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Recent Developments in Photocatalytic Nanotechnology for Purifying Air Polluted with Volatile Organic Compounds: Effect of Operating Parameters and Catalyst Deactivation. Catalysts 2023. [DOI: 10.3390/catal13020407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
Photocatalytic oxidation (PCO) is a successful method for indoor air purification, especially for removing low-concentration pollutants. Volatile organic compounds (VOCs) form a class of organic pollutants that are released into the atmosphere by consumer goods or via human activities. Once they enter the atmosphere, some might combine with other gases to create new air pollutants, which can have a detrimental effect on the health of living beings. This review focuses on current developments in the degradation of indoor pollutants, with an emphasis on two aspects of PCO: (i) influence of environmental (external) conditions; and (ii) catalyst deactivation and possible solutions. TiO2 is widely used as a photocatalyst in PCO because of its unique properties. Here, the potential effects of the operating parameters, such as the nature of the reactant, catalyst support, light intensity, and relative humidity, are extensively investigated. Then the developments and limitations of the PCO technique are highlighted, especially photocatalyst deactivation. Furthermore, the nature and deactivation mechanisms of photocatalysts are discussed, with possible solutions for reducing catalyst deactivation. Finally, the challenges and future directions of PCO technology for the elimination of indoor pollutants are compared and summarized.
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Abidi M, Abou Saoud W, Bouzaza A, Hajjaji A, Bessais B, Wolbert D, Assadi A, Rtimi S. Dynamics of VOCs degradation and bacterial inactivation at the interface of AgxO/Ag/TiO2 prepared by HiPIMS under indoor light. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114321] [Citation(s) in RCA: 0] [Impact Index Per Article: 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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Serhane Y, Belkessa N, Bouzaza A, Wolbert D, Assadi AA. Continuous air purification by front flow photocatalytic reactor: Modelling of the influence of mass transfer step under simulated real conditions. CHEMOSPHERE 2022; 295:133809. [PMID: 35122816 DOI: 10.1016/j.chemosphere.2022.133809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 01/03/2022] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
In this work, a solution for the treatment of toxic gases based on a photocatalytic process using TiO2 coated on a cellulosic support, has been investigated. Here, cyclohexane was chosen as the reference for testing its removal efficiency via a continuous front flow reactor as type A anti-gas filters. The photocatalytic support was firstly characterized by EDX, to confirm its elemental composition. Then, the experiments were carried out, starting with a batch reactor in order to evaluate the degradation efficiency of the photocatalytic media, as well as the monitoring of the photocatalytic process which allowed the establishing of a carbon mass balance corresponding to the stoichiometric number of our target pollutant. The transition to a continuous treatment with a front flow reactor aims to highlight the influence of the input concentration (0.29-1.78 mM m-3) under different flow rates (12, 18 and 36 L min-1). The relative humidity effect was also investigated (from 5 to 90% of humidity) where an optimum rate was obtained around 35-45%. In addition, the mineralization rate was monitored. The major rates obtained were for a cyclohexane input concentration of 0.29 mM m-3 in wet condition (38%) at an air flow rate of 18 L min-1, where the CO2 selectivity reached 77% for an abatement of 62%. In order to understand the limiting steps of the photocatalytic process, a model considering the reactor geometry and the hydraulic flow was developed. The obtained results showed that the mass transfer must be considered in the photocatalytic process for a continuous treatment. The Langmuir-Hinshelwood bimolecular model was also developed to represent the influence of the humidity.
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Affiliation(s)
- Youcef Serhane
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Nacer Belkessa
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Abdelkrim Bouzaza
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Dominique Wolbert
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Aymen Amin Assadi
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
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Dual Use of Copper-Modified TiO2 Nanotube Arrays as Material for Photocatalytic NH3 Degradation and Relative Humidity Sensing. COATINGS 2021. [DOI: 10.3390/coatings11121500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this paper, we emphasized the dual application of Cu-modified vertically aligned TiO2 nanotube arrays as photocatalyst and a relative humidity sensor. The TiO2 nanotube arrays were obtained by anodization of the titanium layer prepared using radio frequency magnetron sputtering (RFMS) and modified with different copper concentrations (0.5, 1, 1.5, and 2 M) by a wet-impregnation method. The sample modified with 2 M Cu(NO3)2 solution showed the highest efficiency for the NH3 photocatalytic degradation and the most pronounced humidity response in comparison to the other studied samples. In order to investigate the structure and impact of Cu modification, X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS) were used. The photocatalytic activity and the kinetic study of ammonia oxidation were studied in a mini-photocatalytic wind tunnel reactor (MWPT), while relative humidity sensing was examined by impedance spectroscopy (IS). Higher NH3 oxidation was a direct consequence of the increased generation of •OH radicals obtained by a more efficient photogenerated charge separation, which is correlated with the increase in the DC conductivity.
