Arsenotrophy: A pragmatic approach for arsenic bioremediation

Anand, Vandana; Kaur, Jasvinder; Srivastava, Sonal; Bist, Vidisha; Singh, Pallavi; Srivastava, Suchi

doi:10.1016/j.jece.2022.107528

Cited by 18 publications

(4 citation statements)

References 188 publications

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“…5,6 The harmful effects of arsenic have been widely recognized, and it has been classified as a group I carcinogen by the World Health Organization (WHO). 7 Arsenic exposure has been associated with an increased risk of cancer in various systems of the body, including the respiratory, cardiovascular, skin, neurological, and reproductive systems. 8 In biosystems, inorganic forms of arsenic, specifically As( iii ) and As( v ), are predominant.…”

Section: Introductionmentioning

confidence: 99%

Preparation of arsenic(iii) monoclonal antibodies and preliminary evaluation of a novel silver-coated gold nanorod SERS immunoassay strip construction

Liang,

Li,

et al. 2023

Anal. Methods

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Section: Introductionmentioning

confidence: 99%

Preparation of arsenic(iii) monoclonal antibodies and preliminary evaluation of a novel silver-coated gold nanorod SERS immunoassay strip construction

Liang,

Li,

et al. 2023

Anal. Methods

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“…This is especially relevant for crops like maize (Zea mays L.), which is the most widely grown cereal in the world (with an annual production of more than one billion tons (Rosas-Castor et al 2014)). However, plant-microbe interactions are known to mitigate As toxicity (Anand et al 2022;Raturi et al 2023), but the relative contributions of plant and microbial mechanisms in the As speciation and release to soil water and soil remain largely unknown. Based on these considerations we conducted an experiment growing maize on a soil with three different As concentration levels (0, 100 and 200 mg kg −1 As added) and three different levels of microbial disturbance (natural, sterilized but reconditioned with the indigenous microbiome, sterilized).…”

Section: Introductionmentioning

confidence: 99%

The Effects of Soil Microbial Disturbance and Plants on Arsenic Concentrations and Speciation in Soil Water and Soils

Guan,

Caggìa,

Gómez-Chamorro

et al. 2023

Expo Health

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Arsenic (As) in soils harms soil organisms and plants, and it can enter the human food chain via the dietary consumption of crops. The mobility, bioavailability and toxicity of As are determined by its concentration and speciation. A greenhouse pot experiment was conducted to study the effects of soil microbial disturbance and maize plants on arsenic concentration and speciation in soil (pore) water and soils. Three soil treatments with varying microbial disturbance were designed for this experiment: native soil, sterilized soil and sterilized soil reconditioned with soil indigenous microbes. The three soil treatments were intersected with three levels of As in soils (0, 100 and 200 mg kg−1 spiked As). Ten pots of each treatment were planted with maize, while three pots were filled with soil without maize. The difference between native and reconditioned soil indicated the abiotic sterilization effect (artifact of the sterilization process), while the difference between sterilized and reconditioned soil showed the microbial disturbance effect. Both effects increased As release into soil water. The microbial disturbance effect was more pronounced for organic As species, showing the influence of soil microbes involved in As methylation. The abiotic sterilization effect was more evident in unplanted pots than planted pots and the microbial disturbance effect was observed only in unplanted pots, suggesting that both effects were mitigated by the presence of maize.

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“…Acute exposure is rare and happens mostly with exposure to arsenite (As III ) than arsenate (As V ) [4]. Long-term exposure leads to a variety of illnesses known as arsenicosis [5], which includes skin, bladder, kidney, and lung cancer, along with black foot disease [6]. As III is more toxic than As V [7] and also harder to remove from water [8].…”

Section: Introductionmentioning

confidence: 99%

Arsenite to Arsenate Oxidation and Water Disinfection via Solar Heterogeneous Photocatalysis: A Kinetic and Statistical Approach

Silerio-Vázquez

Núñez-Núñez

Proal-Nájera

et al. 2022

Water

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Arsenic (As) poses a threat to human health. In 2014, more than 200 million people faced arsenic exposure through drinking water, as estimated by the World Health Organization. Additionally, it is estimated that drinking water with proper microbiological quality is unavailable for more than 1 billion people. The present work analyzed a solar heterogeneous photocatalytic (HP) process for arsenite (AsIII) oxidation and coliform disinfection from a real groundwater matrix employing two reactors, a flat plate reactor (FPR) and a compound parabolic collector (CPC), with and without added hydrogen peroxide (H2O2). The pseudo first-order reaction model fitted well to the As oxidation data. The treatments FPR–HP + H2O2 and CPC–HP + H2O2 yielded the best oxidation rates, which were over 90%. These treatments also exhibited the highest reaction rate constants, 6.7 × 10−3 min−1 and 6.8 × 10−3 min−1, respectively. The arsenic removal rates via chemical precipitation reached 98.6% and 98.7% for these treatments. Additionally, no coliforms were detected at the end of the process. The collector area per order (ACO) for HP treatments was on average 75% more efficient than photooxidation (PO) treatments. The effects of the process independent variables, H2O2 addition, and light irradiation were statistically significant for the AsIII oxidation reaction rate (p < 0.05).

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Arsenotrophy: A pragmatic approach for arsenic bioremediation

Cited by 18 publications

References 188 publications

Preparation of arsenic(iii) monoclonal antibodies and preliminary evaluation of a novel silver-coated gold nanorod SERS immunoassay strip construction

Preparation of arsenic(iii) monoclonal antibodies and preliminary evaluation of a novel silver-coated gold nanorod SERS immunoassay strip construction

The Effects of Soil Microbial Disturbance and Plants on Arsenic Concentrations and Speciation in Soil Water and Soils

Arsenite to Arsenate Oxidation and Water Disinfection via Solar Heterogeneous Photocatalysis: A Kinetic and Statistical Approach

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