Role of Manganese Oxyhydroxides in the Transport of Rare Earth Elements Along a Groundwater Flow Path

Liu, Haiyan; Guo, Huaming; Pourret, Olivier; Chen, Yi; Yuan, Rongxiao

doi:10.3390/ijerph16132263

Cited by 8 publications

(5 citation statements)

References 73 publications

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“…Fe, Mn) oxides (Yu et al, 2017). Results of our recent study showed that Ce precipitation from oxic aqueous solution was more likely to occur in the piedmont aquifers where low-Fe/Mn-concentration groundwater prevailed (Liu et al, 2019a), though no pronounced positive Ce anomalies were commonly observed in the piedmont aquifer sediments. Thus, both positive and negative Ce anomalies, and no Ce anomalies can be found in solid phases in nature, as the results shown in present study.…”

Section: Ree Fractionation Patternsmentioning

confidence: 75%

Distribution of rare earth elements in sediments of the North China Plain: A probe of sedimentation process

Liu

Guo

Pourret

et al. 2021

Applied Geochemistry

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Rare earth elements (REE) are powerful tracers for our understanding of sedimentary provenance and depositional processes. This study investigated geochemical characteristics of REE in sediment samples collected from piedmont, central and littoral plains of the North China Plain. Results showed that total REE concentrations exhibited a decreasing trend as piedmont > central > littoral, and 82%, 70% and 67% samples had total REE concentrations higher than the value of Upper Continental Crust. The REE concentrations were controlled by sedimentary provenance and sediment physicochemical properties. Ternary diagrams of sandstone classification and Al 2 O 3 -CaO+Na 2 O-K 2 O reflected that sediments originated from greywackes and they experienced an incipient to intermediate chemical weathering. Average Chemical Index of Alteration values were 68, 51 and 55 for sediments from piedmont, central and littoral sediments, respectively. Sediment North American Shale Composite (NASC)-normalized patterns were characterized by light REE (LREE) enrichment over heavy REE (HREE) and coherent negative Eu anomalies (Eu/Eu* ranging between 0.57 and 1.00). Value of (La/Yb) NASC ranged from 0.86 to 1.15 (average 1.23), and from 1.03 to 1.49, and from 0.91 to 1.49 in three zones, indicating REE fractionation from piedmont to littoral occurred during sedimentation processes. A positive correlation between (La/Yb) NASC and total REE concentrations was observed in piedmont and central sediment samples, implying that LREE were preferentially enriched over HREE with an accumulation of REE. This positive correlation was not found in littoral sediment samples, where a general decreasing trend along depth for REE concentrations existed. Results of this study shows 3 implications for using REE as a tracer in provenance studies from a basin scale.

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Section: Ree Fractionation Patternsmentioning

confidence: 75%

Distribution of rare earth elements in sediments of the North China Plain: A probe of sedimentation process

Liu

Guo

Pourret

et al. 2021

Applied Geochemistry

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“…According to the statistical calculation results, the contents of As, Fe, and Mn in groundwater were from a native environment. Furthermore, the release of Fe and Mn from rock and soil to groundwater is controlled by nitrogen caused by agricultural activities [ 24 , 50 ]. Therefore, it can be concluded that F1 mainly reflects the influence of a native environment and agricultural activities.…”

Section: Discussionmentioning

confidence: 99%

Distribution, Genesis, and Human Health Risks of Groundwater Heavy Metals Impacted by the Typical Setting of Songnen Plain of NE China

Zhai

Zheng

et al. 2022

IJERPH

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Heavy metals pollution in groundwater and the resulting health risks have always been an environmental research hotspot. However, the available information regarding this topic and associated methods is still limited. This study collected 98 groundwater samples from a typical agricultural area of Songnen Plain in different seasons. The pollution status and sources of ten heavy metals (As, Ba, Cd, Co, Cr (VI), Cu, Fe, Mn, Ni, Pb, and Zn) were then analyzed and compared. In addition, the human health risks assessment (HHRA) model was used to calculate human health risks caused by heavy metals in groundwater. The results revealed that heavy metals were mainly distributed in the northwest of the study area and along the upper reaches of the Lalin river and that the concentrations of heavy metals were higher during the wet season than the dry season. Industrial and agricultural activities and natural leaching are the main sources, and each kind of heavy metal may have different sources. Fe and Mn are the primary pollutants, mainly caused by the native environment and agricultural activities. The exceeding standard rates are 71.74% and 61.54%, respectively based on the Class III of Quality Standard for Groundwater of China (GB/T 14848-2017). The maximum exceeding multiple are 91.45 and 32.05, respectively. The health risks of heavy metals borne by different groups of people were as follows: child > elder > young > adult. Carcinogenic heavy metals contribute to the main risks, and the largest risks sources are Cr and As. Therefore, the government should appropriately restrict the use of pesticides and fertilizers, strictly manage the discharge of enterprises, and control man-made heavy metals from the source. In addition, centralized water supply and treatment facilities shall be established to prevent the harm of native heavy metals.

