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Valdés C, Quispe C, Fritz RA, Andler R, Villaseñor J, Pecchi G, Avendaño E, Delgadillo A, Setzer WN, Sharifi-Rad J. MnO 2/TiO 2-Catalyzed ozonolysis: enhancing Pentachlorophenol degradation and understanding intermediates. BMC Chem 2024; 18:83. [PMID: 38725018 PMCID: PMC11080107 DOI: 10.1186/s13065-024-01194-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 04/17/2024] [Indexed: 05/12/2024] Open
Abstract
Pentachlorophenol is a pesticide widely known for its harmful effects on sewage, causing harm to the environment. In previous studies, our group identified adsorption as a crucial factor in catalytic ozonation processes, and subsequent observations revealed the catalyst's role in reducing toxicity during degradation. In this research, we quantified organochlorine intermediates and low molecular weight organic acids generated under optimal pH conditions (pH 9), with and without the catalyst. Additionally, we assessed the reactivity of these intermediates through theoretical calculations. Our findings indicate that the catalyst reduces the duration of intermediates. Additionally, the presence of CO2 suggests enhanced mineralization of pentachlorophenol, a process notably facilitated by the catalyst. Theoretical calculations, such as Fukui analysis, offer insights into potential pathways for the dechlorination of aromatic molecules by radicals like OH, indicating the significance of this pathway.
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Affiliation(s)
- Cristian Valdés
- Centro de investigación de Estudios Avanzados del Maule, Vicerrectoría de Investigación y Postgrado, Universidad Católica del Maule, Avenida San Miguel 3605, Talca, Chile
| | - Cristina Quispe
- Facultad de Ciencias de la Salud, Universidad Arturo Prat, Casilla 121, Iquique, 1110939, Chile.
| | - Rubén A Fritz
- Dirección de Investigación Científica y Tecnológica. Vicerrectoría de Investigación, Desarrollo e Innovación, Universidad de Santiago de Chile, Avenida Libertador Bernardo O'Higgins 3363, Santiago, Chile
| | - Rodrigo Andler
- Escuela de Ingeniería en Biotecnología, Universidad Católica del Maule, Avenida San Miguel 3605, Casilla 617, Talca, Chile
| | - Jorge Villaseñor
- Laboratorio de Fisicoquímica, Instituto de Química y Recursos Naturales, Universidad de Talca, 2 Norte 685, Casilla 721, Talca, Chile
| | - Gina Pecchi
- Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Concepción, Chile
| | - Edgardo Avendaño
- Departamento de Química e Ingeniería Química, Facultad de Ingeniería, Universidad Nacional Jorge Basadre Grohmann, Avenida Miraflores s/n, Tacna, 23001, Perú
| | - Alvaro Delgadillo
- Departamento de Química, Facultad de Ciencias, Universidad de La Serena, Casilla 599, Benavente 980, La Serena, Chile
| | - William N Setzer
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL, 35899, USA
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Bilea F, Bradu C, Cicirma M, Medvedovici AV, Magureanu M. Plasma treatment of sulfamethoxazole contaminated water: Intermediate products, toxicity assessment and potential agricultural reuse. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 909:168524. [PMID: 37972787 DOI: 10.1016/j.scitotenv.2023.168524] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/26/2023] [Accepted: 11/10/2023] [Indexed: 11/19/2023]
Abstract
The increasing global water demand has prompted the reuse of treated wastewater. However, the persistence of organic micropollutants in inefficiently treated effluents can have detrimental effects depending on the scope of the reclaimed water usage. One example is the presence of sulfamethoxazole, a widely used antibiotic whose interference with the folate synthesis pathway negatively affects plants and microorganisms. The goal of this study is to assess the suitability of a non-thermal plasma-ozonation technique for the removal of the organic pollutant and reduction of its herbicidal effect. Fast sulfamethoxazole degradation was achieved with apparent reaction rate constants in the range 0.21-0.49 min-1, depending on the initial concentration. The highest energy yield (64.5 g/kWh at 50 % removal) exceeds the values reported thus far in plasma degradation experiments. During treatment, 38 degradation intermediates were detected and identified, of which only 9 are still present after 60 min. The main reactive species that contribute to the degradation of sulfamethoxazole and its intermediate products were hydroxyl radicals and ozone, which led to the formation of several hydroxylated compounds, ring opening and fragmentation. The herbicidal effect of the target compound was eliminated with its removal, showing that the remanent intermediates do not retain phytotoxic properties.
