Consolidation and Hydraulic Conductivity of Oil Sand Mature Fine Tailings Dewatered by Using Super Absorbent Polymer
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 140, Issue 7
Abstract
A comprehensive experimental program that consists of consolidation and hydraulic conductivity tests has been conducted on mature fine tailings (MFTs) dewatered with super absorbent polymer (SAP) as well as MFTs dewatered with SAP and subjected to freeze-thaw cycles. The consolidation behavior and hydraulic conductivity of MFTs dewatered by using recycled SAP are also investigated. The obtained results indicate that dewatering by using SAP or a combination of dewatering by using SAP and a freeze/thaw process can significantly increase the solid content and decrease the initial void ratio and compressibility of the MFTs. Moreover, the freeze–thaw process can significantly increase the hydraulic conductivity of the MFTs, which, in combination with reduced compressibility, will improve the MFT consolidation.
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References
Alamgir, A., Harbottle, D., Masliyah, J., and Xu, Z. (2012). “Al-PAM assisted filtration system for abatement of mature fine tailings.” Chem. Eng. Sci., 80(1), 91–99.
Alberta Energy Resources Conservation Board (ERCB). (2009). Directive 074: Tailings performance criteria and requirements for oil sands mining schemes, Calgary, AB, Canada.
ARK. (2003). “Aqua Sorb.” The ARK Enterprises, Ionia, MO. 〈http://www.arkent.com/aqua-sorb.html〉 (Jan. 27, 2013).
ASTM. (2002). “Standard test methods for specific gravity of soil solids by water pycnometer.” D854-02, West Conshohocken, PA.
ASTM. (2006). “Standard test method for permeability of granular soils (constant head).” D2434-68, West Conshohocken, PA.
ASTM. (2010). “Standard test methods for liquid limit, plastic limit, and plasticity index of soils.” D4318-10e1, West Conshohocken, PA.
ASTM. (2011). “Standard test methods for one-dimensional consolidation properties of soils using incremental loading.” D2435/D2435M-11, West Conshohocken, PA.
Chalaturnyk, R. J., Scott, J. D., and Ozum, B. (2002). “Management of oil sand tailings.” J. Pet. Sci. Technol., 20(9), 1025–1046.
Dawson, R. F., Sego, D. C., and Pollock, G. W. (1999). “Freeze-thaw dewatering of oil sands fine tails.” Can. Geotech. J., 36(4), 587–598.
Dzinomwa, G. P. T., Wood, C. J., and Hill, D. J. T. (1997). “Fine coal dewatering using pH- and temperature-sensitive superabsorbent polymers.” Polym. Adv. Technol., 8(12), 767–772.
Fall, M., Célestin, J. C., and Han, F. S. (2010). “Potential use of densified polymer-pastefill mixture as waste containment barrier materials.” Waste Manag., 30(12), 2570–2578.
Farkish, A., and Fall, M. (2013). “SAP based rapid dewatering of oil sands mature fine tailings.” Miner. Eng., 50–51(Sep.), 38–47.
Fox, P. J., and Berles, J. D. (1997). “CS2: A piecewise-linear model for large strain consolidation.” Int. J. Numer. Anal. Methods Geomech., 21(7), 453–475.
Fox, P. J., and Pu, H. (2012). “Enhanced CS2 model for large strain consolidation.” Int. J. Geomech., 574–583.
Gibson, R. E., England, G. L., and Hussey, M. J. L. (1967). “The theory of one-dimensional consolidation of saturated clays. I. Finite non-linear consolidation of thin homogeneous layers.” Geotechnique, 17(3), 261–273.
Gibson, R. E., Schiffman, R. L., and Cargill, K. W. (1981). “The theory of one-dimensional consolidation of thick homogeneous layers.” Can. Geotech. J., 18(2), 280–293.
Guo, Y. (2012). “Electro kinetic dewatering of oil sands tailings.” Master thesis, Univ. of Western Ontario, London, ON, Canada.
Johnson, R. L., Bork, P., Alen, E. A. D., James, W. H., and Koverny, L. (1993). “Oil sands sludge dewatering.” RRTAC 93-8, Alberta Conservation and Reclamation Council (LCRC), Edmonton, AB, Canada.
Pollock, W. G. (1988). “Large strain consolidation of oil sands tailings sludge.” M.A.Sc. thesis, Univ. of Alberta, Edmonton, AB, Canada.
Proskin, S., Sego, D., and Alostaz, M. (2010). “Freeze-thaw and consolidation tests on Suncor mature fine tailings (MFT).” J. Cold Regions Sci. Tech., 63(3), 110–120.
Rosa, F., and Casquilho, M. (2012). “Effect of synthesis parameters and of temperature of swelling on water absorption by a superabsorbent polymer.” Fuel Process. Technol., 103(Nov.), 174–177 (in Polish).
Suthaker, N. N., and Scott, J. D. (1996). “Measurement of hydraulic conductivity in oil sand tailings slurries.” Can. Geotech. J., 33(4), 642–653.
Terzaghi, K. (1943). Theoretical soil mechanics, Wiley, New York.
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© 2014 American Society of Civil Engineers.
History
Received: Mar 21, 2013
Accepted: Jan 31, 2014
Published online: Mar 25, 2014
Published in print: Jul 1, 2014
Discussion open until: Aug 25, 2014
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