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Castillo-Suárez LA, Linares-Hernández I, Martínez-Miranda V, Garduño-Pineda L, Castañeda-Juárez M, Teutli-Sequeira EA. Denim industry wastewater treatment by a heterogeneous solar-Fenton process catalyzed by Fe supported on recycled polyethylene terephthalate (PET) by ultrasonic modification. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119929. [PMID: 38169262 DOI: 10.1016/j.jenvman.2023.119929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/01/2023] [Accepted: 12/23/2023] [Indexed: 01/05/2024]
Abstract
The textile industry is an important economic sector; however, its wastewater generates a great impact on the environment. A heterogeneous solar Fenton (HSF) process was evaluated for denim wastewater treatment. The catalyst was obtained through ultrasonic modification of recycled polyethylene terephthalate (PET) with Fe nanoparticles (PET/NPs- Fe3O4). The SFH process was optimized using surface response methodology with a face-centered central composite design considering the effects of the hydraulic retention time (10, 25, and 40 min), hydrogen peroxide dosage (500, 1000, and 1500 mg/L), and mass of the packed catalyst (4, 6 and 8 g) on the color, COD, and turbidity removal efficiencies. The operating conditions for maximum COD removal were H2O2 541.7 mg/L, HRT 33.9 min, and PET/NPs- Fe3O4 dose 7.9 g with solar radiation. The removal of 91.2% COD, 86.2% color, 90.4% turbidity, and 81.9% TOC was obtained at 14.2 kJ/L QUva. PET modification yielded 1.6 mg Fe/g PET, and the modification method does not allow Fe leaching. The effluent obtained from the SFH process complies with the maximum permissible limits in Mexican legislation in terms of COD, TOC, turbidity, and color and allows the reuse of PET.
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Affiliation(s)
- Luis Antonio Castillo-Suárez
- Instituto Interamericano de Tecnología y Ciencias del Agua (IITCA), Universidad Autónoma del Estado de México, Unidad San Cayetano, Km. 14.5, Carretera, Toluca-Atlacomulco, C.P. 50200, Toluca, Estado de México, Mexico.
| | - Ivonne Linares-Hernández
- Instituto Interamericano de Tecnología y Ciencias del Agua (IITCA), Universidad Autónoma del Estado de México, Unidad San Cayetano, Km. 14.5, Carretera, Toluca-Atlacomulco, C.P. 50200, Toluca, Estado de México, Mexico.
| | - Verónica Martínez-Miranda
- Instituto Interamericano de Tecnología y Ciencias del Agua (IITCA), Universidad Autónoma del Estado de México, Unidad San Cayetano, Km. 14.5, Carretera, Toluca-Atlacomulco, C.P. 50200, Toluca, Estado de México, Mexico
| | - Laura Garduño-Pineda
- Instituto Tecnológico de Estudios Superiores de Jocotitlán, Carretera Toluca-Atlacomulco Km 44.8, Ejido e San Juan y San Agustín, Jocotitlán, Edo, Mexico
| | - Monserrat Castañeda-Juárez
- Instituto Interamericano de Tecnología y Ciencias del Agua (IITCA), Universidad Autónoma del Estado de México, Unidad San Cayetano, Km. 14.5, Carretera, Toluca-Atlacomulco, C.P. 50200, Toluca, Estado de México, Mexico
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Linares-Hernández I, Antonio Castillo-Suárez L, Ibanez JG, Vasquez-Medrano R, Miguel López-Rebollar B, Santoyo-Tepole F, Alejandra Teutli-Sequeira E, Martínez-Cienfuegos IG. Degradation of commercial paraquat in a solar-Fenton pilot lagoon using iron oxalate as a chelating agent: Hydro-thermal analysis with CFD. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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