Photocatalysis for arsenic removal from water: considerations for solar photocatalytic reactors

Silerio-Vazquez, Felipe and Proal Najera, Jose B. and Bundschuh, Jochen and Alarcon-Herrera, Maria T. (2021) Photocatalysis for arsenic removal from water: considerations for solar photocatalytic reactors. Environmental Science and Pollution Research. pp. 1-14. ISSN 0944-1344


Abstract

The following work provides a perspective on the potential application of solar heterogeneous photocatalysis, which is a nonselective advanced oxidation process considered as a sustainable technology, to assist in arsenic removal from water, which is a global threat to human health. Heterogeneous photocatalysis can oxidize trivalent arsenic to pentavalent arsenic, decreasing its toxicity and easing its removal with other technologies, such as chemical precipitation and adsorption. Several lab-scale arsenic photocatalytic oxidation and diverse solar heterogeneous photocatalytic operations carried out in different reactor designs are analyzed. It was found out that this technology has not been translated to operational pilot plant scale prototypes. General research on reactors is scarce, comprising a small percentage of the photocatalysis related scientific literature. It was possible to elucidate some operational parameters that a reactor must comply to operate efficiently. Reports on small-scale application shed light that in areas where other water purification technologies are economically and/or technically not suitable, and the solar energy is available, shed light on the fact that solar heterogeneous photocatalysis is highly promissory within a water purification process for removal of arsenic from water.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Date Deposited: 24 Jun 2022 00:15
Last Modified: 12 Jul 2022 01:06
Uncontrolled Keywords: Advanced oxidation process, Dissolved oxygen, Drinking water, Solar energy, Titanium dioxide
Fields of Research (2008): 09 Engineering > 0904 Chemical Engineering > 090410 Water Treatment Processes
09 Engineering > 0905 Civil Engineering > 090508 Water Quality Engineering
03 Chemical Sciences > 0305 Organic Chemistry > 030504 Organic Green Chemistry
Fields of Research (2020): 34 CHEMICAL SCIENCES > 3405 Organic chemistry > 340504 Organic green chemistry
40 ENGINEERING > 4004 Chemical engineering > 400499 Chemical engineering not elsewhere classified
40 ENGINEERING > 4004 Chemical engineering > 400411 Water treatment processes
Identification Number or DOI: https://doi.org/10.1007/s11356-021-16507-5
URI: http://eprints.usq.edu.au/id/eprint/49276

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