Scenario, perspectives and mechanism of arsenic and fluoride Co-occurrence in the groundwater: A review

Kumar, Manish; Goswami, Ritusmita; Patel, Arbind Kumar; Srivastava, Medhavi; Das, Nani Gopal

doi:10.1016/j.chemosphere.2020.126126

Cited by 170 publications

(42 citation statements)

References 141 publications

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“…Figure 14 presents the relationship between the WQI and arsenic in the present study. of 27 ment of As-F in the aquifer system [74][75][76]. In this study, there is a correlation between these elements: in 2005, for arsenic and fluoride, mixed flow presented the highest correlation coefficient of all of the flows at 0.8004; on the other hand, the highest correlation coefficient in 2015 was for regional flow at 0.7135.…”

Section: Bivariate Data Analysismentioning

confidence: 48%

“…The key influencers of the strength of the co-occurrence are seasonality, environment, and climatic conditions. Moreover, existing primary ion and dissolved organic matter also affect the release and enrichment of As-F in the aquifer system [74][75][76]. In this study, there is a correlation between these elements: in 2005, for arsenic and fluoride, mixed flow presented the highest correlation coefficient of all of the flows at 0.8004; on the other hand, the highest correlation coefficient in 2015 was for regional flow at 0.7135.…”

Section: Bivariate Data Analysismentioning

confidence: 53%

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Evaluation of Groundwater Quality for Human Consumption and Irrigation in Relation to Arsenic Concentration in Flow Systems in a Semi-Arid Mexican Region

Ortiz-Letechipia

Gonzalez-Trinidad

Júnez-Ferreira

et al. 2021

IJERPH

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The supply of drinking water to the population is an important challenge facing humanity, since both surface and underground sources present a great variability of water storage with respect to space and time. This problem is further aggravated in arid and semi-arid areas where rainfall is low and torrential, which makes groundwater the main source of supply; therefore, it is necessary to carry out studies that allow evaluating the evolution of the quantity and quality of water. This study addresses the behavior of groundwater in a semi-arid region, considering the theory of flow systems to identify movement as well as water quality, es determined by a water quality index (WQI), calculated considering arsenic and fluorine. In addition, a quality irrigation classification is used, employing the norms in accordance with international standards and the Mexican Norm, which allows for a comparison. Local, regional, intermediate and mixed flow systems are identified, and the evolution of cations and anions in addition to temperature is examined. It is observed that the drinking water quality index classifies them as excellent in most of the monitored wells (<50), but with a negative evolution. Regarding irrigation, most of the water samples are classified without restriction for the establishment of any type II crop (C2S1) and with restrictions for horticultural crops. It is observed that arsenic had values between 0.49 and 61.40 (µg/L) in 2005, while in 2015 they were between 0.10 and 241.30 (µg/L). In addition, fluoride presented values between 0.00 and 2.6 (mg/L) in 2005, while in 2015 they were between 0.28 and 5.40 (mg/L). The correlations between arsenic and fluorine are noted as well as WQI and SAR. A finding in this research was to include arsenic and fluorine in the calculation of the WQI allowing a better interpretation of the quality of water for both human consumption and for agricultural use to based on this make the best decision to control any harmful effects for the population, in addition to identifying the appropriate purification treatment required to control pollutants. It is concluded that arsenic is an element of utmost importance when considering water quality, so it is necessary to examine its evolution and continue to monitor its levels constantly.

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Section: Bivariate Data Analysismentioning

confidence: 48%

Section: Bivariate Data Analysismentioning

confidence: 53%

Evaluation of Groundwater Quality for Human Consumption and Irrigation in Relation to Arsenic Concentration in Flow Systems in a Semi-Arid Mexican Region

Ortiz-Letechipia

Gonzalez-Trinidad

Júnez-Ferreira

et al. 2021

IJERPH

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“…Higher rates of carbonate weathering are also supported by the (Ca 2+ + Mg 2+ ) vs. (SO 4 2− + HCO 3 − ) plot ( Supplementary Fig. 2) in which most of the groundwater samples plot below 1:1 line 5,23 . The relationship of Cl − with the alkaline earth elements Ca 2+ and Mg 2+ is not significant during the pre-monsoon season; however, as observed earlier in the correlation matrix, this relationship becomes much Fig.…”

