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González-Rodríguez J, Conde JJ, Vargas-Osorio Z, Vázquez-Vázquez C, Piñeiro Y, Rivas J, Feijoo G, Moreira MT. LED-driven photo-Fenton process for micropollutant removal by nanostructured magnetite anchored in mesoporous silica. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119461. [PMID: 37922820 DOI: 10.1016/j.jenvman.2023.119461] [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: 07/20/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 11/07/2023]
Abstract
The presence of organic micropollutants in water bodies represents a threat to living organisms and ecosystems due to their toxicological effects and recalcitrance in conventional wastewater treatments. In this context, the application of heterogeneous photo-Fenton based on magnetite nanoparticles supported on mesoporous silica (SBA15) is proposed to carry out the non-specific degradation of the model compounds ibuprofen, carbamazepine, hormones, bisphenol A and the dye ProcionRed®. The operating conditions (i.e., pH, catalyst load and hydrogen peroxide concentration) were optimized by Response Surface Methodology (RSM). The paramagnetic properties of the nanocatalysts allowed their repeated use in sequential batch operations with catalyst losses below 1%. The feasibility of the process was demonstrated as removal rates above 90% after twelve accomplished after twelve consecutive cycles. In addition, the contributions of different reactive oxygen species, mainly •OH, were analyzed together with the formation of by-products, achieving total mineralization values of 15% on average.
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Affiliation(s)
- J González-Rodríguez
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
| | - J J Conde
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Z Vargas-Osorio
- Department of Biomaterials, Centre for Functional and Surface Functionalized Glass (FUNGLASS), Alexander Dubcek University of Trencin, Slovakia; Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - C Vázquez-Vázquez
- Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Y Piñeiro
- Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - J Rivas
- Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - G Feijoo
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - M T Moreira
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
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Javed M, Khalid WB, Iqbal S, Qamar MA, Alrbyawi H, Awwad NS, Ibrahium HA, Al-Anazy MM, Elkaeed EB, Pashameah RA, Alzahrani E, Farouk AE. Integration of Mn-ZnFe 2O 4 with S-g-C 3N 4 for Boosting Spatial Charge Generation and Separation as an Efficient Photocatalyst. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27206925. [PMID: 36296515 PMCID: PMC9610048 DOI: 10.3390/molecules27206925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/05/2022] [Accepted: 10/12/2022] [Indexed: 11/06/2022]
Abstract
The disposal of dyes and organic matter into water bodies has become a significant source of pollution, posing health risks to humans worldwide. With rising water demands and dwindling supplies, these harmful compounds must be isolated from wastewater and kept out of the aquatic environment. In the research presented here, hydrothermal synthesis of manganese-doped zinc ferrites’ (Mn-ZnFe2O4) nanoparticles (NPs) and their nanocomposites (NCs) with sulfur-doped graphitic carbon nitride (Mn-ZnFe2O4/S-g-C3N4) are described. The samples’ morphological, structural, and bonding features were investigated using SEM, XRD, and FTIR techniques. A two-phase photocatalytic degradation study of (0.5, 1, 3, 5, 7, 9, and 11 wt.%) Mn-doped ZnFe2O4 NPs and Mn-ZnFe2O4/(10, 30, 50, 60, and 70 wt.%) S-g-C3N4 NCs against MB was carried out to find the photocatalyst with maximum efficiency. The 9% Mn-ZnFe2O4 NPs and Mn-ZnFe2O4/50% S-g-C3N4 NCs exhibited the best photocatalyst efficiency in phase one and phased two, respectively. The enhanced photocatalytic activity of the Mn-ZnFe2O4/50% S-g-C3N4 NCs could be attributed to synergistic interactions at the Mn-ZnFe2O4/50% S-g-C3N4 NCs interface that resulted in a more effective transfer and separation of photo-induced charges. Therefore, it is efficient, affordable, and ecologically secure to modify ZnFe2O4 by doping with Mn and homogenizing with S-g-C3N4. As a result, our current research suggests that the synthetic ternary hybrid Mn-ZnFe2O4/50% S-g-C3N4 NCs may be an effective photocatalytic system for degrading organic pollutants from wastewater.
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Affiliation(s)
- Mohsin Javed
- Department of Chemistry, School of Science, University of Management and Technology, Lahore 54770, Pakistan
| | - Waleed Bin Khalid
- Department of Chemistry, School of Science, University of Management and Technology, Lahore 54770, Pakistan
| | - Shahid Iqbal
- Department of Chemistry, School of Natural Sciences (SNS), National University of Science and Technology (NUST), H-12, Islamabad 46000, Pakistan
- Correspondence:
| | - Muhammad Azam Qamar
- Department of Chemistry, School of Science, University of Management and Technology, Lahore 54770, Pakistan
| | - Hamad Alrbyawi
- Pharmaceutics and Pharmaceutical Technology Department, College of Pharmacy, Taibah University, Medina 42353, Saudi Arabia
| | - Nasser S. Awwad
- Chemistry Department, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Hala A. Ibrahium
- Biology Department, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
- Department of Semi Pilot Plant, Nuclear Materials Authority, El Maadi P.O. Box 530, Egypt
| | - Murefah Mana Al-Anazy
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Eslam B. Elkaeed
- Department of Pharmaceutical Sciences, College of Pharmacy, AlMaarefa University, Riyadh 13713, Saudi Arabia
| | - Rami Adel Pashameah
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah 24230, Saudi Arabia
| | - Eman Alzahrani
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Abd-ElAziem Farouk
- Department of Biotechnology College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
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