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Nkohla MA, Godongwanaa B, Festerb VG, Caleb OJ. An analytical solution of the effectiveness factor of photocatalytic reactors based on Robin boundary conditions. CHEMICAL ENGINEERING JOURNAL ADVANCES 2023. [DOI: 10.1016/j.ceja.2023.100464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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2
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Mahmoud ZH, AL-Bayati RA, Khadom AA. The efficacy of samarium loaded titanium dioxide (Sm:TiO2) for enhanced photocatalytic removal of rhodamine B dye in natural sunlight exposure. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132267] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Process Intensification in Photocatalytic Decomposition of Formic Acid over a TiO2 Catalyst by Forced Periodic Modulation of Concentration, Temperature, Flowrate and Light Intensity. Processes (Basel) 2021. [DOI: 10.3390/pr9112046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The effect of forced periodic modulation of several input parameters on the rate of photocatalytic decomposition of formic acid over a TiO2 thin film catalyst has been investigated in a continuously stirred tank reactor. The kinetic model was adopted based on the literature and it includes acid adsorption, desorption steps, the formation of photocatalytic active sites and decomposition of the adsorbed species over the active titania sites. A reactor model was developed that describes mass balances of reactive species. The analysis of the reactor was performed with a computer-aided nonlinear frequency response method. Initially, the effect of amplitude and frequency of four input parameters (flowrate, acid concentration, temperature and light intensity) were studied. All single inputs provided only a minor improvement, which did not exceed 4%. However, a modulation of two input parameters, inlet flowrate and the acid molar fraction, considerably improved the acid conversion from 80 to 96%. This is equivalent to a factor of two increase in residence time at steady-state operation at the same temperature and acid concentration.
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4
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Feng Y, Rijnaarts HHM, Yntema D, Gong Z, Dionysiou DD, Cao Z, Miao S, Chen Y, Ye Y, Wang Y. Applications of anodized TiO 2 nanotube arrays on the removal of aqueous contaminants of emerging concern: A review. WATER RESEARCH 2020; 186:116327. [PMID: 32846377 DOI: 10.1016/j.watres.2020.116327] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/19/2020] [Accepted: 08/20/2020] [Indexed: 06/11/2023]
Abstract
The presence of contaminants of emerging concern (CECs) in various water bodies and the associated threats to eco-system and human society have raised increasing concerns. To fight against such a problem, TiO2 photocatalysis is considered to be a powerful tool. In recent decades, TiO2 nanotube array (TNA) fabricated by electrochemical anodization emerged as a viable immobilized catalyst and its applications on CECs removal have gained a considerable amount of research interest. We herein present a critical review on the development of TNA and its applications on the removal of aqueous CECs. In this work, the CECs removal in different TNA based processes, the CECs removal mechanisms, the role of TNA properties, the role of operational parameters, and the role of water matrices are discussed. Moreover, perspectives on the current research progress are presented and recommendations on future research are elaborated.
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Affiliation(s)
- Yanyue Feng
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
| | - Huub H M Rijnaarts
- Sub-Department of Environmental Technology, Wageningen University, Bornse Weilanden 9, 6708WG, Wageningen, the Netherlands
| | - Doekle Yntema
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, the Netherlands
| | - Zhengjun Gong
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, PR China
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (DCEE), 705 Engineering Research Center, University of Cincinnati, Cincinnati, OH 45221-0012, United States
| | - Zhourong Cao
- Chengdu Drainage CO., Ltd, Bisheng Rd. 256, 610039 Chengdu, PR China
| | - Shiyu Miao
- College of Eco-Environmental Engineering, Qinghai University, Xining, 810016, PR China
| | - Yanlong Chen
- School of Ecology and Environment, Northwestern Polytechnical University, 710129 Xi'an, PR China
| | - Yin Ye
- School of Ecology and Environment, Northwestern Polytechnical University, 710129 Xi'an, PR China; Sub-Department of Environmental Technology, Wageningen University, Bornse Weilanden 9, 6708WG, Wageningen, the Netherlands.
| | - Yuheng Wang
- School of Ecology and Environment, Northwestern Polytechnical University, 710129 Xi'an, PR China.
