Geochemistry of redox-sensitive elements and sulfur isotopes in the high arsenic groundwater system of Datong Basin, China

Xie, Xianjun; Ellis, A. S.; Wang, Yanxin; Xie, Zuoming; Duan, Mengyu; Su, Chunli

doi:10.1016/j.scitotenv.2009.01.041

Cited by 125 publications

(55 citation statements)

References 63 publications

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“…The thickness of the Cenozoic sediments ranges from 50 to 2,500 m. The shallow groundwaters mainly occur in the Quaternary alluvial, alluvial-pluvial, and alluvial-lacustrine aquifers. The shallow aquifer sediments are mainly lacustrine and alluvial-lacustrine medium-fine sand, silty clay and clay with high organic content (Xie et al, 2009). The sources of F in the Datong basin are mainly Archean gneisses and granites (Luo et al, 2008).…”

Section: Geological and Hydrogeological Characteristicsmentioning

confidence: 99%

Principal component analysis of fluoride geochemistry of groundwater in Shanxi and Inner Mongolia, China

Luo

Jing

2013

Journal of Geochemical Exploration

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Section: Geological and Hydrogeological Characteristicsmentioning

confidence: 99%

Principal component analysis of fluoride geochemistry of groundwater in Shanxi and Inner Mongolia, China

Luo

Jing

2013

Journal of Geochemical Exploration

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“…The samples have been geospatially located and the As concentrations transformed to a binary-code following to the As thresholds. A second database, containing 87 As concentrations in wells from the Datong Basin and Yuncheng Basin, has been created from published data (Currell et al, 2011;Xie et al, 2009). We excluded two spring samples in the Datong Basin and one sample in the Yuncheng Basin with an abnormally high As concentration, probably affected by local contamination.…”

Section: Arsenic Datasetmentioning

confidence: 99%

“…This indicates that villages in the center of the basin are more prone to have higher concentrations of As in groundwaters. Xie et al (2009) showed that As concentrations are very high in the central deeper parts of Datong Basin (68e670 mg L À1 ). Study in Cambodia also indicated that high As groundwaters were observed near the Mekong River (Polizzotto et al, 2008).…”

Section: Logistic Regression Modelmentioning

confidence: 99%

“…It is not known whether As contaminates the groundwater in the other densely populated basins. Quaternary aquifers are the most important source of groundwater in these basins (Guo et al, 2007a;Wang et al, 2009;Xie et al, 2009) and, despite waters rich in NaHCO 3 predominate (Currell et al, 2011;Xie et al, 2008), it appears that high As concentrations are exclusively correlated to reducing conditions in the basins (Guo et al, 2003;Li et al, 2007;Xie et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Predicting the risk of arsenic contaminated groundwater in Shanxi Province, Northern China

Zhang

Rodríguez‐Lado

Johnson

et al. 2012

Environmental Pollution

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a b s t r a c tShanxi Province is one of the regions in northern China where endemic arsenicosis occurs. In this study, stepwise logistic regression was applied to analyze the statistical relationships of a dataset of arsenic (As) concentrations in groundwaters with some environmental explanatory parameters. Finally, a 2D spatial model showing the potential As-affected areas in this province was created. We identified topography, gravity, hydrologic parameters and remote sensing information as explanatory variables with high potential to predict high As risk areas. The model identifies correctly the already known endemic areas of arsenism. We estimate that the area at risk exceeding 10 mg L À1 As occupies approximately 8100 km 2 in 30 counties in the province.

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“…In China, high arsenic-bearing groundwater mainly exists in Inner Mongolia, Shanxi, Xinjiang, etc., including 40 counties of eight provinces. For example, arsenic concentration in groundwater samples collected from the Hetao Plain in the Inner Mongolia Autonomous Region, Datong in Shanxi province, and Dzungaria district in Xinjiang province can be up to 1.09 mg/L [7], 1.82 mg/L [8], and 0.85 mg/L [9], respectively. It is obvious that the highest concentration of arsenic in arsenic-bearing groundwater in different regions in China can reach, or exceed, 1 mg/L.…”

Section: Introductionmentioning

confidence: 99%

Schwertmannite Adherence to the Reactor Wall during the Bio-Synthesis Process and Deterioration of Its Structural Characteristics and Arsenic(III) Removal Efficiency

et al. 2017

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Schwertmannite, a kind of iron oxyhydrosulfate mineral, can removal arsenic(III) from arsenic(III)-bearing groundwater by the adsorption process. In this study, schwertmannite was bio-synthesized by Acidithiobacillus ferrooxidans LX5 in shaking flasks (160 rpm) containing a 0.16 mol/L FeSO 4 liquid solution. After bio-synthesis, 25.5% of the bio-synthesized schwertmannite adhered to the reactor wall (designated as adhered-sch) and the remainder was suspended in the system (designated as suspended-sch). Particles of adhered-sch exhibited a fractured structure with a small specific surface area (4.36 m 2 /g) and total pore volume (3.13 × 10 −2 cm 3 /g). In contrast, suspended-sch had a spiny structure (similar in appearance to a hedgehog), and a larger specific surface area (9.62 m 2 /g) and total pore volume (8.01 × 10 −2 cm 3 /g). When 0.25 g/L of adhered-sch was used as an adsorbent for arsenic(III) removal from 1 mg/L arsenic(III)-bearing waters (at pH 7.5), the arsenic(III) removal efficiency was 43.2% after 4 h of adsorption. However, this efficiency could be increased by 50% by using suspended-sch as the adsorbent. Furthermore, by adding 13.3 g/L and 26.7 g/L additional schwertmannite into the reactor system prior to schwertmannite bio-synthesis, all synthesized schwertmannite remained suspended in the bio-synthesis systems, and the ferrous ions' bio-oxidation efficiency was improved to a certain extent. Due to the friction effect between the introduced schwertmannite and the reactor wall, adhered-sch was eliminated. The outcomes of this study will provide the necessary data for schwertmannite bio-synthesis and arsenic(III) removal from arsenic(III)-bearing groundwater.

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Geochemistry of redox-sensitive elements and sulfur isotopes in the high arsenic groundwater system of Datong Basin, China

Cited by 125 publications

References 63 publications

Principal component analysis of fluoride geochemistry of groundwater in Shanxi and Inner Mongolia, China

Principal component analysis of fluoride geochemistry of groundwater in Shanxi and Inner Mongolia, China

Predicting the risk of arsenic contaminated groundwater in Shanxi Province, Northern China

Schwertmannite Adherence to the Reactor Wall during the Bio-Synthesis Process and Deterioration of Its Structural Characteristics and Arsenic(III) Removal Efficiency

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