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Methods for selenium removal from contaminated waters: a review

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Abstract

Worldwide contamination of waters by metals, metalloids, and organometallic pollutants is a major health issue. In particular, the occurrence of the selenium metalloid at rather high concentrations in the environment, especially in the water compartment, is of increasing concern, notably in develo** countries. Selenium is difficult to remove from groundwater and industrial effluents because selenium is often present in complex polycontaminated mixtures, thus inducing competition issues with other anions. Moreover, the efficiency of remediation methods depends on selenium speciation and water parameters, e.g. pH and concentration of competing anions. Here, we review methods for selenium removal from water, wastewater, and industrial effluents. Technologies are based on zero-valent iron, iron-oxy-hydroxides, supported materials, nanofiltration, reverse osmosis, chitosan-enhanced ultrafiltration, electrodialysis, and activated granular sludge.

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Adapted from Shrimpton et al. (2015)

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Source: Youssef-Amine Boussouga, Eggenstein-Leopoldshafen, Germany

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adapted from Malhotra et al. (2020): Se(VI) 1600 µg/L and pH 8; B) is adapted from Chung et al. (2010): S(VI) 326 μg/L, pH 7.2 and pressure 8 bar

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modified by adding HCl and NaOH. Adapted from Onorato et al. (2017)

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Adapted from Zhang et al. 2019

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Acknowledgements

Nadia Morin-Crini and Grégorio Crini (Besançon, France) thanks the FEDER (Fonds Européen de Développment Régional) for its financial support (NIRHOFEX Program: “Innovative materials for wastewater treatment”) and the Université de Franche-Comté for the research grant awarded to Guest Professor Corina Bradu.

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Correspondence to Eric Lichtfouse or Grégorio Crini.

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Lichtfouse, E., Morin-Crini, N., Bradu, C. et al. Methods for selenium removal from contaminated waters: a review. Environ Chem Lett 20, 2019–2041 (2022). https://doi.org/10.1007/s10311-022-01419-8

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  • DOI: https://doi.org/10.1007/s10311-022-01419-8

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