Hydrogeochemistry and arsenic contamination of groundwater in the Ganges Delta Plain, Bangladesh

Halim, Mohammad A.; Majumder, Ratan Kumar; Nessa, Syeda Afsarun; Hiroshiro, Yoshinari; Uddin, Jasim; Shimada, Jun; Jinno, Kenji

doi:10.1016/j.jhazmat.2008.09.046

Cited by 106 publications

(51 citation statements)

References 39 publications

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“…The simulated model considered the pure inorganic adsorption reaction, which did not include the desorption enhanced by the microbial reaction and thus greatly underestimated the amount of arsenic desorption. For sulfate and chloride, the effects on the amount of arsenic desorption are minor, which agree with the batch experimental results (Su and Pulse, 2001;Radu et al, 2005;Halim et al, 2009;Maji et al, 2013).…”

Section: Numerical Modeling Of As Desorption Experimentssupporting

confidence: 87%

“…A moderate correlation of aqueous As was only observed with DOC (r 2 = 0.41, p < 0.05), as also indicated by Harvey et al (2002). The existence of organic carbon can trigger microbial activity, followed by the formation of reducing conditions and release of As via chemical and biological processes in the subsurface formation (Harvey et al, 2002;Sutton et al, 2009;Halim et al, 2009). Accordingly, these characteristics were consistent with the microbially mediated release of As via the reductive dissolution of iron oxyhydroxides (Nickson et al, 2000;McArthur et al, 2001;Harvey et al, 2002;Rowland et al, 2008;Hasan et al, 2009;Nath et al, 2009).…”

Section: Water Quality Related To As Enrichmentmentioning

confidence: 81%

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Identifying sources and controlling factors of arsenic release in saline groundwater aquifers

Liu

Kao

et al. 2014

Hydrol. Earth Syst. Sci.

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Abstract. An integrated hydrogeochemical study was carried out to realize the occurrence of arsenic (As) in a saline aquifer. Saline groundwater was mostly concentrated in the uppermost aquifer, and non-saline water was in the lower aquifer in the study area. High As concentrations were found in both the uppermost and lower aquifers. No correlation among salinity, well depth and As concentration was observed. Various forms of Fe oxyhydroxides were identified in the magnetic fractions, which were concentrated by high gradient magnetic separation (HGMS) technique, revealing that the redox cycling of Fe occurred in the subsurface. High levels of Fe, HCO − 3 , DOC and NH + 4 concentrations accompanying alkaline pH in the As-rich groundwater were consistent with the mechanism triggered by the microbially mediated reductive dissolution of Fe oxyhydroxides. A proposed threshold value of 50 µg L −1 As concentration was used as an indicator for identification of active proceeding reductive dissolution of As-bearing Fe oxyhydroxides in the saline aquifer. Desorption behaviors of As were relevant to its valence in the sediments and the co-existence of anions. Experimental and numerical results showed that additions of Cl − and SO 2− 4 , which represent the main anions of saline water, had minor effect on leaching sedimentary As. Although bicarbonate addition resulted in less As desorption than that of phosphate on a molar basis, the contribution of bicarbonate to the total release of As was greater than phosphate due to the much higher concentration of bicarbonate in shallow groundwater and the associated microbial mediation. Collectively, the chemical effect of saline water on the As release to groundwater is mild in the coastal aquifer.

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Section: Numerical Modeling Of As Desorption Experimentssupporting

confidence: 87%

Section: Water Quality Related To As Enrichmentmentioning

confidence: 81%

Identifying sources and controlling factors of arsenic release in saline groundwater aquifers

Liu

Kao

et al. 2014

Hydrol. Earth Syst. Sci.

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“…In recent years various studies have highlighted that countries such as Argentina, Bangladesh and Chile were experiencing high total concentrations of natural and anthropogenic (man-made) arsenic in drinking water from newly identified sources (Halim et al 2009;Bhattacharya et al 2006;Oyarzun et al 2004;Ng et al 2003;. The most common sources of arsenic in the natural environment are volcanic rocks (specifically their weathering products and ash), marine sedimentary rocks, hydrothermal ore deposits and associated geothermal waters, and fossil fuels, including coals and petroleum (Wang and Mulligan 2006;Smedley and Kinniburgh 2002).…”