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Spin Coating Immobilisation of C-N-TiO2 Co-Doped Nano Catalyst on Glass and Application for Photocatalysis or as Electron Transporting Layer for Perovskite Solar Cells. COATINGS 2020. [DOI: 10.3390/coatings10111029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Producing active thin films coated on supports resolves many issues of powder-based photo catalysis and energy harvesting. In this study, thin films of C-N-TiO2 were prepared by dynamic spin coating of C-N-TiO2 sol-gel on glass support. The effect of spin speed and sol gel precursor to solvent volume ratio on the film thickness was investigated. The C-N-TiO2-coated glass was annealed at 350 °C at a ramping rate of 10 °C/min with a holding time of 2 hours under a continuous flow of dry N2. The C-N-TiO2 films were characterised by profilometry analysis, light microscopy (LM), and scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS). The outcomes of this study proved that a spin coating technique followed by an annealing process to stabilise the layer could be used for immobilisation of the photo catalyst on glass. The exposure of C-N-TiO2 films to UV radiation induced photocatalytic decolouration of orange II (O.II) dye. The prepared C-N-TiO2 films showed a reasonable power conversion efficiency average (PCE of 9%) with respect to the reference device (15%). The study offers a feasible route for the engineering of C-N-TiO2 films applicable to wastewater remediation processes and energy harvesting in solar cell technologies.
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Bouchareb MKE, Berkani M, Merouani S, Bouhelassa M. Box-Wilson design modeling of photocatalytic degradation of industrial dye and wastewater in semi-pilot solar photoreactor. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:1393-1403. [PMID: 33079718 DOI: 10.2166/wst.2020.405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This work focuses on the treatment of a dye solution, C.I. Basic Blue 41 (BB41), and industrial wastewater by UV/TiO2 photocatalytic process using aqueous catalyst suspensions of titanium dioxide (TiO2), Degussa P25. The procedures were carried out in a semi-pilot scale prototype solar photoreactor under solar radiation. Response surface methodology (RSM) based on Box-Wilson design was applied to assess individual effects of the five main independent parameters: initial dye concentration ([BB41]), TiO2 concentration ([TiO2]), flow rate (Q) initial pH and accumulated solar energy (Qvn) on the decolorization efficiency and to optimise the UV/TiO2 process. Photocatalytic mineralisation was carried out at the optimal conditions found by RSM and results were evaluated by total organic carbon (TOC) abatement for BB41 sloution and industrial wastewater. The optimal conditions found by RSM were: 0.4 g/L, 14.04 mg/L, 1,479.6 L/h, 5.52 and 80 KJ/L for TiO2 concentration, initial dye concentration, flow rate, initial pH and accumulated solar energy, respectively. Photocatalytic mineralisation results show that for accumulated visible solar energy equal to 377.714 kJ/L (after 6 hours of irradiation), under these conditions, the percentage of the initial TOC reduction is about 88% and 85.5% for industrial waste and BB41 solution, respectively.
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Affiliation(s)
- Mohammed Kheir-Eddine Bouchareb
- Environmental Process Engineering Laboratory, Department of Chemical Engineering, Faculty of Process Engineering, Constantine University 3, 25100 Constantine, Algeria E-mail:
| | - Mohammed Berkani
- Biotechnology Laboratory, National Higher School of Biotechnology, BP E66 25100, Constantine, Algeria
| | - Slimane Merouani
- Environmental Process Engineering Laboratory, Department of Chemical Engineering, Faculty of Process Engineering, Constantine University 3, 25100 Constantine, Algeria E-mail:
| | - Mohamed Bouhelassa
- Environmental Process Engineering Laboratory, Department of Chemical Engineering, Faculty of Process Engineering, Constantine University 3, 25100 Constantine, Algeria E-mail:
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7
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Berkani M, Bouchareb MK, Bouhelassa M, Kadmi Y. Photocatalytic Degradation of Industrial Dye in Semi-Pilot Scale Prototype Solar Photoreactor: Optimization and Modeling Using ANN and RSM Based on Box–Wilson Approach. Top Catal 2020. [DOI: 10.1007/s11244-020-01320-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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8
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Ostera JM, Malanga G, Puntarulo S. Assessment of oxidative balance in hydrophilic cellular environment in Chlorella vulgaris exposed to glyphosate. CHEMOSPHERE 2020; 248:125955. [PMID: 32028155 DOI: 10.1016/j.chemosphere.2020.125955] [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: 11/25/2019] [Revised: 01/16/2020] [Accepted: 01/17/2020] [Indexed: 06/10/2023]
Abstract
The studied hypothesis is that glyphosate (GLY) can affect the oxidative balance in the hydrophilic intracellular medium in non-target Chlorella vulgaris cells. Analytical GLY (5 μM) and a commercial product (RUP) (5 μM) supplementation, did not affect the growth profile. Neither in latent (Lag) nor in exponential (Exp) phase of development, there were significant differences in the cellular abundance, evaluated as cell number, after the supplementation with GLY or RUP. The ascorbyl (A•) content was significantly increased in the presence of GLY or RUP, in Lag and Exp phase of growth. No changes were observed in stationary (St) phase after supplementation with either GLY or RUP. Ascorbate (AH-) content was decreased by 30% in Exp phase of development the presence of RUP. In St phase of the development both, the administration of either GLY or RUP decreased the antioxidant content by 34 and 37%, respectively. The supplementation with GLY and RUP lead to a significant 5- and 10-fold increase in Exp phase, respectively in the A•/AH-content ratio, assessed as a damage/protection ratio in the hydrophilic fraction of the cells, as compared to controls. Neither GLY nor RUP affected the ratio in cells in St phase of development. The data presented here showed experimental evidence that suggested that oxidative balance in the hydrophilic environment is affected by GLY, even at the low to medium concentrations currently used. The effect seems as reversible either because of the magnitude of the herbicide-dependent damage or the antioxidant activity activated.