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“…These changes in the groundwater chemical composition affect the mobility of different solutes. For example, the changes in salinity and the concentration of organic matter affect REE speciation and retention mechanisms. , In addition, the composition of the coastal aquifer might change spatially, which results in different retention mechanisms along paths of water flow …”

Section: Introductionmentioning

confidence: 99%

“…41,42 In addition, the composition of the coastal aquifer might change spatially, which results in different retention mechanisms along paths of water flow. 53 The main objective of this study is to explore the mechanisms that control the mobility and retention of REEs in different coastal aquifer materials at variable salinities. These goals are motivated by the fact that the production and use of REEs have grown significantly over the last decades, thus raising the potential for increased environmental contamination.…”

Section: Introductionmentioning

confidence: 99%

“…Understanding the geochemical behavior of potential contaminants, such as anthropogenic REEs in aquifers, is critical because groundwater is a primary source of drinking water. So far, most studies on REE mobility in groundwater systems involved either (i) laboratory investigation on a single aquifer material (e.g., sand, − soil, , different clays, , granite, and carbonate rock , ), or (ii) analysis of complex field data, for example, refs – . As a result, little is known about the mechanisms that control the mobility and retention of REEs while interacting with an aquifer system composed of complex combinations of natural materials, specifically, coastal aquifer materials.…”

Section: Introductionmentioning

confidence: 99%

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Mobility of Rare Earth Elements in Coastal Aquifer Materials under Fresh and Brackish Water Conditions

Amiel,

Dror,

Berkowitz

2024

ACS Environ. Au

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The indispensable role of rare earth elements (REEs) in manufacturing high-tech products and developing various technologies has resulted in a surge in REE extraction and processing. The latter, in turn, intensifies the release of anthropogenic REEs into the environment, particularly in the groundwater system. REE contamination in coastal aquifer systems, which serve as drinking and domestic water sources for large populations, demands a thorough understanding of the mechanisms that govern REE transport and retention in these environments. In this study, we conducted batch and column experiments using five representative coastal aquifer materials and an acid-wash sand sample as a benchmark. These experiments were conducted by adding humic acid (HA) to the REE solution under fresh and brackish water conditions using NaCl, representing different groundwater compositions in coastal aquifers. The REEs were shown to be most mobile in the acid-wash sand and natural sand samples, followed by two types of low-carbonate calcareous sandstone and one type of high-calcareous sandstone and the least mobile in red loamy sand. The mobility of REEs, found in solution primarily as REE–HA complexes, was controlled mainly by the retention of HA, which increases with increasing ionic strength and surface area of the aquifer material. Furthermore, it was found that the presence of carbonate and clay minerals reduces the REE mobility due to enhanced surface interactions. The higher recoveries of middle-REE (MREE) in the column experiment effluents observed for the acid-wash sand and natural sand samples were due to the higher stabilization of MREE–HA complexes compared to light-REE (LREE) and heavy-REE (HREE) HA complexes. Higher HREE recoveries were observed for the calcareous sandstones due to the preferred complexation of HREE with carbonate ions and for the red loamy sand due to the preferred retention of LREE and MREE by clay, iron, and manganese minerals.

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Role of Manganese Oxyhydroxides in the Transport of Rare Earth Elements Along a Groundwater Flow Path

Cited by 8 publications

References 73 publications

Distribution of rare earth elements in sediments of the North China Plain: A probe of sedimentation process

Distribution of rare earth elements in sediments of the North China Plain: A probe of sedimentation process

Distribution, Genesis, and Human Health Risks of Groundwater Heavy Metals Impacted by the Typical Setting of Songnen Plain of NE China

Mobility of Rare Earth Elements in Coastal Aquifer Materials under Fresh and Brackish Water Conditions

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