Section: Introductionmentioning

confidence: 99%

Arsenic contamination of natural waters in San Juan and La Pampa, Argentina

O'Reilly

Watts

Shaw

et al. 2010

Environ Geochem Health

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Arsenic (As) speciation in surface and groundwater from two provinces in Argentina (San Juan and La Pampa) was investigated using solid phase extraction (SPE) cartridge methodology with comparison to total arsenic concentrations. A third province, Río Negro, was used as a control to the study. Strong cation exchange (SCX) and strong anion exchange (SAX) cartridges were utilised in series for the separation and preservation of arsenite (As ). Samples were collected from a range of water outlets (rivers/streams, wells, untreated domestic taps, well water treatment works) to assess the relationship between total arsenic and arsenic species, water type and water parameters (pH, conductivity and total dissolved solids, TDS). Analysis of the waters for arsenic (total and species) was performed by inductively coupled plasma mass spectrometry (ICP-MS) in collision cell mode. Total arsenic concentrations in the surface and groundwater from Encon and the San José de Jáchal region of San Juan (north-west Argentina within the Cuyo region) ranged from 9 -357 μg l -1As. Groundwater from Eduardo Castex (EC) and Ingeniero Luiggi (LU) in La Pampa (central Argentina within the Chaco-Pampean Plain) ranged from 3 -1326 μg l -1As. The pH range for the provinces of San Juan (7.2 -9.7) and La Pampa (7.0 -9.9) are in agreement with other published literature. The highest total arsenic concentrations were found in La Pampa well waters (both rural farms and pre-treated urban sources), particularly where there was high pH (typically > 8.2), conductivity (> 2600 μS cm As. Arsenic species for both provinces were predominantly As for groundwater, respectively. This translates to a relative As III abundance of 69 -100 % of the total arsenic in surface waters and 32 -100 % in groundwater. This is unexpected because it is typically thought that in oxidising conditions (surface waters), the dominant arsenic species is As V . However, data from the SPE methodology suggests that As III is the prevalent species in San Juan, indicating a greater influence from reductive processes. La Pampa groundwater had As (equating to up to 33 % of the total arsenic). Previously published literature has focused primarily on the inorganic arsenic species, however this study highlights the potentially significant concentrations of organoarsenicals present in natural waters. The potential for separating and preserving individual arsenic species in the field to avoid transformation during transport to the laboratory, enabling an accurate assessment of in-situ arsenic speciation in water supplies is discussed.

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“…Human exposure to As and Cd by means of daily consumption in food is a concern in many areas of China, where farming and mining coexist Sun et al 2012). Arsenic, especially inorganic form, is classified as a non-threshold class 1 human carcinogen and can cause serious health problems such as skin cancer and lung, bladder, kidney, and other diseases (Bernard and Lauwerys 1986;Ng et al 2003;Halim et al 2009). Cd has been linked to diseases including lung cancer, pulmonary adenocarcinomas, prostatic proliferative lesions, bone fractures, kidney dysfunction, and hypertension (Bernard and Lauwerys 1986).…”

Section: Introductionmentioning

confidence: 99%

Mitigation of cadmium and arsenic in rice grain by applying different silicon fertilizers in contaminated fields

Wang

Wen

Chen

et al. 2015

Environ Sci Pollut Res

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A field experiment was established to support the hypothesis that application of different silicon (Si) fertilizers can simultaneously reduce cadmium (Cd) and arsenic (As) concentration in rice grain. The Bsemi-finished product of Si-potash fertilizer^treatment at the high application of 9000 kg/ha (NP+S-KSi9000) significantly reduced the As concentration in rice grain by up to 20.1 %, compared with the control. Si fertilization reduces the Cd concentration in rice considerably more than the As concentration. All Si fertilizers apart from sodium metasilicate (Na 2 SiO 3 ) exhibited a high ability to reduce Cd concentration in rice grain. The Sicalcium (CaSi) fertilizer is the most effective in the mitigation of Cd concentration in rice grain. The CaSi fertilizer applied at 9000 kg/ha (NPK+CaSi9000) and 900 kg/ha (NPK+CaSi900) reduced the Cd concentration in rice grain about 71.5 and 48.0 %, respectively, while the Si-potash fertilizer at 900 kg/ ha (NP+KSi900), the semi-finished product of Si-potash fertilizer at both 900 kg/ha (NP+S-KSi900) and 9000 kg/ha (NP+S-KSi9000), and the rice straw (NPK+RS) treatments reduced the Cd concentration in rice grain about 42, 26.5, 40.7, and 23.1 %, respectively. The results of this investigation demonstrated the potential effects of Si fertilizers in reducing Cd and As concentrations in rice grain.

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Hydrogeochemistry and arsenic contamination of groundwater in the Ganges Delta Plain, Bangladesh

Cited by 106 publications

References 39 publications

Identifying sources and controlling factors of arsenic release in saline groundwater aquifers

Identifying sources and controlling factors of arsenic release in saline groundwater aquifers

Arsenic contamination of natural waters in San Juan and La Pampa, Argentina

Mitigation of cadmium and arsenic in rice grain by applying different silicon fertilizers in contaminated fields

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