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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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2
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Application of Heterogeneous Catalytic Ozonation in Wastewater Treatment: An Overview. Catalysts 2023. [DOI: 10.3390/catal13020342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Catalytic ozonation is a non-selective mineralization technology of organic matter in water by using active free radicals generated by ozone degradation. Catalytic ozonation technology can be divided into homogeneous catalytic reactions using metal ions as catalysts and heterogeneous catalytic reactions using solid catalysts. Homogeneous catalytic ozonation technology has many problems, such as low mineralization rate, secondary pollution caused by the introduction of metal ions and low utilization efficiency of oxidants, which limit its practical application. Compared with homogeneous catalytic ozonation technology, heterogeneous catalytic ozonation technology has the advantages of easy recovery, lower cost of water treatment, higher activity and improved mineralization rate of organic matter. This overview classifies and describes catalysts for heterogeneous catalytic ozonation technology, including the different types of metal oxides, metal-free catalysts, and substrates used to immobilize catalysts. In addition, the heterogeneous catalytic ozonation process involved in the multiphase complex reaction process is discussed. The effects of different parameters on the performance of heterogeneous catalytic ozonation are also discussed.
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3
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Figueredo M, Rodríguez EM, Rivas J, Beltrán FJ. Photocatalytic ozonation in water treatment: Is there really a synergy between systems? WATER RESEARCH 2021; 206:117727. [PMID: 34624657 DOI: 10.1016/j.watres.2021.117727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 09/21/2021] [Accepted: 09/25/2021] [Indexed: 06/13/2023]
Abstract
Numerous studies report on the synergy between ozonation and photocatalytic oxidation (TiO2/UVA), which could open the way to the application of photocatalytic ozonation (PCOz) in water treatment. With the aim of establishing the existence of this synergy and its origin, in this work, using TiO2 P25, 365 nm UVA LEDs and ozone transferred doses up to 5 mg (mg DOC0)-1 (DOC0 7 - 10 mg L-1), a systematic study has been carried out featuring the effect of pH, alkalinity and water matrix in each of the systems involved in PCOz, with special attention to the role of organics adsorption onto TiO2. In ultrapure water, an increase in pH and carbonates content exerted a slight negative effect on the photocatalytic degradation of primidone (low adsorption onto TiO2 and mainly abated by free HO•), this effect being higher on its mineralization. The negative effect of pH and alkalinity was much stronger for oxalic acid (high tendency to adsorb and mainly oxidized by positive holes). Accordingly, the results obtained at pH < pHpzc (point of zero charge of the catalyst) in ultrapure water cannot at all be extrapolated to secondary effluents, since their composition negatively affects the photocatalytic performance. At the experimental conditions applied, only for the secondary effluent a synergy between O3/UVA and TiO2/UVA systems was observed. This synergy would be related, on the one hand, to the generation, from the matrix itself, of reactive entities or intermediates that promote the decomposition of ozone into HO•; and, on the other hand, to an increase in catalyst activity as the matrix UVA absorption decreases, rather than from direct interactions between both systems. Despite de above, ozone requirement to achieve a significant reduction of DOC is high and would only be an interesting strategy for the elimination of ozone-refractory micropollutants.
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Affiliation(s)
- Manuel Figueredo
- Departamento de Ingeniería Química y Química Física, Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. Elvas S/N 06006, Badajoz, Spain
| | - Eva M Rodríguez
- Departamento de Ingeniería Química y Química Física, Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. Elvas S/N 06006, Badajoz, Spain.
