Continuous flow operation of solar photo-Fenton fused with NaOCl as a novel tertiary treatment.

Autor: Attar SB; Solar Energy Research Centre (CIESOL), Ctra. de Sacramento s/n, Almería 04120, Spain; Chemical Engineering Department, University of Almería, Carretera de Sacramento s/n, Almería 04120, Spain., Soriano-Molina P; Solar Energy Research Centre (CIESOL), Ctra. de Sacramento s/n, Almería 04120, Spain; Chemical Engineering Department, University of Almería, Carretera de Sacramento s/n, Almería 04120, Spain. Electronic address: paula.soriano@ual.es., Pichel N; Solar Energy Research Centre (CIESOL), Ctra. de Sacramento s/n, Almería 04120, Spain; Chemical Engineering Department, University of Almería, Carretera de Sacramento s/n, Almería 04120, Spain., París-Reche A; Solar Energy Research Centre (CIESOL), Ctra. de Sacramento s/n, Almería 04120, Spain; Department of Chemistry and Physics, University of Almería, Carretera de Sacramento s/n, Almería 04120, Spain., Plaza-Bolaños P; Solar Energy Research Centre (CIESOL), Ctra. de Sacramento s/n, Almería 04120, Spain; Department of Chemistry and Physics, University of Almería, Carretera de Sacramento s/n, Almería 04120, Spain., Agüera A; Solar Energy Research Centre (CIESOL), Ctra. de Sacramento s/n, Almería 04120, Spain; Department of Chemistry and Physics, University of Almería, Carretera de Sacramento s/n, Almería 04120, Spain., Pérez JAS; Solar Energy Research Centre (CIESOL), Ctra. de Sacramento s/n, Almería 04120, Spain; Chemical Engineering Department, University of Almería, Carretera de Sacramento s/n, Almería 04120, Spain. Electronic address: jsanchez@ual.es.
Jazyk: angličtina
Zdroj: Journal of hazardous materials [J Hazard Mater] 2023 Oct 15; Vol. 460, pp. 132354. Date of Electronic Publication: 2023 Aug 21.
DOI: 10.1016/j.jhazmat.2023.132354
Abstrakt: A novel strategy based on solar photo-Fenton mediated by ferric nitrilotriacetate (Fe 3+ -NTA) combined with NaOCl in continuous flow mode for wastewater reclamation has been studied. Escherichia coli (E. coli) inactivation attained ≥ 5 log10-units, meeting the most restrictive EU 2020/741 target (10 CFU/100 mL), and 75% of organic microcontaminant total load was removed. As a remarkable finding, trihalomethanes (THMs) concentration was insignificant, complying by far with the Italian legislation limit. To attain these results, first the effect of liquid depth on E. coli inactivation and imidacloprid (IMD) removal from spiked municipal effluents was evaluated in continuous flow pilot-scale raceway pond reactors at 60-min hydraulic residence time with low reagent concentrations (0.10 mM Fe 3+ -NTA, 0.73 mM H 2 O 2 and 0.13 mM NaOCl). Disinfection was due to the bactericidal effect of chlorine. In contrast, liquid depth notably influenced microcontaminant removal, highlighting that operation at 10-cm liquid depth allows achieving treatment capacities higher than at 5 cm (16.50 vs 28.20 mg IMD/m 2 ∙day). Next, the monitoring of THMs was carried out to evaluate the generation and degradation of disinfection by-products, along with the removal of actual microcontaminants. These promising results draw attention to the treatment potential and open the way for its commercial application.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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