The potential role of geosynthetic clay liners in mine water treatment systems

Lange, K.; Rowe, R. Kerry; Jamieson, Heather E.

doi:10.1016/j.geotexmem.2009.10.003

Cited by 45 publications

(16 citation statements)

References 21 publications

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“…Numerous experimental studies have been conducted to investigate the hydraulic and contaminant transport properties of conventional GCLs consisting of loose, granular or powdered Na bentonite held between two geotextiles (e.g., Boardman and Daniel, 1996;Lin and Benson, 2000;Lake and Rowe, 2000;Shackelford et al, 2000;Jo et al, 2001;Malusis and Shackelford, 2002a,b;Shackelford and Lee, 2003;Benson et al, 2010;Lange et al, 2010;Shackelford et al, 2010;Kang and Shackelford, 2011;Rowe and Hosney, 2013;Bouazza and Gates, 2014;Hosney and Rowe, 2014;Liu et al, 2014Liu et al, , 2015Makusa et al, 2014), such as the GCL shown in Fig. 1a.…”

Section: Introductionmentioning

confidence: 99%

Membrane efficiency and diffusive tortuosity of a dense prehydrated geosynthetic clay liner

Malusis

Daniyarov

2016

Geotextiles and Geomembranes

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Section: Introductionmentioning

confidence: 99%

Membrane efficiency and diffusive tortuosity of a dense prehydrated geosynthetic clay liner

Malusis

Daniyarov

2016

Geotextiles and Geomembranes

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“…Much recent research has been conducted concerning the performance of GCLs either alone or as part of composite liner systems (Take et al 2009Benson et al 2010aBenson et al , 2010bDickinson and Brachman 2010;Gates and Bouazza 2010;Hornsey et al 2010;Lange et al 2010;Rosin-Paumier et al 2010; as part of exposed composite liners -in part, because GCLs should not be left exposed for prolonged periods of time -and none dealing with the issue to be addressed in this paper.…”

Section: Introductionmentioning

confidence: 99%

Observations of bentonite erosion from solar-driven moisture migration in GCLs covered only by a black geomembrane

Take

Brachman

Rowe

2015

Geosynthetics International

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Manufacturers of geosynthetic liner materials recommend that composite geomembrane/geosynthetic clay liners (GCLs) be covered in a timely fashion to avoid potential issues that may arise under the action of long-term solar exposure. In this paper, field evidence of a new, never before reported solar-exposure driven damage mechanism for GCLs covered only by a black geomembrane and left exposed for more than 3 years is presented. Solar exposure can give rise to a large daily variation in geomembrane temperature, which causes a moisture cycle within the interface between the geomembrane and GCL resulting in the formation and flow of condensed moisture beneath the geomembrane. All four of the GCL products investigated at the Queen's University Environmental Liner Test Site were shown to have experienced significant bentonite erosion after 4.7 years of exposure. Erosion was identified in the field through a tactile survey of GCL panels in which the stiffness response of the GCL to touch was used to identify eroded zones. A change in the colour of the GCL, although useful to identify possibly eroded zones in some GCL products, proved ineffective in others. Erosion features were observed with widths up to and exceeding 200 mm across, making them unlikely to undergo self-healing upon hydration and application of normal stress. As a result, the observed erosion features would have severe adverse consequences for leakage rates through the GCL component of a composite liner barrier system. These observations provide yet another strong motivation for timely covering of composite landfill liner systems.

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“…Leaching is one of the main means by which metals from AMLs find their way and contaminate the underground water bodies (Lange et al 2010). Water draining from active and abandoned coal and base metal mines generally contains sulfuric acid and heavy metals at high levels which could contaminate streams and agricultural land.…”

Section: Impact Of Amls On Aquatic Ecosystemmentioning

confidence: 99%

Abandoned metalliferous mines: ecological impacts and potential approaches for reclamation

Venkateswarlu

Nirola

Kuppusamy

et al. 2016

Rev Environ Sci Biotechnol

119

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The lack of awareness for timely management of the environment surrounding a metal mine site results in several adverse consequences such as rampant business losses, abandoning the bread-earning mining industry, domestic instability and rise in ghost towns, increased environmental pollution, and indirect long-term impacts on the ecosystem. Although several abandoned mine lands (AMLs) exist globally, information on these derelict mines has not been consolidated in the literature. We present here the state-of-the-art on AMLs in major mining countries with emphasis on their impact towards soil health and biodiversity, remediation methods, and laws governing management of mined sites. While reclamation of metalliferous mines by phytoremediation is still a suitable option, there exist several limitations for its implementation. However, many issues of phytoremediation at the derelict mines can be resolved following phytostabilization, a technology that is effective also at the modern operational mine sites. The use of transgenic plant species in phytoremediation of metals in contaminated sites is also gaining momentum. In any case, monitoring and efficacy testing for bioremediation of mined sites is essential. The approaches for reclamation of metalliferous mines such as environmental awareness, effective planning and assessment of pre-and postmining activities, implementation of regulations, and a safe and good use of phytostabilizers among the native plants for revegetation and ecological restoration are discussed in detail in the present review. We also suggest the use of microbially-enhanced phytoremediation and nanotechnology for efficient reclamation of AMLs, and identify future work warranted in this area of research. Further, we believe that the integration of science of remediation with mining policies and regulations is a reliable option which when executed can virtually balance economic development and environmental destruction for safer future.

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The potential role of geosynthetic clay liners in mine water treatment systems

Cited by 45 publications

References 21 publications

Membrane efficiency and diffusive tortuosity of a dense prehydrated geosynthetic clay liner

Membrane efficiency and diffusive tortuosity of a dense prehydrated geosynthetic clay liner

Observations of bentonite erosion from solar-driven moisture migration in GCLs covered only by a black geomembrane

Abandoned metalliferous mines: ecological impacts and potential approaches for reclamation

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