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Affiliation(s)
- Juan M Ostera
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Fisicoquímica, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Buenos Aires, Argentina
| | - Gabriela Malanga
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Fisicoquímica, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Buenos Aires, Argentina
| | - Susana Puntarulo
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Fisicoquímica, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Buenos Aires, Argentina.
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9
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Microfluidic Reactors for Plasmonic Photocatalysis Using Gold Nanoparticles. MICROMACHINES 2019; 10:mi10120869. [PMID: 31835674 PMCID: PMC6952777 DOI: 10.3390/mi10120869] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/05/2019] [Accepted: 12/09/2019] [Indexed: 11/30/2022]
Abstract
This work reports a microfluidic reactor that utilizes gold nanoparticles (AuNPs) for the highly efficient photocatalytic degradation of organic pollutants under visible light. The bottom of microchamber has a TiO2 film covering a layer of AuNPs (namely, TiO2/AuNP film) deposited on the F-doped SnO2 (FTO) substrate. The rough surface of FTO helps to increase the surface area and the AuNPs enables the strong absorption of visible light to excite electron/hole pairs, which are then transferred to the TiO2 film for photodegradation. The TiO2 film also isolates the AuNPs from the solution to avoid detachment and photocorrosion. Experiments show that the TiO2/AuNP film has a strong absorption over 400–800 nm and enhances the reaction rate constant by 13 times with respect to the bare TiO2 film for the photodegradation of methylene blue. In addition, the TiO2/AuNP microreactor exhibits a negligible reduction of photoactivity after five cycles of repeated tests, which verifies the protective function of the TiO2 layer. This plasmonic photocatalytic microreactor draws the strengths of microfluidics and plasmonics, and may find potential applications in continuous photocatalytic water treatment and photosynthesis. The fabrication of the microreactor uses manual operation and requires no photolithography, making it simple, easy, and of low cost for real laboratory and field tests.
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10
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Berkani M, Bouhelassa M, Bouchareb MK. Implementation of a venturi photocatalytic reactor: Optimization of photodecolorization of an industrial azo dye. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2015.07.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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11
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Influence of
$$\hbox {TiO}_{2}$$
TiO
2
structural properties on photocatalytic hydrogen gas production. J CHEM SCI 2019. [DOI: 10.1007/s12039-019-1608-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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An overview of solar/visible light-driven heterogeneous photocatalysis for water purification: TiO2- and ZnO-based photocatalysts used in suspension photoreactors. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2018.11.025] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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13
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Baghbani Ghatar S, Allahyari S, Rahemi N, Tasbihi M. Response Surface Methodology Optimization for Photodegradation of Methylene Blue in a ZnO Coated Flat Plate Continuous Photoreactor. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2018. [DOI: 10.1515/ijcre-2017-0221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this paper, a continuous flat plate photoreactor with ZnO coating was studied in the photodegradation of methylene blue. The structural properties of catalyst were characterized by means of X-ray diffraction, Field emission scanning electron microscopy (FESEM), and energy dispersive X-ray (EDX). The XRD results indicate that high crystalline ZnO particles with average size of 13.5 nm were coated on the glass plate. The thickness of ZnO layer was 39.67 μm and the coating was uniform and crack free. The EDX showed clear border between glass and ZnO layer which confirmed no material transfer between glass and ZnO layer during thermal treatment. The influence of reactor parameters such as the slope of the glass plate, number of UV lamps, distance between lamp and ZnO coated glass plate and flow rate of wastewater was investigated using optimal custom design which is a subset of response surface methodology (RSM). The results indicated that the maximum photodegradation of methylene blue was achieved under the following conditions: plate slope of 9, 3 UVA lamps, 12 ml/s wastewater flow rate and 10 cm distance between lamp and glass plate. The response of surface methodology at optimum conditions was 65.05% while experimental value was 64.66%, showing good agreement between the experimental values and those predicted by the models, with relatively small errors which were only 0.64. The kinetic study was also performed for methylene blue photodegradation at optimum conditions.