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Affiliation(s)
- Florin Bilea
- National Institute for Lasers, Plasma and Radiation Physics, Atomistilor Str. 409, 077125 Magurele, Romania; Faculty of Chemistry, University of Bucharest, Regina Elisabeta Bd. 4-12, 030018 Bucharest, Romania.
| | - Corina Bradu
- Faculty of Biology, University of Bucharest, Splaiul Independenței Str. 91-95, 050095 Bucharest, Romania
| | - Marius Cicirma
- National Institute for Lasers, Plasma and Radiation Physics, Atomistilor Str. 409, 077125 Magurele, Romania
| | | | - Monica Magureanu
- National Institute for Lasers, Plasma and Radiation Physics, Atomistilor Str. 409, 077125 Magurele, Romania.
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Regulating the charge density of Cu(I) single sites enriched on the surface of N3c Vacancies-engineered g-C3N4 for efficient Fenton-like reactions. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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Mandor H, Amin NK, Abdelwahab O, El-Ashtoukhy ESZ. Preparation and characterization of N-doped ZnO and N-doped TiO 2 beads for photocatalytic degradation of phenol and ammonia. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:56845-56862. [PMID: 35347620 PMCID: PMC9374654 DOI: 10.1007/s11356-022-19421-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
N-doped ZnO beads (NZB) and N-doped TiO2 beads (NTB) were synthesized via a modified sol-gel technique utilizing chitosan (CS)/polyvinyl alcohol (PVA) hydrogel beads as basic support for photocatalyst. Urea was used as a source of nitrogen in the preparation of N-doped ZnO beads, while ammonium acetate, CH3COONH4, was used as a nitrogen source in the production of N-doped TiO2 beads. The characteristics of synthesized beads were identified by scanning electron microscope (SEM), X-ray photoelectron spectroscopy analysis (XPS), X-ray diffraction (XRD), N2 adsorption-desorption isotherms, BET surface area, Fourier transform infrared (FT-IR) measurements, and diffuse reflectance spectroscopy (DRS) studies. The use of the nitrogen doping method for photocatalyst was performed to adjust the bandgap and electrical properties of ZnO and TiO2 by establishing acceptor defects. NZB and NTB with the intrinsic donor defect of oxygen vacancy and the nitrogen-to-oxygen acceptor defect could be activated by a less-energy UV consumption for efficient pollutant degradation. The results indicated that the as-synthesized NZB achieved much higher degradation activity than NTB, commercial ZnO, and TiO2 in the decomposition of a binary mixture composed of ammonia and phenol under UV light irradiation.
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Affiliation(s)
- Hagar Mandor
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
| | - Nevine K Amin
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
| | - Ola Abdelwahab
- National Institute of Oceanography and Fisheries, NIOF, Alexandria, Egypt.