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Khezami L, Nguyen-Tri P, Saoud WA, Bouzaza A, El Jery A, Duc Nguyen D, Gupta VK, Assadi AA. Recent progress in air treatment with combined photocatalytic/plasma processes: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 299:113588. [PMID: 34488111 DOI: 10.1016/j.jenvman.2021.113588] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 08/12/2021] [Accepted: 08/20/2021] [Indexed: 05/22/2023]
Abstract
Nowadays, air pollution is an increasingly important topic, as environmental regulations require limiting pollutant emissions. This problem requires new techniques to reduce emissions by either improving the current emission control systems and processes or installing new hybrid treatment systems. These are of broad diversity, and every system has its advantages and disadvantages. The tendency is, accordingly, to combine various techniques to achieve more acceptable and suitable treatment. Recent studies suggest that the combination of photocatalysis and plasma in a reactor can offer attractive pollutant treatment efficiency with a minimum of partially oxidized by-products than that of these processes taken separately. However, there is little review of the capability of this pairing to treat different brands of pollutants. Besides, available data concerning reactor design with flows treated 10 to 1000 times higher than those studied at the lab scale. This review paid particular attention to determine the reaction mechanisms in terms of engineering and design of combination reactors (plasma and catalysis). Likewise, we developed the effect of critical parameters such as pollutant load, relative humidity, and flow rate to understand the degradation kinetics of specific pollutants individually by using plasma and photocatalysis. Additionally, this review compares different designs of cold plasma reactors combination with heterogeneous catalysis with special attention on synergistic and antagonistic effects of using plasma and photocatalysis processes at the laboratory, pilot, and industrial scales. Therefore, the elements discussed in this review stick well to the first theme on pollution prevention of the special issue concerning pollution prevention and the application of clean technologies to promote a circular (bio) economy.
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Affiliation(s)
- Lotfi Khezami
- LaNSER, Research and Technology Centre of Energy (CRTEn), BorjCedriaTechnopark, BP.95, Hammam-Lif, 2050, Tunisia; Department of Chemistry, College of Sciences, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box 5701, Riyadh, 11432, Saudi Arabia
| | - Phuong Nguyen-Tri
- Laboratory of Advanced Materials for Energy and Environment, Université Du Québec à Trois-Rivières (UQTR), 3351, boul. des Forges, C.P. 500, Trois-Rivières, Québec, G9A 5H7, Canada.
| | - Wala Abdou Saoud
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes (ENSCR), Centre National de la Recherche Scientifique (CNRS), UMR 6226, 11 allée de Beaulieu, 35708, Rennes, France
| | - Abdelkrim Bouzaza
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes (ENSCR), Centre National de la Recherche Scientifique (CNRS), UMR 6226, 11 allée de Beaulieu, 35708, Rennes, France
| | - Atef El Jery
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha, 61411, Saudi Arabia
| | - D Duc Nguyen
- Department of Environmental Energy Engineering, Kyonggi University, Room 410, 2nd Engineering Building,154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16227, South Korea; Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam
| | - Vijai Kumar Gupta
- Biorefining and Advanced Materials Research Center, Scotland's Rural College (SRUC), Kings Buildings, West Mains Road, Edinburgh, EH9 3JG, UK
| | - Aymen Amine Assadi
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes (ENSCR), Centre National de la Recherche Scientifique (CNRS), UMR 6226, 11 allée de Beaulieu, 35708, Rennes, France.