| | - Javier Rivas
- Departamento de Ingeniería Química y Química Física, Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. Elvas S/N 06006, Badajoz, Spain
| | - Fernando J Beltrán
- Departamento de Ingeniería Química y Química Física, Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura, Avda. Elvas S/N 06006, Badajoz, Spain
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4
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Munoz M, Cirés S, de Pedro ZM, Colina JÁ, Velásquez-Figueroa Y, Carmona-Jiménez J, Caro-Borrero A, Salazar A, Santa María Fuster MC, Contreras D, Perona E, Quesada A, Casas JA. Overview of toxic cyanobacteria and cyanotoxins in Ibero-American freshwaters: Challenges for risk management and opportunities for removal by advanced technologies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 761:143197. [PMID: 33160675 DOI: 10.1016/j.scitotenv.2020.143197] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/04/2020] [Accepted: 10/16/2020] [Indexed: 06/11/2023]
Abstract
The increasing occurrence of cyanobacterial blooms worldwide represents an important threat for both the environment and public health. In this context, the development of risk analysis and management tools as well as sustainable and cost-effective treatment processes is essential. The research project TALGENTOX, funded by the Ibero-American Science and Technology Program for Development (CYTED-2019), aims to address this ambitious challenge in countries with different environmental and social conditions within the Ibero-American context. It is based on a multidisciplinary approach that combines ecology, water management and technology fields, and includes research groups from Chile, Colombia, Mexico, Peru and Spain. In this review, the occurrence of toxic cyanobacteria and cyanotoxins in freshwaters from these countries are summarized. The presence of cyanotoxins has been confirmed in all countries but the information is still scarce and further monitoring is required. In this regard, remote sensing or metagenomics are good alternatives at reasonable cost. The risk management of freshwaters from those countries considering the most frequent uses (consumption and recreation) has been also evaluated. Only Spain and Peru include cyanotoxins in its drinking water legislation (only MC-LR) and thus, there is a need for regulatory improvements. The development of preventive strategies like diminishing nutrient loads to aquatic systems is also required. In the same line, corrective measures are urgently needed especially in drinking waters. Advanced Oxidation Processes (AOPs) have the potential to play a major role in this scenario as they are effective for the elimination of most cyanotoxins classes. The research on the field of AOPs is herein summarized considering the cost-effectiveness, environmental character and technical applicability of such technologies. Fenton-based processes and photocatalysis using solar irradiation or LED light represent very promising alternatives given their high cost-efficiency. Further research should focus on developing stable long-term operation systems, addressing their scale-up.
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Affiliation(s)
- Macarena Munoz
- Departamento de Ingeniería Química, Universidad Autónoma de Madrid, Madrid, Spain.
| | - Samuel Cirés
- Departamento de Biología, Universidad Autónoma de Madrid, Madrid, Spain.
| | - Zahara M de Pedro
- Departamento de Ingeniería Química, Universidad Autónoma de Madrid, Madrid, Spain
| | - José Ángel Colina
- Departamento de Ingeniería Química, Universidad de Cartagena, Cartagena de Indias, Colombia
| | | | - Javier Carmona-Jiménez
- Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Angela Caro-Borrero
- Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Anthony Salazar
- Centro de Investigación y Tecnología de Agua - CITA, Universidad de Ingeniería y Tecnología - UTEC, Lima, Peru
| | | | - David Contreras
- Centro de Biotecnología, Universidad de Concepción, Concepción, Chile
| | - Elvira Perona
- Departamento de Biología, Universidad Autónoma de Madrid, Madrid, Spain
| | - Antonio Quesada
- Departamento de Biología, Universidad Autónoma de Madrid, Madrid, Spain
| | - Jose A Casas
- Departamento de Ingeniería Química, Universidad Autónoma de Madrid, Madrid, Spain
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5
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Sulfur-doped copper-yttrium bimetallic oxides: A novel and efficient ozonation catalyst for the degradation of aniline. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116248] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Shi W, Ji S, Xu Q, Duan X, Song Z, Xu G. Treatment of pharmaceutical wastewater containing clofibric acid by electron beam irradiation. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06701-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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7
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Abstract
Catalytic ozonation is believed to belong to advanced oxidation processes (AOPs). Over the past decades, heterogeneous catalytic ozonation has received remarkable attention as an effective process for the degradation of refractory organics in wastewater, which can overcome some disadvantages of ozonation alone. Metal oxides, metals, and metal oxides supported on oxides, minerals modified with metals, and carbon materials are widely used as catalysts in heterogeneous catalytic ozonation processes due to their excellent catalytic ability. An understanding of the application can provide theoretical support for selecting suitable catalysts aimed at different kinds of wastewater to obtain higher pollutant removal efficiency. Therefore, the main objective of this review article is to provide a summary of the accomplishments concerning catalytic ozonation to point to the major directions for choosing the catalysts in catalytic ozonation in the future.
