Characterization of geosynthetic clay liner bentonite using micro-analytical methods

Alteration, adsorption and nucleation processes on clay–water interfaces: Mechanisms for the retention of uranium by altered clay surfaces on the nanometer scale

“…An interesting study not related to the sequestration of U was conducted by Lange et al (2010), who examined the interaction between metals in synthetic solutions (representing pore waters in an acid mine drainage and an Asbearing tailing of a gold mine) and geosynthetic clay liners composed of mainly montmorillonite and minor goethite. Micro-analyses of the solid-water interface along the clay liner showed that the majority of the metals were actually retained by goethite impurities rather than by the clay itself.…”

Filling the Gaps – From Microscopic Pore Structures to Transport Properties in Shales

“…Two synchrotron beamlines were presented in detail in the oral lectures, the GeoSoil-EnviroCARS (GSECARS) at the Advanced Photon Source (APS, Chicago, Illinois, USA) Sector 13 by Tony Lanzirotti (see Lanzirotti et al, 2016, this volume) and the I18 Beamline of the Diamond light source, UK, by Fred Mosselmans (see Mosselmans et al, 2016, this volume). The examples given in both presentations were not restricted to clay systems alone, but showed clearly the potential for clay-dominated systems (Lange et al, 2010). Improvements included synchronous micro-diffraction capabilities at high spatial resolution and high speed coupled with micro X-ray fluorescence (mXRF) mapping at GSECARS.…”

Simultaneous sorption of As, B, Cr, Mo and Se from coal fly ash leachates by Al3+-pillared bentonite clay: implication for the construction of activated geo-synthetic clay liner

“…As such, there is a need to come up with a sustainable and pragmatic technology that will be used to prevent the contamination of underground water resources by coal FA leachates. The most prominent technology relies on the use of clay liners and exchange resins beds on the ash retention pond linings (Lange et al 2005;Mapanda et al 2007;Lange et al 2010a, 2010b, Lu et al 2011Yang et al 2012;Fan 2014bFan , 2014aMusso et al 2014). Abundancy, high surface area, cation exchange capacity (CEC) and magnificent swelling capacity of clays made clay and clay minerals to anchor the depollution science (Bhattacharyya & Gupta 2008;Bhattacharya et al 2013).…”