Hydrogeochemistry and groundwater quality assessment of high fluoride levels in the Yanchi endorheic region, northwest China

Wu, Chu; Wu, Xiong; Cheng, Qian; Zhu, Ge

doi:10.1016/j.apgeochem.2018.10.016

Cited by 137 publications

(50 citation statements)

References 33 publications

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“…This was demonstrated in the plain and mountain front of Inner Mongolia, where pH and concentrations of HCO 3 − , δ 18 O, δD, and total dissolved solids (TDS) were all higher in high-fluorine groundwater collected in the plain than those in the mountain front (Li et al 2018). Similar findings were reported from inland river basins in Yanchi, Ningxia (Wu et al 2018). Piper trilinear diagrams were used to indicate the groundwater facies are basically identical in different seasons, and hydrochemical facies are of the Na-Cl type and Na-SO 4 -Cl type, while Gibbs diagrams illustrated that groundwaters reside in evaporation-dominant areas, highlighting the crucial role of evaporation in the chemistry of groundwater (Wu et al 2018).…”

Section: Introductionsupporting

confidence: 69%

“…Similar findings were reported from inland river basins in Yanchi, Ningxia (Wu et al 2018). Piper trilinear diagrams were used to indicate the groundwater facies are basically identical in different seasons, and hydrochemical facies are of the Na-Cl type and Na-SO 4 -Cl type, while Gibbs diagrams illustrated that groundwaters reside in evaporation-dominant areas, highlighting the crucial role of evaporation in the chemistry of groundwater (Wu et al 2018).…”

Section: Introductionsupporting

confidence: 61%

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Spatial distribution of endemic fluorosis caused by drinking water in a high-fluorine area in Ningxia, China

Ming-ji

Xiang-ning

Miao

et al. 2020

Environ Sci Pollut Res

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Endemic fluorosis is widespread in China, especially in the arid and semi-arid areas of northwest China, where endemic fluorosis caused by consumption of drinking water high in fluorine content is very common. We analyzed data on endemic fluorosis collected in Ningxia, a typical high-fluorine area in the north of China. Fluorosis cases were identified in 539 villages in 1981, in 4449 villages in 2010, and in 3269 villages in 2017. These were located in 19 administrative counties. In 2017, a total of 1.07 million individuals suffered from fluorosis in Ningxia, with more children suffering from dental fluorosis and skeletal fluorosis. Among Qingshuihe River basin disease areas, the high incidence of endemic fluorosis is in Yuanzhou District and Xiji County of Guyuan City. The paper holds that the genesis of the high incidence of endemic fluorosis in Qingshui River basin is mainly caused by chemical weathering, evaporation and concentration, and dissolution of fluorine-containing rocks around the basin, which is also closely related to the semi-arid geographical region background, basin structure, groundwater chemical characteristics, and climatic conditions of the basin. The process of mutual recharge and transformation between Qingshui River and shallow groundwater in the basin is intense. There is a close coupling relationship between the power of central and southern Ningxia disease areas and Qingshui River watershed of excess fluorine water. Because the traditional drinking water source of the residents in the basin is shallow groundwater, the underground water is the main cause of the high incidence of endemic fluorosis. The results show that Xiji County and Yuanzhou District were the areas of high incidence of endemic fluorosis which gradually decreased to the middle and lower reaches of Qingshui River. In space, distribution characteristics are Qingshui River source area > Qingshui River valley basin area, tributary area > trunk stream area, upstream area > middle reaches area> downstream area of Qingshui River. This is relatively consistent with the spatial distribution of fluoride ion content in Qingshui River groundwater.

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Section: Introductionsupporting

confidence: 69%

Section: Introductionsupporting

confidence: 61%

Spatial distribution of endemic fluorosis caused by drinking water in a high-fluorine area in Ningxia, China

Ming-ji

Xiang-ning

Miao

et al. 2020

Environ Sci Pollut Res

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“…To achieve this goal, it is necessary to understand the origins and hydrochemistry of water. These two, seemingly simple aspects are at the center of many worldwide principal, social, and environmental programs [7,8].Evaluation of the hydrogeochemical characteristics and the suitability of groundwater for different uses has been extensively researched around the world [7][8][9][10][11][12]. These studies indicate that the hydrochemical composition and water quality of groundwater are influenced by natural factors (such as water-rock interactions, climate change, geological conditions, etc.)…”

mentioning

confidence: 99%

“…These studies indicate that the hydrochemical composition and water quality of groundwater are influenced by natural factors (such as water-rock interactions, climate change, geological conditions, etc.) and anthropogenic activities such as industrial, agricultural, and domestic sewage discharge [7][8][9][10][11][12]. However, anthropogenic sources have become a dominant factor affecting the groundwater environment [13,14].…”

mentioning

confidence: 99%

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Hydrogeochemical Characteristics and the Suitability of Groundwater in the Alluvial-Diluvial Plain of Southwest Shandong Province, China

