Review of arsenic contamination, exposure through water and food and low cost mitigation options for rural areas

Sharma, Anitha Kumari; Tjell, Jens Christian; Sloth, Jens Jørgen; Holm, Peter E.

doi:10.1016/j.apgeochem.2013.11.012

Cited by 162 publications

(97 citation statements)

References 231 publications

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“…When grain size increases, As concentration increases (Zavala and Duxbury, 2008). Findings related to color showed that As concentration is 0.196 ± 0.111 mg kg -1 in brown rice, 0.127 ± 0.087 mg kg -1 in white rice, and 0.07 ± 0.05 mg kg -1 for other colors (Zavala and Duxbury, 2008;Sharma et al, 2014). The highest amount of As is in brown rice because its outer layers have a higher content of the metalloid.…”

Section: Factors Influencing Arsenic Absorption In the Rice Plantmentioning

confidence: 99%

Arsenic translocation in rice cultivation and its implication for human health

Bastías-Montes¹,

Beldarraín²

2016

Chilean J. Agric. Res.

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Section: Factors Influencing Arsenic Absorption In the Rice Plantmentioning

confidence: 99%

Arsenic translocation in rice cultivation and its implication for human health

Bastías-Montes¹,

Beldarraín²

2016

Chilean J. Agric. Res.

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“…There are recent reviews that deals with environmental origin, occurrence of arsenic and also with relevant technical and societal options employed for mitigation, relieving and preventing high human exposure of this metalloid trough water and food in different regions of the world (Bundschuh et al 2012;He and Charlet 2013;Mondal et al 2013;Sharma et al 2014;Rahman et al 2014). Chronic exposures, mainly by ingestion of contaminated water, lead to a variety of health effects.…”

Section: Introductionmentioning

confidence: 98%

Arsenic removal from water employing a combined system: photooxidation and adsorption

Lescano

Zalazar

Brandi

2014

Environ Sci Pollut Res

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A combined system employing photochemical oxidation (UV/H2O2) and adsorption for arsenic removal from water was designed and evaluated. In this work, a bench-scale photochemical annular reactor was developed being connected alternately to a pair of adsorption columns filled with titanium dioxide (TiO2) and granular ferric hydroxide (GFH). The experiences were performed by varying the relation of As concentration (As (III)/As (V) weight ratio) at constant hydrogen peroxide concentration and incident radiation. Experimental oxidation results were compared with theoretical predictions using an intrinsic kinetic model previously obtained. In addition, the effectiveness of the process was evaluated using a groundwater sample. The mathematical model of the entire system was developed. It could be used as an effective tool for the design and prediction of the behaviour of these types of systems. The combined technology is efficient and promising for arsenic removal to small and medium scale.

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“…Several reports on the existence of increased levels of arsenic in groundwater have been made in different countries [4] . Arsenic removal depends highly on the composition and chemistry of the polluted water [8] . There are three main methods for arsenic removal from drinking water, including membrane filtration, coagulationprecipitation and adsorption [9] .…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Arsenic from Aqueous Solutions by Iron Filings and the Effect of Magnetic Field

Miranzadeh¹,

Naderi²,

Akbari³

et al. 2016

IAHS

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[1] Arsenic removal from water/wastewater using adsorbents-a critical review Aims Arsenic contamination of natural water resources has become an important environmental problem in the world. The adsorption method by iron filings adsorbent or zero-valent iron was used. The study aimed to evaluate the efficiency of iron filings in arsenite removal from polluted water and to investigate the effect of magnetic field on the process. Materials & Methods This interventional study was conducted in synthetically polluted water samples with certain arsenic concentrations. With regard to the initial arsenic concentration (0.5 and 2mg/l), iron filings dosages (0, 2.5 and 5g/l), contact times (5, 10 and 15min) and considering the samples before and after magnetic column, 108 samples were prepared. Data was analyzed by paired sample T and one-way ANOVA tests. Findings The highest mean of removal efficiency at the initial arsenic concentration of 0.5mg/l was seen at the iron filings of 5g/l and 10min contact time (87.7±10.0) and at the initial arsenic concentration of 2mg/l was seen at the iron filings of 5g/l and 15min contact time (86.3±8.4). At the initial arsenic concentration of 0.5mg/l, magnetic field increased the removal efficiency of arsenite at the iron filings dosage of 0g/l and decreased it at the iron filings dosage of 5g/l. The same happened at the initial arsenic concentration of 2mg/l. Conclusion Arsenic is reduced from the water samples with the iron filings dosage of 5g/l at natural pH. Magnetic field increases the arsenic removal efficiency in the absence of the iron filings and decreases the arsenic removal efficiency in the presence of the iron filings.

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Review of arsenic contamination, exposure through water and food and low cost mitigation options for rural areas

Cited by 162 publications

References 231 publications

Arsenic translocation in rice cultivation and its implication for human health

Arsenic translocation in rice cultivation and its implication for human health

Arsenic removal from water employing a combined system: photooxidation and adsorption

Adsorption of Arsenic from Aqueous Solutions by Iron Filings and the Effect of Magnetic Field

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