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14
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Wang X, Liu M, Yang Z. Coupled model based on radiation transfer and reaction kinetics of gas–liquid–solid photocatalytic mini-fluidized bed. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.04.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Gahlot S, Jeanneau E, Dappozze F, Guillard C, Mishra S. Precursor-mediated synthesis of Cu2−xSe nanoparticles and their composites with TiO2 for improved photocatalysis. Dalton Trans 2018; 47:8897-8905. [DOI: 10.1039/c8dt01625a] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Simple, but effective. Successful isolation and characterization of an intermediate during the reaction of tBu2Se with Cu(TFA)2 establishes the route for the formation of copper selenide NPs and Cu2−xSe–TiO2 composites as active photocatalysts.
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Affiliation(s)
- Sweta Gahlot
- Univ Lyon
- Université Claude Bernard Lyon 1
- CNRS
- IRCELYON-UMR 5256
- 69626 Villeurbanne
| | - Erwann Jeanneau
- Univ Lyon
- Université Claude Bernard Lyon 1
- Centre de Diffractométrie Henri Longchambon
- 69100 Villeurbanne
- France
| | - Frederic Dappozze
- Univ Lyon
- Université Claude Bernard Lyon 1
- CNRS
- IRCELYON-UMR 5256
- 69626 Villeurbanne
| | - Chantal Guillard
- Univ Lyon
- Université Claude Bernard Lyon 1
- CNRS
- IRCELYON-UMR 5256
- 69626 Villeurbanne
| | - Shashank Mishra
- Univ Lyon
- Université Claude Bernard Lyon 1
- CNRS
- IRCELYON-UMR 5256
- 69626 Villeurbanne
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16
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Efect of Ti F surface interaction on the photocatalytic degradation of phenol, aniline and formic acid. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.08.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Özkal CB, Frontistis Z, Antonopoulou M, Konstantinou I, Mantzavinos D, Meriç S. Removal of antibiotics in a parallel-plate thin-film-photocatalytic reactor: Process modeling and evolution of transformation by-products and toxicity. J Environ Sci (China) 2017; 60:114-122. [PMID: 29031440 DOI: 10.1016/j.jes.2016.12.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Revised: 12/08/2016] [Accepted: 12/09/2016] [Indexed: 06/07/2023]
Abstract
Photocatalytic degradation of sulfamethoxazole (SMX) antibiotic has been studied under recycling batch and homogeneous flow conditions in a thin-film coated immobilized system namely parallel-plate (PPL) reactor. Experimentally designed, statistically evaluated with a factorial design (FD) approach with intent to provide a mathematical model takes into account the parameters influencing process performance. Initial antibiotic concentration, UV energy level, irradiated surface area, water matrix (ultrapure and secondary treated wastewater) and time, were defined as model parameters. A full of 25 experimental design was consisted of 32 random experiments. PPL reactor test experiments were carried out in order to set boundary levels for hydraulic, volumetric and defined defined process parameters. TTIP based thin-film with polyethylene glycol+TiO2 additives were fabricated according to pre-described methodology. Antibiotic degradation was monitored by High Performance Liquid Chromatography analysis while the degradation products were specified by LC-TOF-MS analysis. Acute toxicity of untreated and treated SMX solutions was tested by standard Daphnia magna method. Based on the obtained mathematical model, the response of the immobilized PC system is described with a polynomial equation. The statistically significant positive effects are initial SMX concentration, process time and the combined effect of both, while combined effect of water matrix and irradiated surface area displays an adverse effect on the rate of antibiotic degradation by photocatalytic oxidation. Process efficiency and the validity of the acquired mathematical model was also verified for levofloxacin and cefaclor antibiotics. Immobilized PC degradation in PPL reactor configuration was found capable of providing reduced effluent toxicity by simultaneous degradation of SMX parent compound and TBPs.