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8
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Mao X, Yuan F, Zhou A, Jing W. Magnéli phases Ti O2−1 as novel ozonation catalysts for effective mineralization of phenol. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2018.01.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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9
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Jothinathan L, Hu J. Kinetic evaluation of graphene oxide based heterogenous catalytic ozonation for the removal of ibuprofen. WATER RESEARCH 2018; 134:63-73. [PMID: 29407652 DOI: 10.1016/j.watres.2018.01.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 01/11/2018] [Accepted: 01/13/2018] [Indexed: 06/07/2023]
Abstract
In this study, the performance of graphene oxide (GO) in ozonation process was kinetically evaluated using the modified Rct concept since GO may act as initiator, promoter and inhibitor in ozone radical chain reaction. The applicability of the modified Rct concept was demonstrated using different GO suspensions (GO alone, GO/TiO2, GO/Fe3O4, GO/TiO2/Fe3O4) in ozonation process. Results showed that ozone exposure and •OH exposure were found to be higher for GO/Fe3O4 and GO/TiO2/Fe3O4 compared to other GO suspensions, which was almost equivalent to O3/H2O2 process. The determined initiation and inhibition rate constants of GO alone, were 1 fold higher than GO/Fe3O4 and GO/TiO2/Fe3O4, since the GO alone suspension possesses higher O3 decomposition but lower organic degradation because that GO does not yield •OH. Moreover, GO/Fe3O4 suspension, along with natural organic matter (NOM), was proven to be helpful in degrading ibuprofen in ozonation process, but the effect was minimal when compared to O3/H2O2 process. These results exhibited that the surface modified GO suspensions could be utilized as future alternative AOPs.
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Affiliation(s)
- Lakshmi Jothinathan
- Department of Civil and Environmental Engineering, Faculty of Engineering, National University of Singapore, 1 Engineering Drive 2, 117576, Singapore
| | - Jiangyong Hu
- Department of Civil and Environmental Engineering, Faculty of Engineering, National University of Singapore, 1 Engineering Drive 2, 117576, Singapore.
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10
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Shokri A, Mahanpoor K. Degradation of ortho-toluidine from aqueous solution by the TiO2/O3 process. INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY 2016. [DOI: 10.1007/s40090-016-0110-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Lu X, Shao Y, Gao N, Chen J, Zhang Y, Wang Q, Lu Y. Adsorption and removal of clofibric acid and diclofenac from water with MIEX resin. CHEMOSPHERE 2016; 161:400-411. [PMID: 27448753 DOI: 10.1016/j.chemosphere.2016.07.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 07/05/2016] [Accepted: 07/07/2016] [Indexed: 06/06/2023]
Abstract
This study demonstrates the use of MIEX resin as an efficient adsorbent for the removal of clofibric acid (CA) and diclofenac (DCF). The adsorption performance of CA and DCF are investigated by a batch mode in single-component or bi-component adsorption system. Various factors influencing the adsorption of CA and DCF, including initial concentration, contact time, adsorbent dosage, initial solution pH, agitation speed, natural organic matter and coexistent anions are studied. The Langmuir model can well describe CA adsorption in single-component system, while the Freundlich model gives better fitting in bi-component system. The DCF adsorption can be well fitted by the Freundlich model in both systems. Thermodynamic analyses show that the adsorption of CA and DCF is an endothermic (ΔH(o) > 0), entropy driven (ΔS(o) > 0) process and more randomness exists in the DCF adsorption process. The values of Gibbs free energy (ΔG(o) < 0) indicate the adsorption of DCF is spontaneous but nonspontaneous (ΔG(o) > 0) for CA adsorption. The kinetic data suggest the adsorption of CA and DCF follow the pseudo-first-order model in both systems and the intra-particle is not the unique rate-limiting step. The adsorption process is controlled simultaneously by external mass transfer and surface diffusion according to the surface diffusion modified Biot number (Bis) ranging from 1.06 to 26.15. Moreover, the possible removal mechanism for CA and DCF is respectively proposed based on the ion exchange stoichiometry.