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Malayeri M, Lee CS, Niu J, Zhu J, Haghighat F. Kinetic and reaction mechanism of generated by-products in a photocatalytic oxidation reactor: Model development and validation. JOURNAL OF HAZARDOUS MATERIALS 2021; 419:126411. [PMID: 34182424 DOI: 10.1016/j.jhazmat.2021.126411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 06/11/2021] [Accepted: 06/12/2021] [Indexed: 06/13/2023]
Abstract
Photocatalytic oxidation is a promising technology to control air pollution. However, the formation of hazardous by-products hinders the commercialization application of this technology. This paper reports the development of a novel by-products predictive model considering the mass transfer of the pollutant in the gas phase and kinetic reaction in the solid phase. Two challenge compounds from ketone group (acetone and methyl ethyl ketone) were examined for model validation in a continuous Photocatalytic Oxidation (PCO) reactor with TiO2 coated on silica fiber felts. A possible reaction pathway for degradation of each challenge compound was proposed based on identified by-products using analytical methods (GC-MS and HPLC). Formaldehyde, Acetaldehyde, Propionaldehyde, Ethanol, and acetic acid were detected as by-products of the Acetone and Methyl Ethyl Ketone in the PCO reactor. Different possible reaction rate scenarios were evaluated to find the best expression fitted to experimental data at the steady-state condition. The obtained reaction coefficients were then used to validate the model under various operating conditions, namely concentration, relative humidity, irradiation, and velocity variations. Higher concentration and irradiation, as well as lower relative humidity and velocity, resulted in more by-products generation. It was also observed that with enhancing residence time, mineralization efficiency (or CO2 formation) and by-products generation increases through PCO reaction. The model validation provided acceptable accuracy for both steady-state and transient conditions. Finally, the Health Risk Index was used to investigate the implications of generated by-products on human health under varying operating conditions.
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Affiliation(s)
- Mojtaba Malayeri
- Energy and Environment Group, Department of Building, Civil and Environment Engineering, Concordia University, Montreal, Canada
| | - Chang-Seo Lee
- Energy and Environment Group, Department of Building, Civil and Environment Engineering, Concordia University, Montreal, Canada
| | - Jianjun Niu
- Exposure and Biomonitoring Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
| | - Jiping Zhu
- Exposure and Biomonitoring Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Canada
| | - Fariborz Haghighat
- Energy and Environment Group, Department of Building, Civil and Environment Engineering, Concordia University, Montreal, Canada.
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7
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Daigo K, Akama R, Unno N, Satake SI, Taniguchi J. Impact of Water Treatment Reactor using TiO<sub>2</sub>-coated Micropillar Made by UV-NIL. J PHOTOPOLYM SCI TEC 2021. [DOI: 10.2494/photopolymer.34.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kazuki Daigo
- Department of Applied Electronics, Tokyo University of Science
| | - Ryota Akama
- Department of Applied Electronics, Tokyo University of Science
| | - Noriyuki Unno
- Department of Mechanical Engineering, Sanyo-Onoda City University
| | | | - Jun Taniguchi
- Department of Applied Electronics, Tokyo University of Science
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Grčić I, Marčec J, Radetić L, Radovan AM, Melnjak I, Jajčinović I, Brnardić I. Ammonia and methane oxidation on TiO 2 supported on glass fiber mesh under artificial solar irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:18354-18367. [PMID: 32556993 DOI: 10.1007/s11356-020-09561-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 06/01/2020] [Indexed: 06/11/2023]
Abstract
In this work, we present the application of solar photocatalysis for air purification including toxic substances such as ammonia and methane normally related to emissions from agriculture (e.g., poultry and cattle farms), landfills, etc. The study was done in three different laboratory and semi-pilot scale reactors: annular reactor (AR), mini-photocatalytic wind tunnel (MPWT), and photocatalytic wind tunnel (PWT). Reactors present a physical model for estimation of air-borne pollutant degradation over TiO2-based photocatalytic layer in respect to optimal operating conditions (relative humidity, air/gas flow, and feed concentration). All studies were performed under artificial solar irradiation with different portions of UVB and UVA light. The application of solar photocatalysis for air purification was evaluated based on thorough monitoring of pollutants in inlet and outlet streams. The kinetic study resulted with intrinsic reaction rate constants: kp,int,NH3 = (3.05 ± 0.04) × 10-3 cm4.5 mW-0.5 g-1 min-1 and kp,int,CH4 = (1.81 ± 0.02) × 10-2 cm4.5 mW-0.5 g-1 min-1, calculated using axial dispersion model including mass transfer considerations and first-order reaction rate kinetics with photon absorption effects. The results of photocatalytic oxidation of NH3 and CH4 confirmed continuous reduction of pollutant content in the air stream due to the oxidation of NH3 to N2 and CH4 to CO and CO2, respectively. The application of solar photocatalysis in outdoor air protection is still a pioneering work in the field, and the results obtained in this work represent a good basis for sizing large-scale devices and applying them to prevent further environmental pollution. In the current study, a TiO2 P25 supported on a glass fiber mesh was prepared from commercially available materials. The system designed in this way is easy to perform, operate, and relatively inexpensive.