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Affiliation(s)
- Can Burak Özkal
- Environmental Engineering, Namık Kemal University, Faculty of Engineering, Tekirdag, Turkey.
| | - Zacharias Frontistis
- Department of Chemical Engineering, University of Patras, GR-26504 Patras, Greece.
| | - Maria Antonopoulou
- Department of Environmental & Natural Resources Management, University of Patras, GR-30100 Agrinio, Greece
| | | | | | - Süreyya Meriç
- Environmental Engineering, Namık Kemal University, Faculty of Engineering, Tekirdag, Turkey
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18
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Wang Z, Lin Y, Chen R, Liao Q, Zhu X, An L, He X, Zhang W. A micro membrane-less photoelectrochemical cell for hydrogen and electricity generation in the presence of methanol. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.05.182] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Manassero A, Satuf ML, Alfano OM. Photocatalytic degradation of an emerging pollutant by TiO 2-coated glass rings: a kinetic study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:6031-6039. [PMID: 27215987 DOI: 10.1007/s11356-016-6855-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 05/09/2016] [Indexed: 06/05/2023]
Abstract
This work presents the photocatalytic degradation of the pharmaceutical drug clofibric acid in a fixed-bed reactor filled with TiO2-coated glass rings. Experiments were carried out under UV radiation. A kinetic model that takes into account radiation absorption by means of the local surface rate of photon absorption (LSRPA) has been developed. The LSRPA was obtained from the results of a radiation model. The Monte Carlo method was employed to solve the radiation model, where the interaction between photons and TiO2-coated rings was considered. Data from experiments carried out with rings with different numbers of catalyst coatings and different irradiation levels were used to estimate the parameters of the kinetic model. A satisfactory agreement was obtained between model simulations and experimental results.
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Affiliation(s)
- Agustina Manassero
- Instituto de Desarrollo Tecnológico para la Industria Química, Universidad Nacional del Litoral and Consejo Nacional de Investigaciones Científicas y Técnicas, Güemes 3450, 3000, Santa Fe, Argentina
| | - María Lucila Satuf
- Instituto de Desarrollo Tecnológico para la Industria Química, Universidad Nacional del Litoral and Consejo Nacional de Investigaciones Científicas y Técnicas, Güemes 3450, 3000, Santa Fe, Argentina
| | - Orlando Mario Alfano
- Instituto de Desarrollo Tecnológico para la Industria Química, Universidad Nacional del Litoral and Consejo Nacional de Investigaciones Científicas y Técnicas, Güemes 3450, 3000, Santa Fe, Argentina.
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20
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Camera-Roda G, Loddo V, Palmisano L, Parrino F. Guidelines for the assessment of the rate law of slurry photocatalytic reactions. Catal Today 2017. [DOI: 10.1016/j.cattod.2016.06.050] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Mishra S, Du D, Jeanneau E, Dappozze F, Guillard C, Zhang J, Daniele S. A Facile Molecular Precursor-based Synthesis of Ag2Se Nanoparticles and Its Composites with TiO2for Enhanced Photocatalytic Activity. Chem Asian J 2016; 11:1658-63. [DOI: 10.1002/asia.201600157] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 03/24/2016] [Indexed: 01/06/2023]
Affiliation(s)
- Shashank Mishra
- Université Lyon 1; IRCELYON, CNRS-UMR 5256; 2 Avenue A. Einstein 69626 Villeurbanne France
| | - Dan Du
- Université Lyon 1; IRCELYON, CNRS-UMR 5256; 2 Avenue A. Einstein 69626 Villeurbanne France
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Erwann Jeanneau
- Université Lyon 1; Centre de Diffractométrie Henri Longchambon; 5 rue de La Doua 69100 Villeurbanne France
| | - Frederic Dappozze
- Université Lyon 1; IRCELYON, CNRS-UMR 5256; 2 Avenue A. Einstein 69626 Villeurbanne France
| | - Chantal Guillard
- Université Lyon 1; IRCELYON, CNRS-UMR 5256; 2 Avenue A. Einstein 69626 Villeurbanne France
| | - Jinlong Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Stéphane Daniele
- Université Lyon 1; IRCELYON, CNRS-UMR 5256; 2 Avenue A. Einstein 69626 Villeurbanne France
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22
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Das S, Srivastava VC. Microfluidic-based photocatalytic microreactor for environmental application: a review of fabrication substrates and techniques, and operating parameters. Photochem Photobiol Sci 2016; 15:714-30. [DOI: 10.1039/c5pp00469a] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
This article gives an overview of photocatalytic microreactors with an application in environmental science, in particular, the degradation of different toxic dyes within microchannels.
