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Article

ZnO/Ag3PO4 and ZnO–Malachite as Effective Photocatalysts for the Removal of Enteropathogenic Bacteria, Dyestuffs, and Heavy Metals from Municipal and Industrial Wastewater

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Grupo de Catálisis, Escuela de Ciencias Químicas, Universidad Pedagógica y Tecnológica de Colombia UPTC, Avenida Central del Norte, Boyacá, Tunja 150003, Colombia
2
Grupo de Investigación en Gestión Administrativa y Empresarial Sostenible (GIGAS), Universidad Pedagógica y Tecnológica de Colombia UPTC, Avenida Central del Norte, Boyacá, Tunja 150003, Colombia
3
Instituto de Ciencia de Materiales de Sevilla (ICMS), Centro Mixto Universidad de Sevilla-CSIC, Américo Vespucio 49, 41092 Seville, Spain
4
Departamento de Química, Universidad de Tolima, Barrio Santa Elena, Ibagué 730005, Colombia
*
Author to whom correspondence should be addressed.
Academic Editors: Changseok Han, Daphne Hermosilla Redondo, Hodon Ryu, Woo Hyoung Lee and Miguel Angel Mueses
Water 2021, 13(16), 2264; https://doi.org/10.3390/w13162264
Received: 23 July 2021 / Revised: 11 August 2021 / Accepted: 13 August 2021 / Published: 19 August 2021
Different composites based on ZnO/Ag3PO4 and ZnO–malachite (Cu2(OH)2CO3) were synthesized in order to determine their effectiveness in the treatment of municipal and industrial wastewaters (mainly polluted by enteropathogenic bacteria, dyes, and heavy metals). The addition of Ag3PO4 and malachite did not significantly modify the physicochemical properties of ZnO; however, the optical properties of this oxide were modified as a result of its coupling with the modifiers. The modification of ZnO led to an improvement in its effectiveness in the treatment of municipal and industrial wastewater. In general, the amount of malachite or silver phosphate and the effluent to be treated were the determining factors in the effectiveness of the wastewater treatment. The highest degree of elimination of bacteria from municipal wastewater and discoloration of textile staining wastewater were achieved by using ZnO/Ag3PO4 (5%), but an increase in the phosphate content had a detrimental effect on the treatment. Likewise, the highest Fe and Cu photoreduction from coal mining wastewater was observed by using ZnO–malachite (2.5%) and ZnO/Ag3PO4 (10%), respectively. Some of the results of this work were presented at the fourth Congreso Colombiano de Procesos Avanzados de Oxidación (4CCPAOx). View Full-Text
Keywords: municipal effluents; textile staining wastewater; coal mining drainages; photocatalysis; ZnO(-malachite-Ag3PO4) municipal effluents; textile staining wastewater; coal mining drainages; photocatalysis; ZnO(-malachite-Ag3PO4)
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MDPI and ACS Style

Murcia, J.J.; Hernández Niño, J.S.; Rojas, H.; Brijaldo, M.H.; Martín-Gómez, A.N.; Sánchez-Cid, P.; Navío, J.A.; Hidalgo, M.C.; Jaramillo-Paez, C. ZnO/Ag3PO4 and ZnO–Malachite as Effective Photocatalysts for the Removal of Enteropathogenic Bacteria, Dyestuffs, and Heavy Metals from Municipal and Industrial Wastewater. Water 2021, 13, 2264. https://doi.org/10.3390/w13162264

AMA Style

Murcia JJ, Hernández Niño JS, Rojas H, Brijaldo MH, Martín-Gómez AN, Sánchez-Cid P, Navío JA, Hidalgo MC, Jaramillo-Paez C. ZnO/Ag3PO4 and ZnO–Malachite as Effective Photocatalysts for the Removal of Enteropathogenic Bacteria, Dyestuffs, and Heavy Metals from Municipal and Industrial Wastewater. Water. 2021; 13(16):2264. https://doi.org/10.3390/w13162264

Chicago/Turabian Style

Murcia, Julie Joseane, Jhon Sebastián Hernández Niño, Hugo Rojas, María Helena Brijaldo, Andrés Noel Martín-Gómez, Pablo Sánchez-Cid, José Antonio Navío, María Carmen Hidalgo, and César Jaramillo-Paez. 2021. "ZnO/Ag3PO4 and ZnO–Malachite as Effective Photocatalysts for the Removal of Enteropathogenic Bacteria, Dyestuffs, and Heavy Metals from Municipal and Industrial Wastewater" Water 13, no. 16: 2264. https://doi.org/10.3390/w13162264

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