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Affiliation(s)
- Xian Lu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Yisheng Shao
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China; China Academy of Urban Planning & Design, Beijing, China.
| | - Naiyun Gao
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Juxiang Chen
- College of Architecture and Civil Engineering, Xinjiang University, Urumqi, China
| | - Yansen Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Qiongfang Wang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Yuqi Lu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
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12
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Ling Y, Liao G, Xie Y, Yin J, Huang J, Feng W, Li L. Coupling photocatalysis with ozonation for enhanced degradation of Atenolol by Ag-TiO2 micro-tube. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.07.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Cotman M, Erjavec B, Djinović P, Pintar A. Catalyst support materials for prominent mineralization of bisphenol A in catalytic ozonation process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:10223-10233. [PMID: 26880522 DOI: 10.1007/s11356-016-6251-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 02/04/2016] [Indexed: 06/05/2023]
Abstract
Degradation of aqueous solution of bisphenol A (BPA) has been investigated through non-catalytic and catalytic ozonation treatments conducted in a semi-batch reactor. Non-catalytic ozonation resulted in complete degradation of aqueous BPA in less than 3 min but did not completely convert the reaction intermediates of BPA ozonation into CO2 and H2O. The main goal of this study was to find an effective heterogeneous catalyst to increase the extent of BPA mineralization at different pH conditions. In this way, the most promising catalyst carrier was γ-Al2O3; at pH = 8.0, 68 % of total organic carbon (TOC) was removed in the period of 75 min, out of which 42 % was attributed to mineralization. Finally, 3.0 wt.% Ru/γ-Al2O3 catalyst exhibited over 82 % of TOC removal after 240 min of ozonation at pH = 5.9, of which 56 % was mineralized.
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Affiliation(s)
- Magda Cotman
- Laboratory for Environmental Sciences and Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1001, Ljubljana, Slovenia.
| | - Boštjan Erjavec
- Laboratory for Environmental Sciences and Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1001, Ljubljana, Slovenia
| | - Petar Djinović
- Laboratory for Environmental Sciences and Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1001, Ljubljana, Slovenia
| | - Albin Pintar
- Laboratory for Environmental Sciences and Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1001, Ljubljana, Slovenia
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14
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Yong EL, Lin YP. Effects of pH value and temperature on the initiation, promotion, inhibition and direct reaction rate constants of natural organic matter in ozonation. RSC Adv 2016. [DOI: 10.1039/c5ra19359a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
pH and temperature affect the kinetics of specific reactions of NOM and influence organic contaminants removal in the ozonation process.
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Affiliation(s)
- Ee Ling Yong
- Centre for Environmental Sustainability and Water Security
- Faculty of Civil Engineering
- Universiti Teknologi Malaysia
- 81310 Skudai
- Malaysia
| | - Yi-Pin Lin
- Graduate Institute of Environmental Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
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15
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Mehrizad A, Gharbani P. Application of central composite design and artificial neural network in modeling of reactive blue 21 dye removal by photo-ozonation process. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 74:184-193. [PMID: 27386996 DOI: 10.2166/wst.2016.199] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The present study deals with use of central composite design (CCD) and artificial neural network (ANN) in modeling and optimization of reactive blue 21 (RB21) removal from aqueous media under photo-ozonation process. Four effective operational parameters (including: initial concentration of RB21, O(3) concentration, UV light intensity and reaction time) were chosen and the experiments were designed by CCD based on response surface methodology (RSM). The obtained results from the CCD model were used in modeling the process by ANN. Under optimum condition (O(3) concentration of 3.95 mg L(-1), UV intensity of 20.5 W m(-2), reaction time of 7.77 min and initial dye concentration of 40.21 mg L(-1)), RB21 removal efficiency reached to up 98.88%. A topology of ANN with a three-layer consisting of four input neurons, 14 hidden neurons and one output neuron was designed. The relative significance of each major factor was calculated based on the connection weights of the ANN model. Dye and ozone concentrations were the most important variables in the photo-ozonation of RB21, followed by reaction time and UV light intensity. The comparison of predicted values by CCD and ANN with experimental results showed that both methods were highly efficient in the modeling of the process.
