Activated Carbons for Arsenic Removal from Natural Waters and Wastewaters: A Review
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Department of Chemistry, International Hellenic University, 65404 Kavala, Greece
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Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
*
Authors to whom correspondence should be addressed.
Academic Editor: Carmen Teodosiu
Water 2021, 13(21), 2982; https://doi.org/10.3390/w13212982
Received: 14 September 2021
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Revised: 17 October 2021
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Accepted: 18 October 2021
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Published: 22 October 2021
(This article belongs to the Special Issue Innovative Technologies and Approaches for Sustainable Wastewater Treatment and Wastewater Reuse)
The arsenic pollution of waters and wastewaters is concerning many countries across the world, and because of the effects of arsenic on human health, its removal from waters is of great importance. Adsorption using functionalized activated carbons as a technique for the removal of arsenic from water streams has gained great attention. In the present review, we summarize synthesis technologies, the characterization of materials and arsenic removal capacity, and we clarify the parameters which play a critical role in the removal of arsenic, such as the pH value of the water, the active group in the functionalization and temperature. The review article concludes that most of the experimental data fit both Langmuir and Freundlich isotherms. In this review, the recyclability and reuse of the materials are also reported, and the findings show that for both arsenite and arsenate, even after several adsorption cycles, the material can be further used as an efficient adsorbent for arsenic removal.
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Keywords:
arsenic; adsorption; removal; oxidation
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MDPI and ACS Style
Meez, E.; Tolkou, A.K.; Giannakoudakis, D.A.; Katsoyiannis, I.A.; Kyzas, G.Z. Activated Carbons for Arsenic Removal from Natural Waters and Wastewaters: A Review. Water 2021, 13, 2982. https://doi.org/10.3390/w13212982
AMA Style
Meez E, Tolkou AK, Giannakoudakis DA, Katsoyiannis IA, Kyzas GZ. Activated Carbons for Arsenic Removal from Natural Waters and Wastewaters: A Review. Water. 2021; 13(21):2982. https://doi.org/10.3390/w13212982
Chicago/Turabian StyleMeez, Elie, Athanasia K. Tolkou, Dimitrios A. Giannakoudakis, Ioannis A. Katsoyiannis, and George Z. Kyzas. 2021. "Activated Carbons for Arsenic Removal from Natural Waters and Wastewaters: A Review" Water 13, no. 21: 2982. https://doi.org/10.3390/w13212982
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