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Affiliation(s)
- Ivana Grčić
- Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000, Varaždin, Croatia.
| | - Jan Marčec
- Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000, Varaždin, Croatia
| | - Lucija Radetić
- Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000, Varaždin, Croatia
| | - Ana-Maria Radovan
- Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000, Varaždin, Croatia
| | - Ivana Melnjak
- Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000, Varaždin, Croatia
| | - Igor Jajčinović
- Faculty of Metallurgy, University of Zagreb, Aleja narodnih heroja 3, 44000, Sisak, Croatia
| | - Ivan Brnardić
- Faculty of Metallurgy, University of Zagreb, Aleja narodnih heroja 3, 44000, Sisak, Croatia
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Simultaneous removal of bacteria and volatile organic compounds on Cu2O-NPs decorated TiO2 nanotubes: Competition effect and kinetic studies. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112722] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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10
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Li J, Chen R, Cui W, Dong X, Wang H, Kim KH, Chu Y, Sheng J, Sun Y, Dong F. Synergistic Photocatalytic Decomposition of a Volatile Organic Compound Mixture: High Efficiency, Reaction Mechanism, and Long-Term Stability. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00693] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jieyuan Li
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Ruimin Chen
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Wen Cui
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
- The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
| | - Xing’an Dong
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Hong Wang
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Korea
| | - Yinghao Chu
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Jianping Sheng
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Yanjuan Sun
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Fan Dong
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
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Effects of UV-A Light Treatment on Ammonia, Hydrogen Sulfide, Greenhouse Gases, and Ozone in Simulated Poultry Barn Conditions. ATMOSPHERE 2020. [DOI: 10.3390/atmos11030283] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Gaseous emissions, a side effect of livestock and poultry production, need to be mitigated to improve sustainability. Emissions of ammonia (NH3), hydrogen sulfide (H2S), greenhouse gases (GHGs), and odorous volatile organic compounds (VOCs) have a detrimental effect on the environment, climate, and quality of life in rural communities. We are building on previous research to bring advanced oxidation technologies from the lab to the farm. To date, we have shown that ultraviolet A (UV-A) has the potential to mitigate selected odorous gases and GHGs in the context of swine production. Much less research on emissions mitigation has been conducted in the context of poultry production. Thus, the study objective was to investigate whether the UV-A can mitigate NH3, H2S, GHGs, and O3 in the simulated poultry barn environment. The effects of several variables were tested: the presence of photocatalyst, relative humidity, treatment time, and dust accumulation under two different light intensities (facilitated with fluorescent and light-emitting diode, LED, lamps). The results provide evidence that photocatalysis with TiO2 coating and UV-A light can reduce gas concentrations of NH3, CO2, N2O, and O3, without a significant effect on H2S and CH4. The particular % reduction depends on the presence of photocatalysts, relative humidity (RH), light type (intensity), treatment time, and dust accumulation on the photocatalyst surface. In the case of NH3, the reduction varied from 2.6–18.7% and was affected by RH and light intensity. The % reduction of NH3 was the highest at 12% RH and increased with treatment time and light intensity. The % reduction of NH3 decreased with the accumulation of poultry dust. The % reduction for H2S had no statistical difference under any experimental conditions. The proposed treatment of NH3 and H2S was evaluated for a potential impact on important ambient air quality parameters, the possibility of simultaneously mitigating or generating GHGs. There was no statistically significant change in CH4 concentrations under any experimental conditions. CO2 was reduced at 3.8%–4.4%. N2O and O3 concentrations were reduced by both direct photolysis and photocatalysis, with the latter having greater % reductions. As much as 6.9–12.2% of the statistically-significant mitigation of N2O was observed. The % reduction for O3 ranged from 12.4–48.4%. The results warrant scaling up to a pilot-scale where the technology could be evaluated with economic analyses.