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Affiliation(s)
- Ali Mehrizad
- Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran E-mail:
| | - Parvin Gharbani
- Department of Chemistry, Ahar Branch, Islamic Azad University, Ahar, Iran
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16
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A promising ozone-based advanced oxidation process for effective generation of hydroxyl radicals in acidic solution. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.07.062] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Aghaeinejad-Meybodi A, Ebadi A, Shafiei S, Khataee A, Rostampour M. Degradation of antidepressant drug fluoxetine in aqueous media by ozone/H2O2 system: process optimization using central composite design. ENVIRONMENTAL TECHNOLOGY 2015; 36:1477-1488. [PMID: 25491028 DOI: 10.1080/09593330.2014.994041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The main objective of this work is the modelling and optimization of antidepressant drug fluoxetine degradation in aqueous solution by ozone/H2O2 process using central composite design. The operational parameters were ozone concentration, initial hydrogen peroxide concentration, reaction time and initial fluoxetine concentration. A good agreement between the predicted values of fluoxetine removal and experimental results were observed (R2=0.976 and Adj-R2=0.955). Pareto analysis indicated that all selected factors and some interactions were effective on the removal efficiency. It was found that the reaction time is the most effective parameter in the ozone/H2O2 process. The maximum removal efficiency (86.14%) was achieved at ozone concentration of 30 mg L(-1), initial H2O2 concentration of 0.02 mM, reaction time of 20 min and initial fluoxetine concentration of 50 mg L(-1) as the optimum conditions.
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Affiliation(s)
- Abbas Aghaeinejad-Meybodi
- a Department of Chemical Engineering , Environmental Engineering Research Centre, Sahand University of Technology , Tabriz , Iran
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18
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Modeling and optimization of antidepressant drug Fluoxetine removal in aqueous media by ozone/H2O2 process: Comparison of central composite design and artificial neural network approaches. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2014.10.022] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Sable SS, Ghute PP, Álvarez P, Beltrán FJ, Medina F, Contreras S. FeOOH and derived phases: Efficient heterogeneous catalysts for clofibric acid degradation by advanced oxidation processes (AOPs). Catal Today 2015. [DOI: 10.1016/j.cattod.2014.03.050] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Solís R, Rivas F, Pérez-Bote J, Gimeno O. Photocatalytic ozonation of 4-chloro-2-methylphenoxyacetic acid and its reaction intermediate 4-chloro-2-methyl phenol. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2014.09.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Wu CC, Huang WJ, Ji BH. Degradation of cyanotoxin cylindrospermopsin by TiO2-assisted ozonation in water. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2015; 50:1116-1126. [PMID: 26191986 DOI: 10.1080/10934529.2015.1047664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The stable tricyclic structure of the cylindrospermopsin (CYN), a cynotoxin, has presented several challenges to water treatment facilities, as conventional treatment methods have a limited ability to remove it from water. This study examines the effectiveness of titanium dioxide (TiO2) in catalytic ozonation for degrading CYN. The chemical kinetics of the reactions of ozone (O3) and hydroxyl radicals (OH(•)) with CYN were determined. The results reveal that TiO2 significantly increases the rate of degradation of CYN by increasing the rate of production of hydroxyl radicals (OH(•)) by initiating the decomposition of O3 on the surface of the catalyst. At a pH of 7 with 1.0 mg L(-1) O3 and 500 mg L(-1) TiO2; the pseudo-first-order ozone decomposition rate constant (k(D)) increased from 3.04 × 10(-3) to 16.53 × 10(-3) s(-1) and the ratio of OH(•) to O3 concentrations (R(ct)) increased from 1.87 × 10(-8) to 126.4 × 10(-8). The calculated second-order rate constant (k(overall)) of the reaction of CYN with O3 and OH(•) was 3.22 M(-1)s(-1) without TiO2. However, the greatest improvement in k(overall) in this study was observed using 500 mg TiO2 L(-1), which increased koverall by a factor of five. TiO2-catalyzed ozonation is an efficient method of oxidation that reduces the toxic activity of CYN. The results of a Microtox test concerning the toxic activity of CYN during oxidation reveal that catalytic ozonation may either increase or reduce the toxicity of CYN toward test samples. The toxic effects of CYN on the samples are greatly influenced by the TiO2 dosage and reaction time, possibly yielding by-products that may change the mutagenic properties of CYN. Three water samples from a eutrophic lake in Taiwan were examined to evaluate the effect of dissolved organic carbon (DOC) and alkalinity on the oxidation of CYN. DOC had the greatest effect on the oxidation of CYN in the ozonation of eutrophic water. Overall, the degree of CYN oxidation depended on the rate constant of the reaction with ozone and the consumption of ozone by the natural water matrix.