Gao

Liu

Feng

et al. 2019

Water

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The alluvial-diluvial plain of southwest Shandong Province is an important agricultural economic zone and energy base in Shandong Province. Groundwater plays an extremely significant role in the development of the regional social economy. In this study, 50 sets of water samples, collected from 25 wells during October 2016 and June 2017, were utilized to determine the hydrogeochemistry and the suitability of groundwater in the alluvial-diluvial plain of southwest Shandong Province for different applications, such as drinking and irrigation. Most of the water samples could be classified as hard-fresh water or hard-brackish water, and the dominant water types were HCO 3 -Na and mixed types. Water-rock interactions and evaporation were the dominant controlling factors in the formation of the hydrochemical components in the groundwater. Dissolutions of silicate, calcite, dolomite, and gypsum are the major reactions contributing and defining the groundwater chemistry in this plain. Moreover, cation exchange is a non-negligible hydrogeochemical process in this plain. Calculated saturation index (SI) values indicate that aragonite, calcite and dolomite are saturated, while the SI values for gypsum and halite are unsaturated. Based on fuzzy comprehensive evaluation, the groundwater quality ranges from excellent to very poor. More than 50% of all groundwater samples from 2016 are categorized as poor or very poor, suggesting that the water from these wells is not suitable for drinking. According to the sodium adsorption ratio and percentage sodium, most of the samples are suitable for agricultural irrigation. Overall, the quality of the groundwater in 2017 was found to be better than in 2016. Therefore, in order to ensure access to clean water for the growing population, one needs to protect and utilize water resources carefully and sensibly. To achieve this goal, it is necessary to understand the origins and hydrochemistry of water. These two, seemingly simple aspects are at the center of many worldwide principal, social, and environmental programs [7,8].Evaluation of the hydrogeochemical characteristics and the suitability of groundwater for different uses has been extensively researched around the world [7][8][9][10][11][12]. These studies indicate that the hydrochemical composition and water quality of groundwater are influenced by natural factors (such as water-rock interactions, climate change, geological conditions, etc.) and anthropogenic activities such as industrial, agricultural, and domestic sewage discharge [7][8][9][10][11][12]. However, anthropogenic sources have become a dominant factor affecting the groundwater environment [13,14]. In previous studies, hydrochemical methods, such as Gibbs diagrams, Piper trilinear graphs, saturation index (SI), and ion ratio graphs, have commonly been used to determine which hydrogeochemical processes are occurring and the controlling factors in these processes [15][16][17][18]. Fuzzy comprehensive evaluation (FCE), sodium adsorption ratio (SAR), and percentage sodium (% Na...

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Fluoride retention kinetic and equilibrium studies on layered double hydroxides under ambient conditions: Implications on pond–stream–hot spring–well water remediation

Mahajan

Paikaray

2022

Water Environment Research

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Fluoride deficiency and toxicity severely affect a large population globally. Hence, a low‐cost geosorbent is in demand to overcome fluorosis hazards where in situ retardation is prioritized over pilot‐scale waste water treatment. This study reports the fluoride removal potential of MgFe‐type layered double hydroxide (HT‐LDH) and its calcined form at 500 and 800°C for their usability for treatment of polluted streams, ponds, wells, and hot spring water. Rapid uptake with >33% removal in 24 h was found by the adsorptive method, whereas the co‐precipitation process removed >16 mg/L (>83%) in 1 h. The efficiency was further enhanced upon calcination at 500°C with >95% removal up to five times regeneration, unlike that at 800°C. It was demonstrated that multilayer sorption onto heterogeneous surface sites is majorly controlled by surface adsorptive and ion exchange mechanisms. Acidic pH, low aqueous F−, and temperature >25°C favored greater uptake, whereas competitive anions slightly enhanced its potential in the order normalNO3−>normalSO42−>normalPO43− in adsorptive removal. In the co‐precipitation process, competing anions slightly hindered F− retention, whereas high temperature and low aqueous F− led to greater F− retention. No F‐bearing solid phases were evidenced upon its retention, except lowering the HT‐LDH crystallinity and rearrangement of normalCO32− surface functional groups. The fluoride contents of natural water were lowered drastically up to 77% in 60 min upon precipitation of HT‐LDH by maintaining alkalinity and a di‐/trivalent cationic ratio of 2.0. Practitioner Points F^− uptake is rapid on heterogeneous surface sites with multilayer sorption mechanism Greater F^− removed by coprecipitation technique compared with adsorptive pathway Acidic medium and temperature >25°C favor greater F^− retention NO_3^−+PO_l4^(3−) slightly enhanced F^− uptake by adsorption but lowered in coprecipitation Formation of LDH from natural waters lowered F^− content up to <77%

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Hydrogeochemistry and groundwater quality assessment of high fluoride levels in the Yanchi endorheic region, northwest China

Cited by 137 publications

References 33 publications

Spatial distribution of endemic fluorosis caused by drinking water in a high-fluorine area in Ningxia, China

Spatial distribution of endemic fluorosis caused by drinking water in a high-fluorine area in Ningxia, China

Hydrogeochemical Characteristics and the Suitability of Groundwater in the Alluvial-Diluvial Plain of Southwest Shandong Province, China

Fluoride retention kinetic and equilibrium studies on layered double hydroxides under ambient conditions: Implications on pond–stream–hot spring–well water remediation

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