1/8 Factorial Study of Metal Effects on Acid Neutralization by Cement
Publication: Journal of Environmental Engineering
Volume 126, Issue 10
Abstract
The acid neutralization capacity of a cement/waste product is important because the integrity of the monolithic matrix and contaminant precipitation are dependent on the maintenance of alkaline conditions. A 1/8 fractional factorial experiment was used to selectively examine the main effects of seven pure metal compounds on strength development and acid neutralization capacity of portland cement paste and to obtain information regarding interactions between the compounds. The hydration products in a portland cement paste appear as plateaus in its titration curve. Metal contaminants were found to affect the pH and acid neutralization capacities of these plateaus, suggesting that they change the hydration products. Cr(NO3)3 and ZnCl2, which exhibited individual effects and also interacted, caused the predominant effects. Comparison between predictions by a simple empirical linear model based on these contaminants and acid neutralization capacity of a real solidified metal plating waste showed that additional factors play an important role in real wastes.
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References
1.
Bhatty, J. I., and West, P. B. ( 1996). Stabilization of heavy metals in portland cement matrix: Effects on paste properties, stabilization and solidification of hazardous, radioactive, and mixed wastes: Vol. 3, ASTM STP 1240, T. Michael Gilliam and Carlton C. Wiles, eds., ASTM, West Conshohocken, Pa.
2.
Box, G. E., Hunter, W. G., and Hunter, S. J. ( 1978). Statistics for experimenters—An introduction to design, data analysis, and model building, Wiley, New York.
3.
Glass, G. K., and Buenfeld, N. R. ( 1999). “Differential acid neutralisation analysis.” Cement and Concrete Res., 29(10), 1681–1684.
4.
Mattus, C. H., and Mattus, A. J. ( 1996). “Literature review of the interaction of select inorganic species on the set and properties of cement and methods of abatement through waste pretreatment.” Stabilization and Solidification of Hazardous, Radioactive and Mixed Wastes: Vol. 3, ASTM STP 1240, T. Michael Gilliam and Carlton C. Wiles, eds., ASTM, West Conshohocken, Pa.
5.
Stegemann, J. A., et al. ( 1999). “Predicting the effects of impurities on cement—a workshop for end-users.” Waste Stabilisation and Environment, J. Mehu, G. Keck, and A. Navarro, eds., Societé Alpine de Publications, Grenoble, 225–254.
6.
Stegemann, J. A., and Côté, P. L. ( 1991). “Investigation of test methods for solidified waste evaluation—Appendix B: Test methods for solidified waste evaluation.” Environment Canada Manuscript Series, Document TS-15, Burlington, Ont., Canada.
7.
Stegemann, J. A., Shi, C., and Caldwell, R. J. ( 1997). “Response of various solidification systems to acid addition.” Proc., WASCON '94, Waste Mat. in Constr., Putting Theory into Pract., Studies in Envir. Sci. 71, Elsevier Science, Amsterdam, 803–814.
8.
Vale Parapar, J. F., Ruiz de Elvira Francoy, C., Rodriguez-Pinero, M., Salvador Martinez, L., and Fernandez Pereira, C. ( 1998). “Stabilization/solidification of hazardous metallic wastes: Prediction of leach test performance to optimize S/S mixtures.” Waste Mgmt. and Res., 16(2), 175–182.
9.
Zamorani, E., Sheikh, I., and Serrini, G. ( 1989). “A study of the influence of nickel chloride on the physical characteristics and leachability of portland cement.” Cement and Concrete Res., 19, 259–266.
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Received: Oct 27, 1999
Published online: Oct 1, 2000
Published in print: Oct 2000
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