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Affiliation(s)
- Chih-Chao Wu
- a Department of Environmental Engineering and Science, Feng Chia University , Taichung City , Taiwan
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Turkay O, Inan H, Dimoglo A. Experimental study of humic acid degradation and theoretical modelling of catalytic ozonation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:202-210. [PMID: 25056748 DOI: 10.1007/s11356-014-3326-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 07/11/2014] [Indexed: 06/03/2023]
Abstract
The efficiency of TiO2 as a catalyst in the ozonation of humic acid (HA) was evaluated in a comprehensive manner. Ozonation, catalytic ozonation and adsorption experiments were conducted using both synthetic HA solution and natural water. HA degradation was evaluated in terms of DOC, VIS400 and UV254. It was shown that the addition of catalyst positively affects the mechanism of ozonation. An increase in HA degradation was observed for all these parameters. The impact of catalyst dose and initial pH value of HA on the efficacy of catalytic ozonation was investigated. The highest removal efficiencies were achieved with the dose of 1 g l(-1) of TiO2 (Degussa P-25) and in the acidic pH region. The catalytic ozonation process was efficient also on natural water component although not at the same level as it was on synthetic water. The adsorptive feature of P-25 was considered to have a clear evidence of the catalytic ozonation mechanism. The mechanism of catalysis on the surface of metal oxides was elucidated with the help of quantum-chemical calculations. In the framework of Density Function Theory (DFT), the O3 decomposition was calculated in the catalytic and non-catalytic processes. Donor-acceptor properties of the frontier (highest occupied and lowest unoccupied molecular orbitals, HOMO/LUMO) orbitals are discussed. Electron density distribution and reaction mechanism of superoxide particles formation, which participate in the process of HA ozonation are analyzed.
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Affiliation(s)
- Ozge Turkay
- Department of Environmental Engineering, Faculty of Engineering, Gebze Institute of Technology, 41400, Gebze, Kocaeli, Turkey,
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Dong Y, Wu L, Wang G, Zhao H, Jiang P, Feng C. Synergistic Effect of Copper and Cobalt in Cu-Co-O Composite Nanocatalyst for Catalytic Ozonation. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.11.3227] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Dai CM, Zhang J, Zhang YL, Zhou XF, Duan YP, Liu SG. Removal of carbamazepine and clofibric acid from water using double templates-molecularly imprinted polymers. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:5492-501. [PMID: 23436062 DOI: 10.1007/s11356-013-1565-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 02/07/2013] [Indexed: 05/14/2023]
Abstract
A novel double templates-molecularly imprinted polymer (MIP) was prepared by precipitation polymerization using carbamazepine (CBZ) and clofibric acid (CA) as the double templates molecular and 2-vinylpyridine as functional monomer. The equilibrium data of MIP was well described by the Freundlich isotherm model. Two kinetic models were adopted to describe the experimental data, and the pseudo second-order model well-described adsorption of CBZ and CA on the MIP. Adsorption experimental results showed that the MIP had good selectivity and adsorption capacity for CBZ and CA in the presence of competitive compounds compared with non-imprinted polymer, commercial powdered activated carbon, and C18 adsorbents. The feasibility of removing CBZ and CA from water by the MIP was demonstrated using tap water, lake water, and river water.
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Affiliation(s)
- Chao-meng Dai
- College of Civil Engineering, Tongji University, Shanghai, 200092, China
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Tong S, Zhao S, Lan X, Ma C. A kinetic model of ti(IV)-catalyzed H2O2/O3 process in aqueous solution. J Environ Sci (China) 2011; 23:2087-2092. [PMID: 22432342 DOI: 10.1016/s1001-0742(10)60675-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
To well describe the Ti(IV)-catalyzed H2O2/O3 reaction in aqueous solution, a kinetic model was established based on its mechanism. This model was then validated by the experiments of acetic acid degradation in aqueous solution. It was found that the correlation coefficient of fittings was higher than 0.970. Three key operating factors affecting organic degradation in the Ti(IV)-catalyzed H2O2/O3 process were studied, including Ti(IV) concentration, dissolved ozone concentration and initial H2O2 concentration. Furthermore, some experiments were conducted to determine the rate constant for dissolved ozone decomposition initiated by Ti2O5(2+). The rate constant measured is almost in accord with the data analyzed by this kinetic model. The goodness of fittings demonstrated that this model could well describe the kinetics of the Ti(IV)-catalyzed H2O2/O3 reaction mathematically and chemically. Therefore, this kinetic model can provide some useful information to optimize the parameters in ozonation of water containing certain pollutants.
