2019
DOI: 10.1016/j.scitotenv.2019.01.076
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Controls on rare-earth element transport in a river impacted by ion-adsorption rare-earth mining

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Cited by 32 publications
(12 citation statements)
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“…The average values of REE concentrations in the acid mine waters were several orders of magnitude higher than those in natural near-neutral waters (Ayora et al, 2016). Specifically, the average total REE (ΣREE) concentrations in our samples (0.003 to 2.18 mg/L, average 0.94 mg/L) were comparable to the values reported by Liu et al (2019a) (up to 10.86 mg/L, average 1.14 mg/L) found for the same study area. The MW samples showed higher ΣREE+Y concentrations than NDT, CPT and GW samples.…”
Section: Geochemical Characteristicssupporting
confidence: 71%
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“…The average values of REE concentrations in the acid mine waters were several orders of magnitude higher than those in natural near-neutral waters (Ayora et al, 2016). Specifically, the average total REE (ΣREE) concentrations in our samples (0.003 to 2.18 mg/L, average 0.94 mg/L) were comparable to the values reported by Liu et al (2019a) (up to 10.86 mg/L, average 1.14 mg/L) found for the same study area. The MW samples showed higher ΣREE+Y concentrations than NDT, CPT and GW samples.…”
Section: Geochemical Characteristicssupporting
confidence: 71%
“…The REE+Y were mainly mined via heap leaching, and this technology produced a large amount of acid mine drainage (AMD) and mine tailings (Liu et al, 2019b). The AMD potentially migrating into subsurface environments imposed severe REE+Y contamination to soils, waters, and crops (Liu et al, 2019a;Liu et al, 2020). The thus increased REE+Y emissions to the environment have caused worldwide concerns (Vaziri Hassas et al, 2021;Ayora et al, 2016).…”
Section: Introductionmentioning
confidence: 99%
“…The underground shaft technology is not easy to implement, because leaching solutions infiltrate into grounds and percolate with water flowing, generating environmental contaminations. Ammonium has been reported to exceed the threshold recorded in groundwater quality standard due to usage of ammonium sulfate as a leaching liquor (Liu et al, 2019). Additionally, slags and waste dumps produced over mining activities are potential risks to the surrounding rivers, especially during rainy seasons.…”
Section: Regional Hydrogeological Settingsmentioning
confidence: 99%
“…Some studies reported that REE+Y were scavenged by Fe, Al and Mn oxyhydroxides, which may also be one of reasons for their co-occurrences. Presence of SO4 2could be of both anthropogenic and natural processes (Liu et al, 2019). Further, SO4 2shows high affinities to REE+Y under acid conditions via complexation leading to enhanced migrations of REE+Y (Li and Wu, 2017).…”
Section: Ree+y Occurrences and Comparison With Other Mine Sites Worldwidementioning
confidence: 99%
“…In the past decades, the anomalously high REE concentrations being commonly detected in water resources has raised global concern due to their potential for long-distance transport, toxicity, and bioaccumulation [13,14]. This issue has been accentuated by a steep increase in REE demand which leads to a growing environmental discharge of REE, posing a potential risk to human health and ecological system [15,16]. Therefore, full understanding of the fate and transport of REE in hydrosystems is an important issue to protect human health and support sound environmental policy-making.…”
Section: Introductionmentioning
confidence: 99%