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Affiliation(s)
- Susmita Das
- Department of Chemical Engineering
- Indian Institute of Technology Roorkee
- Roorkee
- India
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23
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A reaction engineering approach to kinetic analysis of photocatalytic reactions in slurry systems. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.05.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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24
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Salvadores F, Minen RI, Carballada J, Alfano OM, Ballari MM. Kinetic Study of Acetaldehyde Degradation Applying Visible Light Photocatalysis. Chem Eng Technol 2015. [DOI: 10.1002/ceat.201500507] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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25
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Valari M, Antoniadis A, Mantzavinos D, Poulios I. Photocatalytic reduction of Cr(VI) over titania suspensions. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.10.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Powder semiconductor photocatalysis in aqueous solution: An overview of kinetics-based reaction mechanisms. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2015.04.011] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Manassero A, Satuf ML, Alfano OM. Kinetic modeling of the photocatalytic degradation of clofibric acid in a slurry reactor. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:926-937. [PMID: 24622987 DOI: 10.1007/s11356-014-2682-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Accepted: 02/19/2014] [Indexed: 06/03/2023]
Abstract
A kinetic study of the photocatalytic degradation of the pharmaceutical clofibric acid is presented. Experiments were carried out under UV radiation employing titanium dioxide in water suspension. The main reaction intermediates were identified and quantified. Intrinsic expressions to represent the kinetics of clofibric acid and the main intermediates were derived. The modeling of the radiation field in the reactor was carried out by Monte Carlo simulation. Experimental runs were performed by varying the catalyst concentration and the incident radiation. Kinetic parameters were estimated from the experiments by applying a non-linear regression procedure. Good agreement was obtained between model predictions and experimental data, with an error of 5.9 % in the estimations of the primary pollutant concentration.
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Affiliation(s)
- Agustina Manassero
- Instituto de Desarrollo Tecnológico para la Industria Química, Universidad Nacional del Litoral and Consejo Nacional de Investigaciones Científicas y Técnicas, Güemes 3450, Santa Fe, 3000, Argentina
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28
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Residence time distribution analysis and optimization of photocatalysis of phenazopyridine using immobilized TiO2 nanoparticles in a rectangular photoreactor. J IND ENG CHEM 2013. [DOI: 10.1016/j.jiec.2013.01.019] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Photocatalysis by Nanoparticles of Titanium Dioxide for Drinking Water Purification: A Conceptual and State-of-Art Review. ACTA ACUST UNITED AC 2013. [DOI: 10.4028/www.scientific.net/msf.764.130] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To overcome the water pollution problems, and to meet stringent environmental regulations, scientist and researchers have been focusing on the development of new water purification processes. One such group of new technologies is advanced oxidation processes (AOPs). Among the AOPs, titanium dioxide photocatalysis has been widely studied on lab scale by the researchers for decontamination of drinking water. In the present chapter, a conceptual as well as state-of-art review of titanium dioxide photocatalysis for water purification has been discussed.
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Rastegar M, Shadbad KR, Khataee AR, Pourrajab R. Optimization of photocatalytic degradation of sulphonated diazo dye C.I. Reactive Green 19 using ceramic-coated TiO2 nanoparticles. ENVIRONMENTAL TECHNOLOGY 2012; 33:995-1003. [PMID: 22720426 DOI: 10.1080/09593330.2011.604859] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Optimization of photocatalytic degradation of C.I. Reactive Green 19 (RG 19) under UV light irradiation using ceramic-coated TiO2 nanoparticles in a continuous circulation rectangular photoreactor was studied. The used catalyst was TiO2 Millennium PC-500 (crystallite mean size 8 nm) immobilized on ceramic plates. A central composite design was used for optimization of the UV/TiO2 process. Predicted values of decolorization efficiency were found to be in good agreement with experimental values (R2 = 0.97 and Adj-R2 = 0.91). Optimization results showed that maximum decolorization efficiency was achieved at the optimum conditions of: initial dye concentration 10 mg/L, UV light intensity 47.2 W/m2, flow rate 150 mL/min and reaction time 240 min. Photocatalytic mineralization of RG 19 was monitored by chemical oxygen demand (COD) decrease and changes in the UV-Vis spectrum.