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Affiliation(s)
- Shaoping Tong
- College of Chemical Engineering and Materials Science, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China.
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Rosal R, Gonzalo MS, Rodríguez A, García-Calvo E. Catalytic ozonation of fenofibric acid over alumina-supported manganese oxide. JOURNAL OF HAZARDOUS MATERIALS 2010; 183:271-278. [PMID: 20675051 DOI: 10.1016/j.jhazmat.2010.07.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2010] [Revised: 07/01/2010] [Accepted: 07/06/2010] [Indexed: 05/29/2023]
Abstract
The catalytic ozonation of fenofibric acid was studied using activated alumina and alumina-supported manganese oxide in a semicontinuous reactor. The rate constants at 20°C for the non-catalytic reaction of fenofibric acid with ozone and hydroxyl radicals were 3.43±0.20 M(-1) s(-1) and (6.55±0.33)×10(9) M(-1) s(-1), respectively. The kinetic constant for the catalytic reaction between fenofibric acid and hydroxyl radicals did not differ significantly from that of homogeneous ozonation, either using Al(2)O(3) or MnO(x)/Al(2)O(3). The results showed a considerable increase in the generation of hydroxyl radicals due to the use of catalysts even in the case of catalytic runs performed using a real wastewater matrix. Both catalysts promoted the decomposition of ozone in homogeneous phase, but the higher production of hydroxyl radicals corresponded to the catalyst with more activity in terms of ozone decomposition. We did not find evidence of the catalysts having any effect on rate constants, which suggests that the reaction may not involve the adsorption of organics on catalyst surface.
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Affiliation(s)
- Roberto Rosal
- Departamento de Química Analítica e Ingeniería Química, Universidad de Alcalá, E-28771 Alcalá de Henares, Spain.
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Rosal R, Gonzalo MS, Boltes K, Letón P, Vaquero JJ, García-Calvo E. Identification of intermediates and assessment of ecotoxicity in the oxidation products generated during the ozonation of clofibric acid. JOURNAL OF HAZARDOUS MATERIALS 2009; 172:1061-1068. [PMID: 19709806 DOI: 10.1016/j.jhazmat.2009.07.110] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2009] [Revised: 07/05/2009] [Accepted: 07/24/2009] [Indexed: 05/28/2023]
Abstract
The degradation of an aqueous solution of clofibric acid was investigated during catalytic and non-catalytic ozonation. The catalyst, TiO(2), enhanced the production of hydroxyl radicals from ozone and raised the fraction or clofibric acid degraded by hydroxyl radicals. The rate constant for the reaction of clofibric acid and hydroxyl radicals was not affected by the presence of the catalyst. The toxicity of the oxidation products obtained during the reaction was assessed by means of Vibrio fischeri and Daphnia magna tests in order to evaluate the potential formation of toxic by-products. The results showed that the ozonation was enhanced by the presence of TiO(2,) the clofibric acid being removed completely after 15 min at pH 5. The evolution of dissolved organic carbon, specific ultraviolet absorption at 254 nm and the concentration of carboxylic acids monitored the degradation process. The formation of 4-chlorophenol, hydroquinone, 4-chlorocatechol, 2-hydroxyisobutyric acid and three non-aromatic compounds identified as a product of the ring-opening reaction was assessed by exact mass measurements performed by liquid chromatography coupled to time-of-flight mass spectrometry (LC-TOF-MS). The bioassays showed a significant increase in toxicity during the initial stages of ozonation following a toxicity pattern closely related to the formation of ring-opening by-products.
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Affiliation(s)
- Roberto Rosal
- Departamento de Química Analítica e Ingeniería Química, Universidad de Alcalá, E-28771 Alcalá de Henares, Spain.
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