Dissolved Arsenic in Groundwater Bodies: A Short Review of Remediation Technologies

Jyothi, M.S.; Gayathri, S.; Gandhi, T. Pushparaj; Maliyekkal, Shihabudheen M.

doi:10.1007/978-981-16-0858-2_5

Cited by 2 publications

(1 citation statement)

References 165 publications

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“…Arsenic (As) is a major water pollutant affecting over 94 to 220 million people, according to a recent study on global groundwater arsenic prediction . It is naturally present in minerals (e.g., realgar, arsenopyrite, and orpiment) and ores from where it percolates into the water due to processes such as weathering and erosion. It is also released into the environment through volcanic activities .…”

Section: Introductionmentioning

confidence: 99%

Human Skin-Cell-Based Sensor for Environmental Arsenic Detection and for Creating Social Awareness

Gupte

Pandurangan

Islam

et al. 2022

ACS Sustainable Chem. Eng.

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Arsenic (As) toxicity is a significant threat to global public health. Moreover, the lacks of social awareness and understanding of the impact of As in affected communities are also of concern. Therefore, subppm level detection of As in environmental waters and associated public awareness are crucial for remediation programs. We developed a sustainable As sensing methodology by merging the fundamental concepts of As cytotoxicity with an alternative approach for selectivity. A cellular platform was prepared on an electrospun scaffold using As-sensitive keratinocyte cells. Arsenic-induced reactive oxygen species (ROS) were quantified using a fluorimetric probe, 2′,7′-dichlorofluorescin diacetate, commonly used to detect oxidative stress within cells. Experiments were conducted with a mixture of arsenite and arsenate, the predominant forms of As present in natural conditions, in a 1:1 ratio. We also quantified unknown As concentrations in real water samples. The selectivity to As was achieved by exposing the contaminated water composed of several ions to an As adsorbing material, namely, confined metastable 2-line ferrihydrite (CM2LF). An adsorption–desorption protocol enabled As extraction in field conditions. The ROS resulting from cells’ responses to the As extract were used as the signature of As concentration. The sensor could precisely quantify even 5 ppb of As in tap water, and the theoretical limit of detection (LOD) was 2.7 ppb. A sustainable device using the cellular platform is proposed for As detection in field conditions that can also be used for social awareness, demonstrating the impact of As on human biology in affected regions.

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Section: Introductionmentioning

confidence: 99%

Human Skin-Cell-Based Sensor for Environmental Arsenic Detection and for Creating Social Awareness

Gupte

Pandurangan

Islam

et al. 2022

ACS Sustainable Chem. Eng.

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Development of Efficient and Recyclable ZnO–CuO/g–C3N4 Nanocomposite for Enhanced Adsorption of Arsenic from Wastewater

et al. 2022

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Arsenic (III) is a toxic contaminant in water bodies, especially in drinking water reservoirs, and it is a great challenge to remove it from wastewater. For the successful extraction of arsenic (III), a nanocomposite material (ZnO–CuO/g–C3N4) has been synthesized by using the solution method. The large surface area and plenty of hydroxyl groups on the nanocomposite surface offer an ideal platform for the adsorption of arsenic (III) from water. Specifically, the reduction process involves a transformation from arsenic (III) to arsenic (V), which is favorable for the attachment to the –OH group. The modified surface and purity of the nanocomposite were characterized by SEM, EDX, XRD, FT–IR, HRTEM, and BET models. Furthermore, the impact of various aspects (temperatures, pH of the medium, the concentration of adsorbing materials) on adsorption capacity has been studied. The prepared sample displays the maximum adsorption capacity of arsenic (III) to be 98% at pH ~ 3 of the medium. Notably, the adsorption mechanism of arsenic species on the surface of ZnO–CuO/g–C3N4 nanocomposite at different pH values was explained by surface complexation and structural variations. Moreover, the recycling experiment and reusability of the adsorbent indicate that a synthesized nanocomposite has much better adsorption efficiency than other adsorbents. It is concluded that the ZnO–CuO/g–C3N4 nanocomposite can be a potential candidate for the enhanced removal of arsenic from water reservoirs.

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Dissolved Arsenic in Groundwater Bodies: A Short Review of Remediation Technologies

Cited by 2 publications

References 165 publications

Human Skin-Cell-Based Sensor for Environmental Arsenic Detection and for Creating Social Awareness

Human Skin-Cell-Based Sensor for Environmental Arsenic Detection and for Creating Social Awareness

Development of Efficient and Recyclable ZnO–CuO/g–C3N4 Nanocomposite for Enhanced Adsorption of Arsenic from Wastewater

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