ash for stabilization/solidification of heavy metal contaminated soils. Journal of Engineering Geology, Elsevier Science, 70/3–4, pp. 377–394, 2003.
[7] Reyes-Gutierrez, L.R., Romero-Guzman, E.T., Cabral-Prieto, A. & Rodriguez-Castillo, R., Characterization of chromium in contaminated soil studied by SEM, EDS, XRD and Mossbauer spectroscopy. Journal of Minerals & Materials Characterization & Engineering, 7(1), pp. 59–70, 2007.
[8] Hassan, O.A.B., Experimental study on utilizing iron slag to stabilize soils Cr(VI)-contaminated soils. WIT Transactions on Ecology and the Environment, 140, WIT Press, 2010.
[9] Clesceri, L., Greenberg, A. & Eaton, A. (editors). Standard methods for the examination of water and wastewater. United Book Press, Inc.: Baltimore, Mayland, USA, 1998.
[10] Kim, H. Tan, Principles of Soil Chemistry, 3rd edn, (Books in Soils, Plants, and the Environment), CRC Press, 1998.
[11] Sparks, D., Environmental Soil Chemistry, Academic Press, 2002.
[12] Fall, J., Experimental Chemistry. Houghton Miffl in Harcourt, 2005.