Degradation of dairy wastewater using sustainable nanotechnology composed of a-Fe<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub> rod-shaped material and photocatalytic process: a complementary treatment approach for industrial wastewater

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dc.contributor.authorEspinoza-Villalobos, Nicole
dc.contributor.authorRojas, Susana
dc.contributor.authorBarrientos, Lorena
dc.contributor.authorSalazar-Gonzalez, Ricardo
dc.contributor.authorLuna, Damari
dc.contributor.authorFlores, Caetano
dc.contributor.authorEscalona, Nestor
dc.date.accessioned2025-01-20T16:15:50Z
dc.date.available2025-01-20T16:15:50Z
dc.date.issued2024
dc.description.abstractBACKGROUND: High water consumption and the toxic pollutants found in industrial wastewater are key challenges in achieving a more sustainable development. In this sense, it is crucial to develop sustainable ways to reduce the organic pollutants found in wastewater and to promote its reuse.
dc.description.abstractRESULTS: In this study, a simple, low-cost, and environmentally friendly path for dairy wastewater decontamination through photocatalysis using rod-shaped alpha-Fe2O3/TiO2 type II heterojunctions is reported. The photoreaction of the model solution was evaluated under UVA-visible irradiation with different amounts of alpha-Fe2O3 over TiO2, lactose as pollutant concentrations, Cl- and SO42- anions effects, and oxidant ambient showing up to 42% lactose degradation without the addition of oxidant ambient. Optimized parameters (1.0%wt alpha-Fe2O3/TiO2, [catalyst] = 0.5 g L-1, [lactose] = 0.7 g L-1, [H2O2] = 10 mM, [O-2] = constant) were used on dairy wastewater, which showed a 63% total organic carbon reduction and a 56% chemical oxygen demand reduction. The composite was easily recovered by decantation with a turbidity reduction of similar to 99%. The photocatalyst reusability was assessed over three successive uses and it maintained its activity with a loss of only 10%.
dc.description.abstractCONCLUSION: This study offers a promising approach for the development of innovative sustainable nanotechnology to efficiently degrade organic pollutants commonly found in dairy wastewater and improve its quality within a shorter timeframe. Our approach could contribute to the development of efficient and cost-effective complementary technologies for the Sequencing Batch Reactor in the treatment of dairy wastewater, thus contributing to the sustainability of the dairy industry. (c) 2024 Society of Chemical Industry (SCI).
dc.description.funderFONDOS DE APOYO A LA INVESTIGACIN CIENCIA BASICA 2023 UC
dc.fuente.origenWOS
dc.identifier.doi10.1002/jctb.7687
dc.identifier.eissn1097-4660
dc.identifier.issn0268-2575
dc.identifier.urihttps://doi.org/10.1002/jctb.7687
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90516
dc.identifier.wosidWOS:001245948000001
dc.issue.numero12
dc.language.isoen
dc.pagina.final2534
dc.pagina.inicio2522
dc.revistaJournal of chemical technology and biotechnology
dc.rightsacceso restringido
dc.subjectsustainable processing
dc.subjectphotocatalysis
dc.subjectwaste-water
dc.subjectpersistent organic pollutants (POPs)
dc.subjectdegradation
dc.titleDegradation of dairy wastewater using sustainable nanotechnology composed of a-Fe<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub> rod-shaped material and photocatalytic process: a complementary treatment approach for industrial wastewater
dc.typeartículo
dc.volumen99
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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