Authors: Maurice, C; Mäkitalo, M; Villain, L; Öhlander, B

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DOI https://doi.org/10.36487/ACG_rep/1063_43_Maurice

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Maurice, C, Mäkitalo, M, Villain, L & Öhlander, B 2010, 'Green liquor dregs for the amendment of tailings', in R Jewell & AB Fourie (eds), Proceedings of the Thirteenth International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 487-494, https://doi.org/10.36487/ACG_rep/1063_43_Maurice

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Abstract:
Green liquor dregs (GLD) from the sulphate pulping process is one of the main wastes from the pulp industry still being landfilled in Sweden. GLD has similar hydro-geotechnical properties as tailings paste and may be used as an amendment to tailings to reduce the leachate generation, improve the leachate quality, and improve the geotechnical properties of the mixture. The addition of 10% GLD (dry weight basis) reduced the hydraulic conductivity of the tailings by a factor of two. Addition of a 30% mixture (on a dry weight basis) of GLD and fly ash (FA) to tailings reduced the hydraulic conductivity by more than one order of magnitude. Thanks to its alkaline properties and it negative zeta potential, GLD has a direct effect on the metal leaching from tailings. The alkaline capacity of the pulping wastes raised the pH in the stabilised tailings and reduced leaching of Cu, Co, Cd, and Ni. Addition of 10% pulping waste to tailings on a dry weight basis was sufficient to reduce copper leaching by a factor of 4 to 10.

References:
Cooper, J. (1998) Particle Size Analysis – The Laser Diffraction Technique, Materials World, Vol. 6, No. 1, pp. 5–7.
De Boer, G.B.J., de Weerd, C., Thoenes, D. and Goossens, H.W.J. (1987) Laser diffraction spectrometry: Fraunhofer
versus Mie scattering, Part 4, pp. 14–19.
EN12457-3 (2002) Characterisation of waste, Leaching, Compliance test for leaching of granular waste materials and
sludges, European standard.
Eshel, G., Levy, G.J., Mingelgrin, U. and Singer, M.J. (2004) Critical evaluation of the use of laser diffraction for
particle-size distribution analysis, Soil Sci. Soc. Am. J., Vol. 68, pp. 736–743.
Hargelius, K. (2008) Pilotyta med tätskikt på Ätrans deponi, Fältförsök-Värö-FAVRAB-Hylte, Ramböll Sverige AB,
Region Väst, Gothenburg.
ISO (2006) Soil quality – Determination of hydraulic conductivity of saturated porous materials using a rigid-wall
permeameter, (ISO 17312:2006).
Kitagawa, Y. and Yorozu, Y. (2001) Zeta potentials of clay minerals estimated by an electrokinetic sonic amplitude
method and relation to their dispersibility, Clay Science, 11(4), pp. 329–336.
Maurice, C., Villain, L. and Hargelius, K. (2009) Green liquor dregs for the remediation of abandoned mine tailings-
opportunities and limitations, Proceedings of Securing the Future and 8th ICARD conference, Skellefteå,
Sweden, June 23–26.
Metreveli, G. and Frimmel, F.H. (2007) Influence of Na-bentonite colloids on the transport of heavy metals in porous
media, Published in Colloidal transport in Porous media, Springer, Berlin, pp. 29–53.
Pallier, V., Feuillade-Cathalifaud, G., Serpaud, B. and Bollinger, J-C. (2010) Effect of organic matter on arsenic
removal during coagulation/flocculation treatment, Journal of colloid and interface science, 342, pp. 26–32.
Pousette, K. and Macsik, J. (2000) Kartläggning av restprodukter från AssiDomän AB, Research report, Luleå
University of Technology, Luleå, Sweden.
SIS (1991) Geotechnical tests-compression properties - oedometer test, CRS-test-cohesive soil, SS 02 71 26, Swedish
Standards Institute, SIS förlag AB, Stockholm (in Swedish).
SIS (2004) Unbound and hydraulically bound mixtures - Part 2: Test methods for the determination of the laboratory
reference density and water content - Proctor compaction, SS-EN 13286-2:2004, Swedish Standards Institute,
SIS förlag AB, Stockholm.
U.S. Environmental Protection Agency (1991) Methods for the Determination of Metals in Environmental Samples
Environmental Monitoring Systems Laboratory, Office of Research and Development, Report EPA-600/4-91-
010, June 1991.
Villain, L. (2008) Pulping Wastes and Abandoned Mine remediation, Application of green liquor dregs and other
pulping by-products to the solidification/stabilization of copper mine tailings, Master Thesis 2008:081, Luleå
University of Technology, Luleå, Sweden.
Xu, J., Liu, J.W., Choung and Zhou, Z. (2003) Electrokinetic study of clay interactions with coal in flotation,
International Journal of Mineral Processing 68, pp. 183–196.




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