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Using Fluid Loss to Evaluate the Hydraulic Conductivity of Geosynthetic Clay Liners Under Mining Leachates

  • Yang Liu
  • Yu Hao
  • Lizhen Wang
Conference paper
Part of the Environmental Science and Engineering book series (ESE)

Abstract

Geosynthetic clay liners (GCLs) are increasingly used in mining applications, their hydraulic performance need to be further assessed. In this study, the fluid loss (FL) tests of three bentonites from different GCLs were conducted under different mining leachates. The results suggest that the FL values in mining leachates greatly increased compared to those in water. The greater ionic strength of the leachates led to much higher fluid loss. The triaxial hydraulic conductivity tests using mining leachates as permeant solutions were also performed, the hydraulic conductivity (k) value increased with the increased ionic strength of the mining leachates. The relationship between fluid loss and hydraulic conductivity was also established. The k calculated from the FL test (kFL) is in good agreement with that from triaxial hydraulic conductivity test (kTri). Therefore, the FL test could be considered as a quick method to evaluate the hydraulic conductivity under the studied mining leachates. This study would provide useful reference to the mining application of GCLs.

Keywords

Geosynthetic Clay Liners Mining leachates Fluid loss Hydraulic conductivity 

Notes

Acknowledgments

The first author was funded by the Open Research Fund Program of Hunan Provincial Key Laboratory of Shale Gas Resource Utilization, Hunan University of Science and Technology (Grant No. E21818); the National Natural Science Foundation of China (Project No. 51608192); the Natural Science Foundation of Hunan Province (Grant No. 2016JJ4031).

References

  1. Bouazza A (2002) Geosynthetic clay liners. Geotext Geomembr 20(1):3–17CrossRefGoogle Scholar
  2. Hornsey WP, Scheirs J, Gates WP, Bouazza A (2010) The impact of mining solutions/liquors on geosynthetics. Geotext Geomembr 28(2):191–198CrossRefGoogle Scholar
  3. Gates WP, Buckley J (2009) Geosynthetic clay liners–is the key component being overlooked? In: GIGSA GeoAfrica 2009 Conference, Cape Town, 2–5 September, pp 1–10Google Scholar
  4. Shackelford CD, Sevick GW, Eykholt GR (2010) Hydraulic conductivity of geosynthetic clay liners to tailings impoundment solutions. Geotext Geomembr 28(2):149–162CrossRefGoogle Scholar
  5. Liu Y, Gates WP, Bouazza A (2013) Acid induced degradation of the bentonite component used in geosynthetic clay liners. Geotext Geomembr 36(2–4):71–80CrossRefGoogle Scholar
  6. Petrov RJ, Rowe RK, Quigley RM (1997) Selected factors influencing GCL hydraulic conductivity. J Geotech Geoenviron Eng 123(8):683–695CrossRefGoogle Scholar
  7. Shackelford CD, Benson CH, Katsumi T, Edil TB, Lin L (2000) Evaluating the hydraulic conductivity of GCLs permeated with non-standard liquids. Geotext Geomembr 18(2–4):133–161CrossRefGoogle Scholar
  8. Kolstad DC, Benson CH, Edil TB, Jo HY (2004) Hydraulic conductivity of a dense prehydrated GCL permeated with aggressive inorganic solutions. Geosynth Int 11(3):233–241CrossRefGoogle Scholar
  9. Benson C, Ören A, Gates WP (2010) Hydraulic conductivity of two geosynthetic clay liners permeated with a hyperalkaline solution. Geotext Geomembr 28(2):206–218CrossRefGoogle Scholar
  10. Gates WP, Bouazza A (2010) Bentonite transformations in strongly alkaline solutions. Geotext Geomembr 28(2):219–225CrossRefGoogle Scholar
  11. Olsta J, Daniel D, Chung J (2004) Various aspects of sodium bentonite testing. In: Advances in geosynthetic clay liner technology: 2nd symposium. ASTM STP 1456. ASTM International, West Conshohocken, PA, pp 3–10Google Scholar
  12. Chung J, Daniel D (2008) Modified fluid loss test as an improved measure of hydraulic conductivity for bentonite. Geotech Test J 31(3):243–251Google Scholar
  13. Liu Y, Gates WP, Bouazza A, Rowe RK (2014) Fluid loss as a quick method to evaluate the hydraulic conductivity of geosynthetic clay liners under acidic conditions. Can Geotech J 51(2):158–163CrossRefGoogle Scholar
  14. Rosin-Paumier S, Touze-Foltz N, Pantet A, Monnet P, Didier G, Guyonnet D (2010) Swell index, oedopermeametric, filter press and rheometric tests for identifying the qualification of bentonites used in GCLs. Geosynth Int 17(1):1–11CrossRefGoogle Scholar
  15. Rosin-Paumier S, Touze-Foltz N (2012) Hydraulic and chemical evolution of GCLs during filter press and oedopermeametric tests performed with real leachate. Geotext Geomembr 33:15–24CrossRefGoogle Scholar
  16. Rushton A, Ward AS, Holdich RG (2000) Solid-liquid filtration and separation technology, 2nd edn. Wiley-VCH Verlag GmbH, WeinbeimGoogle Scholar
  17. Liu Y, Bouazza A, Gates WP, Rowe RK (2015) Hydraulic performance of geosynthetic clay liners to sulfuric acid solutions. Geotext Geomembr 43(2):14–23CrossRefGoogle Scholar
  18. Shackelford CD, Malusis MA, Majeski MJ, Stern RT (1999) Electrical conductivity breakthrough curves. J Geotech Geoenviron Eng 125(4):260–270CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of GeologyHunan University of Science and TechnologyXiangtanChina
  2. 2.Hunan Provincial Key Laboratory of Shale Gas Resource UtilizationHunan University of Science and TechnologyXiangtanChina
  3. 3.Changsha Research Institute of Mining and Metallurgy Co., Ltd.ChangshaChina

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