Photocatalysis for arsenic removal from water: considerations for solar photocatalytic reactors
Autor: | Felipe Silerio-Vázquez, María Teresa Alarcón-Herrera, Jochen Bundschuh, José Bernardo Proal Nájera |
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Rok vydání: | 2021 |
Předmět: |
Health
Toxicology and Mutagenesis chemistry.chemical_element Portable water purification Catalysis Arsenic Water Purification Adsorption Humans Environmental Chemistry Titanium integumentary system Waste management business.industry Advanced oxidation process Water General Medicine Solar energy Pollution Pilot plant chemistry Scientific method Sunlight Photocatalysis Environmental science business Water Pollutants Chemical |
Zdroj: | Environmental Science and Pollution Research. 29:61594-61607 |
ISSN: | 1614-7499 0944-1344 |
Popis: | 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. |
Databáze: | OpenAIRE |
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