| | - El-Sayed Z El-Ashtoukhy
- Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
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Khraisheh M, AlMomani F, Inamdar M, Hassan MK, Al-Ghouti MA. Ionic liquids application for wastewater treatment and biofuel production: A mini review. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116421] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Benchmarking recent advances and innovative technology approaches of Fenton, photo-Fenton, electro-Fenton, and related processes: A review on the relevance of phenol as model molecule. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116337] [Citation(s) in RCA: 161] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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A Rapid Fenton treatment of bio-treated dyeing and finishing wastewater at second-scale intervals: kinetics by stopped-flow technique and application in a full-scale plant. Sci Rep 2019; 9:9689. [PMID: 31273245 PMCID: PMC6609656 DOI: 10.1038/s41598-019-45948-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 06/20/2019] [Indexed: 11/08/2022] Open
Abstract
A rapid Fenton treatment at second-scale intervals was investigated for further removal of organic compounds in the effluent of bio-treated dyeing and finishing wastewater (BDFW). The decolorization kinetics was studied using a stopped-flow spectrophotometer (SFS) at second-scale intervals. A combined first-order model was found to fit well for the decrease of both methylene blue and rhodamine B in SFS as well as SCOD (soluble chemical oxygen demand) and DOC (dissolved organic carbon) in real BDFW in batch test during Fenton oxidation. A full-scale plant with treatment capacity of 400,000 m3·d−1 was designed and has been run continuously based on the results of the stopped-flow study to treat the effluent of BDFW using Fenton oxidation in 16 pipeline reactors, each with a volume of 6.9 m3 and 24 s of reaction time since 2014. The COD, SCOD and DOC decreased from 140, 110 and 35 mg·L−1 to 77, 71 and 26 mg·L−1 respectively, which can meet the latest strict discharge limitations. The natural fluorescent substances detected in the BDFW were completely removed. The main organic pollutants in the BDFW can be significantly reduced using both gas chromatography-mass spectrometry and ultrahigh-performance liquid chromatography-hybrid quadrupole time-of-flight mass spectrometry. The rapid Fenton reaction applied in pipeline reactors at second intervals has several advantages over the conventional Fenton’s process such as much shorter reaction time at second scale intervals, no need to build extra pH adjustment or reaction tanks, simple operation, low capital cost, etc.
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Huang Y, Tian X, Nie Y, Yang C, Wang Y. Enhanced peroxymonosulfate activation for phenol degradation over MnO 2 at pH 3.5-9.0 via Cu(II) substitution. JOURNAL OF HAZARDOUS MATERIALS 2018; 360:303-310. [PMID: 30125746 DOI: 10.1016/j.jhazmat.2018.08.028] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 08/08/2018] [Accepted: 08/09/2018] [Indexed: 06/08/2023]
Abstract
Cu(II) doped mesoporous MnO2 (Cu-MnO2) was prepared to establish an intimate functional link between the structure substitution and catalytic peroxymonosulfate (PMS) activation. Based on the characterization of powder X-ray diffraction (XRD), N2 adsorption-desorption measurement, scanning electron microscope (FE-SEM) and transmission electron microscope (TEM), Cu-MnO2 had a typical long range ordered mesoporous structure and Cu was successfully introduced in octahedral framework. It exhibited excellent catalytic activity and stability for the phenol degradation by PMS. Phenol was always efficiently degraded over Cu-MnO2 at a pH range of 3.5-9.0. For example, the reaction rate constant at pH 7.0 was 0.073 min-1, which was two times higher than that of MnO2 (0.039 min-1). Importantly, 1O2 was identified as the primary reactive species in Cu-MnO2/PMS system. X-ray photoelectron spectroscopy (XPS) confirmed that more exposed surface oxygen defects due to Cu doping were responsible to the enhancement of PMS activation for phenol degradation. The results of PMS decomposition and oxygen evolution indicated that surface oxygen defects lower the reaction energy barrier of PMS decomposition by generating 1O2 via the energy trapping by oxygen. Finally, the heterogeneous PMS activation mechanism over Cu-MnO2 was proposed.
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Affiliation(s)
- Yulin Huang
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China
| | - Xike Tian
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China.
| | - Yulun Nie
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China
| | - Chao Yang
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, PR China
| | - Yanxin Wang
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, PR China
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Eslami A, Asadi A, Meserghani M, Bahrami H. Optimization of sonochemical degradation of amoxicillin by sulfate radicals in aqueous solution using response surface methodology (RSM). J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.07.096] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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