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Affiliation(s)
- M Rastegar
- Water and Wastewater Company of East Azerbaijan, Tabriz, Iran
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31
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Seger B, (Max) Lu GQ, Wang L. Electrical power and hydrogen production from a photo-fuel cell using formic acid and other single-carbon organics. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm16635f] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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The effect of photon source on heterogeneous photocatalytic oxidation of ethanol by a silica–titania composite. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2011.09.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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33
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Charles G, Roques-Carmes T, Becheikh N, Falk L, Commenge JM, Corbel S. Determination of kinetic constants of a photocatalytic reaction in micro-channel reactors in the presence of mass-transfer limitation and axial dispersion. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2011.08.019] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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34
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Novel integrated reactor for evaluation of activity of supported photocatalytic thin films: Case of methylene blue degradation on TiO2 and nickel modified TiO2 under UV and visible light. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2010.11.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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35
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Satuf ML, Pierrestegui MJ, Rossini L, Brandi RJ, Alfano OM. Kinetic modeling of azo dyes photocatalytic degradation in aqueous TiO2 suspensions. Toxicity and biodegradability evaluation. Catal Today 2011. [DOI: 10.1016/j.cattod.2010.11.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Fathinia M, Khataee A, Zarei M, Aber S. Comparative photocatalytic degradation of two dyes on immobilized TiO2 nanoparticles: Effect of dye molecular structure and response surface approach. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcata.2010.09.018] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Khataee AR, Fathinia M, Aber S, Zarei M. Optimization of photocatalytic treatment of dye solution on supported TiO2 nanoparticles by central composite design: intermediates identification. JOURNAL OF HAZARDOUS MATERIALS 2010; 181:886-897. [PMID: 20566244 DOI: 10.1016/j.jhazmat.2010.05.096] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Revised: 05/19/2010] [Accepted: 05/20/2010] [Indexed: 05/29/2023]
Abstract
Optimization of photocatalytic degradation of C.I. Basic Blue 3 (BB3) under UV light irradiation using TiO(2) nanoparticles in a rectangular photoreactor was studied. The investigated TiO(2) was Millennium PC-500 (crystallites mean size 5-10 nm) immobilized on non-woven paper. Central composite design was used for optimization of UV/TiO(2) process. Predicted values of decolorization efficiency were found to be in good agreement with experimental values (R(2)=0.9686 and Adj-R(2)=0.9411). Optimization results showed that maximum decolorization efficiency was achieved at the optimum conditions: initial dye concentration 10mg/L, UV light intensity 47.2 W/m(2), flow rate 100 mL/min and reaction time 120 min. Photocatalytic mineralization of BB3 was monitored by total organic carbon (TOC) decrease, and changes in UV-vis and FT-IR spectra. The photodegradation compounds were analyzed by UV-vis, FT-IR and GC-mass techniques. The degradation pathway of BB3 was proposed based on the identified compounds.
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Affiliation(s)
- A R Khataee
- Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
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38
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Ballari MDLM, Alfano OM, Cassano AE. Mass transfer limitations in slurry photocatalytic reactors: Experimental validation. Chem Eng Sci 2010. [DOI: 10.1016/j.ces.2010.04.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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39
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Manassero A, Passalia C, Negro AC, Cassano AE, Zalazar CS. Glyphosate degradation in water employing the H2O2/UVC process. WATER RESEARCH 2010; 44:3875-82. [PMID: 20627354 DOI: 10.1016/j.watres.2010.05.004] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Revised: 04/03/2010] [Accepted: 05/03/2010] [Indexed: 05/29/2023]
Abstract
Glyphosate is the organophosphate herbicide most widely used in the world. Any form of spill or discharge, even if unintentional, can be transferred to the water due to its high solubility. The combination of hydrogen peroxide and UV radiation could be a suitable option to decrease glyphosate concentration to acceptable limits. In this work, the effects of initial pH, hydrogen peroxide initial concentration, and incident radiation in glyphosate degradation were studied. The experimental device was a cylinder irradiated with two tubular, germicidal lamps. Conversion of glyphosate increases significantly from pH = 3-7. From this value on, the increase becomes much less noticeable. The reaction rate depends on the initial herbicide concentration and has an optimum plateau of a hydrogen peroxide to glyphosate molar concentration ratio between 7 and 19. The expected non linear dependence on the irradiation rate was observed. The identification of critical reaction intermediaries, and the quantification of the main end products were possible and it led to propose a plausible degradation path. The achieved quantification of the mineralization extent is a positive indicator for the possible application of a rather simple technology for an in situ solution for some of the problems derived from the intensive use of glyphosate.