Section: Levels Of Both K + and Nomentioning

confidence: 63%

Natural recharge transcends anthropogenic forcing that influences arsenic vulnerability of the quaternary alluviums of the Mid-Gangetic Plain

et al. 2020

Self Cite

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We evaluated the anthropogenic forcing and exceedance probability of arsenic vulnerability in the Quaternary Alluviums of the Mid-Gangetic Plain through the coupled application of hydrogeochemical analyses, inverse modelling, probability analyses, kriging, bivariate and multivariate statistical analysis (MVA). Fifty-seven groundwater samples (total 171) each were collected during the pre-monsoon (April 2015), monsoon (July 2015) and post-monsoon (January 2016). Seasonal cyclicity of ion exchange and reverse ion exchange was observed, with the former being common during pre-monsoon while the latter was dominant during post-monsoon. PHREEQC modelling showed the involvement of the agrochemicals such as calcium nitrate and calcium phosphate and other isolated incidences of chemical usage like bleaching powder as well as the probability of wet deposition of the anions like SO42− and NO3−. Kriging-based arsenic mapping revealed that rainfall recharge-led dilution plays the most dominant role in its mobilization. Owing to natural recharge in the alluvium plain, the exceedance probability of arsenic concentration above 5 μg L−1 falls drastically from more than 0.8 in the pre-monsoon to 0.5 during the post-monsoon. Study implies that pre-monsoon pumping of groundwater must be regulated in combination with proper disposal of pH and ORP affecting chemicals so that the high natural recharge should not significantly induce arsenic mobilization. Further, we recommend that vulnerability estimation should not be based solely on the present scenarios but must include the features of probable exceedance and saturation status of groundwater in this belt. We put forward a comprehensive model to explain the operative processes governing arsenic mobilization.

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“…The TIS values were found to be equal to 16.1 meq/L and 7.1 meq/L for Pc and Bg, respectively. The chemical compositions of the studied samples can be attributed to their origin from relatively deep aquifers and comparatively long water-rock interaction times [40]. Complete geochemical characterization is useful for the proper choice of the materials and operating conditions to be applied in the subsequent membrane treatment.…”

Section: Water Characterization Before Membrane Treatment Testsmentioning

confidence: 99%

Fluoride Polluted Groundwaters in Calabria Region (Southern Italy): Natural Source and Remediation

Fuoco

Apollaro

Criscuoli

et al. 2021

Water

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Excessive ingestion of fluoride through the consumption of F−-rich drinking water could cause adverse effects to human health. For this reason, the WHO has fixed 1.5 mg/L as the maximum F- concentration for drinking water. In this work, a detailed geochemical characterization was performed to define the source of natural pollution of two groundwaters (samples Pc and Bg) coming from deep crystalline aquifers located in the Calabria region (southern Italy) and to define and optimize the most appropriate water treatment strategy. The samples were classified as a F− enriched NaHCO3 type of water. In particular, the F− concentrations observed were 30 mg/L and 8.9 mg/L for the Pc and Bg samples, respectively. Based on the acquired geochemical characterization knowledge, the groundwaters were treated by two thin-film composite NF membranes, namely SPR 10113 and SPR 10114 which have so far not been used for water defluoridation. It was found that the SPR 10114 membrane was able to guarantee water permeates with F− contents lower than the threshold value of 1.5 mg/L for both treated waters, whereas the fluoride content remained above the threshold value when the Pc sample was treated using the SPR 10113 membrane. The obtained permeates were characterized by a low ionic load and were not suitable for long-term consumption as drinking water. However, all of the produced waters did not need any further re-mineralizing processes for agricultural irrigation or other purposes.

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Scenario, perspectives and mechanism of arsenic and fluoride Co-occurrence in the groundwater: A review

Cited by 170 publications

References 141 publications

Evaluation of Groundwater Quality for Human Consumption and Irrigation in Relation to Arsenic Concentration in Flow Systems in a Semi-Arid Mexican Region

Evaluation of Groundwater Quality for Human Consumption and Irrigation in Relation to Arsenic Concentration in Flow Systems in a Semi-Arid Mexican Region

Natural recharge transcends anthropogenic forcing that influences arsenic vulnerability of the quaternary alluviums of the Mid-Gangetic Plain

Fluoride Polluted Groundwaters in Calabria Region (Southern Italy): Natural Source and Remediation

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