Mobility and retention of indium and gallium in saturated porous media

Ringering, Kerstin; Kouhail, Yasmine; Yecheskel, Yinon; Dror, Ishai; Berkowitz, Brian

doi:10.1016/j.jhazmat.2018.09.079

Cited by 7 publications

(4 citation statements)

References 47 publications

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“…The presence of humic acid in the Andosol and the citric acid that was added to the soil can affect indium mobility. As observed by Ringering et al (2019) and in the section Colloid-facilitated transport, indium probably also migrated as indium-citrate and indium-humic acid complexes. More studies on the speciation and transport of indium are needed to understand its behaviour in the environment.…”

supporting

confidence: 59%

“…TCEs that are expected to have the same chemistry behave differently in soils. For example, indium and gallium do not behave similarly in the presence of organic matter (Ringering et al 2019), three similar platinum pharmaceuticals exhibit different transport behaviours (Goykhman et al 2018(Goykhman et al , 2019, and REEs can be fractionated into light REEs and heavy REEs (P edrot et al 2008). Therefore, studying the behaviour of one TCE as a representative of other TCEs is not sufficient.…”

Section: Discussionmentioning

confidence: 99%

“…A recent study focussed on indium and gallium transport (Ringering et al 2019), which, as REEs, are expected to be more mobile in the presence of organic matter. The effect of humic acid -as a representative higher molecular weight organic molecule present in soils and water -on the transport of indiumcitrate and gallium-citrate complexes in quartz sand was investigated.…”

Section: Indium and Galliummentioning

confidence: 99%

“…With regard to indium and gallium, citrate was used to bind the metals owing to their low solubility at neutral pH (Ringering et al 2019); thus, this study focussed on the impact of humic substances on the transport of indium and gallium citrate complexes, and not only on the transport of indium and gallium (as the presence of citrate alters the retention of the metals in the sand). The use of citrate in this study was relevant regarding gallium because gallium citrate is used in medical imaging (Anderson and Welch 1999) and can therefore reach the environment in this form.…”

Section: General Comments and Future Directionsmentioning

confidence: 99%

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Current knowledge on transport and reactivity of technology-critical elements (TCEs) in soil and aquifer environments

2020

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Environmental contextTechnology-critical elements, widely used in modern industry, are found in the environment as a result of both anthropogenic usage and natural sources. This review describes current knowledge on the transport of technology-critical elements in sand, soils and aquifer environments. The chemical compositions of the soils and groundwaters influence the transport of technology-critical elements, and natural colloids increase their mobility. AbstractTechnology-critical elements (TCEs) are now present in soil and aquifer environments, as a result not only of the geogenic origin but also of the recent anthropogenic activities and release. TCEs can interact with all components of the soil and water, which include inorganic and organic ligands (natural organic matter), clays, mineral surfaces and microorganisms. The literature regarding the transport and fate of TCEs in subsurface porous media (e.g. soil and aquifers) is limited and highly diverse. This review offers a detailed analysis of the existing literature on the transport and fate of TCEs in porous media, and emphasises what is still needed to fully understand their behaviour in the environment. Different modes of TCE transport are presented. First, the mobility of TCEs following interaction with colloids (e.g. natural organic matter, clays) is described. For these cases, an increase in the ionic strength and pH of aqueous solutions shows stronger retention or sorption of TCEs on porous matrices. The transport of nanoparticles (NPs) that contain TCEs is presented as a second mode of mobility. The ionic strength of the solution is the key parameter that controls the transport of cerium nanoparticles in porous media; natural organic matter also increases the mobility of nanoparticles. The third part of this review describes sorption and dissolution processes during transport. Finally, results from the field experiments are reported, which show that rare earth elements and indium are transported in the presence of natural organic matter. We conclude this review with suggested directions for future research.

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confidence: 59%