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Affiliation(s)
- A Manassero
- INTEC (Universidad Nacional del Litoral and CONICET), Güemes 3450, 3000 Santa Fe, Argentina
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40
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Liu S, Sun X, Li JG, Li X, Xiu Z, Yang H, Xue X. Fluorine- and iron-modified hierarchical anatase microsphere photocatalyst for water cleaning: facile wet chemical synthesis and wavelength-sensitive photocatalytic reactivity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:4546-4553. [PMID: 19938805 DOI: 10.1021/la903494r] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
High photocatalytic efficiency, easy recovery, and no biological toxicity are three key properties related to the practical application of anatase photocatalyst in water cleaning, but seem to be incompatible. Nanoparticles-constructed hierarchical anatase microspheres with high crystallinity and good dispersion prepared in this study via one-step solution processing at 90 degrees C under atmospheric pressure by using ammonium fluotitanate as the titanium source and urea as the precipitant can reconcile these three requirements. The hierarchical microspheres were found to grow via an aggregative mechanism, and contact recrystallization occurred at high additions of the FeCl(3) electrolyte into the reaction system. Simultaneous incorporation of fluorine and iron into the TiO(2) matrix was confirmed by combined analysis of X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and UV-vis absorption spectroscopy. Surface structure and morphology changes of the microspheres induced by high-temperature annealing were clearly observed by field-emission scanning electron microscopy, especially for the phase-transformed particles. The original nanoparticles-constructed rough surfaces partially became smooth, resulting in a sharp drop in photocatalytic efficiency. Interestingly, iron loading has detrimental effects on the visible-light photocatalytic activity of both the as-prepared and the postannealed anatase microspheres but greatly enhances the photocatalytic activity of the as-prepared anatase microspheres under UV irradiation. No matter under UV or visible-light irradiation, the fluorine-loaded anatase microspheres and especially the postannealed ones show excellent photocatalytic performance. The underlying mechanism of fluorine and iron loading on the photocatalytic efficacy of the anatase microspheres was discussed in detail. Beyond photocatalytic applications, this kind of material is of great importance to the assembling of photoactive photonic crystal that can control light motion.
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Affiliation(s)
- Shaohong Liu
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
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41
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Mitoraj D, Beránek R, Kisch H. Mechanism of aerobic visible light formic acid oxidation catalyzed by poly(tri-s-triazine) modified titania. Photochem Photobiol Sci 2010; 9:31-8. [DOI: 10.1039/b9pp00052f] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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de los Milagros Ballari M, Alfano OO, Cassano AE. Photocatalytic Degradation of Dichloroacetic Acid. A Kinetic Study with a Mechanistically Based Reaction Model. Ind Eng Chem Res 2009. [DOI: 10.1021/ie801194f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- María de los Milagros Ballari
- INTEC (Universidad Nacional del Litoral and CONICET), Colectora de la Ruta Nacional No. 168, Km 472.5, Edificio INTEC I, (3000) Santa Fe - Argentina
| | - Orlando O. Alfano
- INTEC (Universidad Nacional del Litoral and CONICET), Colectora de la Ruta Nacional No. 168, Km 472.5, Edificio INTEC I, (3000) Santa Fe - Argentina
| | - Alberto E. Cassano
- INTEC (Universidad Nacional del Litoral and CONICET), Colectora de la Ruta Nacional No. 168, Km 472.5, Edificio INTEC I, (3000) Santa Fe - Argentina
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43
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Alfano OM, Cassano AE. Scaling-Up of Photoreactors. ADVANCES IN CHEMICAL ENGINEERING - PHOTOCATALYTIC TECHNOLOGIES 2009. [DOI: 10.1016/s0065-2377(09)00407-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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44
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Barka N, Qourzal S, Assabbane A, Nounah A, Ait-Ichou Y. Factors influencing the photocatalytic degradation of Rhodamine B by TiO2-coated non-woven paper. J Photochem Photobiol A Chem 2008. [DOI: 10.1016/j.jphotochem.2007.10.022] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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45
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46
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The “Direct–Indirect” model: An alternative kinetic approach in heterogeneous photocatalysis based on the degree of interaction of dissolved pollutant species with the semiconductor surface. Catal Today 2007. [DOI: 10.1016/j.cattod.2007.08.002] [Citation(s) in RCA: 117] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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Beranek R, Neumann B, Sakthivel S, Janczarek M, Dittrich T, Tributsch H, Kisch H. Exploring the electronic structure of nitrogen-modified TiO2 photocatalysts through photocurrent and surface photovoltage studies. Chem Phys 2007. [DOI: 10.1016/j.chemphys.2007.05.022] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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48
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Yang L, Liu Z, Shi J, Hu H, Shangguan W. Design consideration of photocatalytic oxidation reactors using TiO2-coated foam nickels for degrading indoor gaseous formaldehyde. Catal Today 2007. [DOI: 10.1016/j.cattod.2007.06.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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49
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Lindstrom H, Wootton R, Iles A. High surface area titania photocatalytic microfluidic reactors. AIChE J 2007. [DOI: 10.1002/aic.11096] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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50
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M. Stokke J, Mazyck DW, Wu C, Sheahan R. Photocatalytic oxidation of methanol using silica-titania composites in a packed-bed reactor. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/ep.10164] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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