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Zhang L, Moralejo C, Anderson WA. A review of the influence of humidity on photocatalytic decomposition of gaseous pollutants on TiO
2
‐based catalysts. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23652] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Lianfeng Zhang
- Department of Chemical EngineeringUniversity of Waterloo Waterloo Ontario Canada
- Laboratory of Ecological and Environmental ProtectionResearch Institute of Tsinghua University in Shenzhen Shenzhen China
| | - Carol Moralejo
- Department of Chemical EngineeringUniversity of Waterloo Waterloo Ontario Canada
| | - William A. Anderson
- Department of Chemical EngineeringUniversity of Waterloo Waterloo Ontario Canada
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Visan A, van Ommen JR, Kreutzer MT, Lammertink RGH. Photocatalytic Reactor Design: Guidelines for Kinetic Investigation. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b00381] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aura Visan
- Soft Matter, Fluidics and Interfaces, MESA+Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
| | - J. Ruud van Ommen
- Chemical Engineering Department, TU Delft Process Technology Institute, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Michiel T. Kreutzer
- Chemical Engineering Department, TU Delft Process Technology Institute, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Rob G. H. Lammertink
- Soft Matter, Fluidics and Interfaces, MESA+Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
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Zeghioud H, Assadi AA, Khellaf N, Djelal H, Amrane A, Rtimi S. Reactive species monitoring and their contribution for removal of textile effluent with photocatalysis under UV and visible lights: Dynamics and mechanism. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.07.031] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Elfalleh W, Assadi A, Bouzaza A, Wolbert D, Kiwi J, Rtimi S. Innovative and stable TiO 2 supported catalytic surfaces removing aldehydes under UV-light irradiation. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.04.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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Brancher M, Franco D, de Melo Lisboa H. Photocatalytic oxidation of H2S in the gas phase over TiO2-coated glass fiber filter. ENVIRONMENTAL TECHNOLOGY 2016; 37:2852-2864. [PMID: 26998728 DOI: 10.1080/09593330.2016.1167250] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 03/13/2016] [Indexed: 06/05/2023]
Abstract
To promote the photocatalytic oxidation (PCO) of hydrogen sulfide (H2S) in the gas phase, TiO2-coated glass fiber filters were packed in an annular photoreactor. Glass fibers coated with TiO2 thin films were characterized structurally and morphologically by field emission gun scanning electron microscopy (FEG-SEM), scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectroscopy (EDS) and X-ray diffractometry (XRD). Flow rate and H2S inlet concentration were evaluated to determine the performance of the reactor. Removal efficiencies up to 99% were achieved for flow rate of 25 L h(-1) (residence time of 121 s) and H2S inlet concentration from 12 to 14 ppmv. The long-term experiment presented H2S removal of 89% for 16 h. After 28 h of continuous use, H2S degradation was observed at 64%, which suggests that the photocatalyst was losing activity due to deactivation. Moreover, the kinetics of the PCO of H2S according to the Langmuir-Hinshelwood (L-H) approach along with the mass balance of a plug-flow reactor was modeled. The reaction constant (k) was calculated at approximately 10.5 μmol m(-3) s(-1) and the adsorption constant (K) of approximately 5263 m(-3) mol with linearity (R2) of 0.98.
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Affiliation(s)
- Marlon Brancher
- a Laboratório de Controle da Qualidade do Ar (LCQAr), Departamento de Engenharia Sanitária e Ambiental (ENS) , Universidade Federal de Santa Catarina (UFSC) , Florianópolis , Brasil
| | - Davide Franco
- a Laboratório de Controle da Qualidade do Ar (LCQAr), Departamento de Engenharia Sanitária e Ambiental (ENS) , Universidade Federal de Santa Catarina (UFSC) , Florianópolis , Brasil
| | - Henrique de Melo Lisboa
- a Laboratório de Controle da Qualidade do Ar (LCQAr), Departamento de Engenharia Sanitária e Ambiental (ENS) , Universidade Federal de Santa Catarina (UFSC) , Florianópolis , Brasil
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17
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Zeghioud H, Khellaf N, Djelal H, Amrane A, Bouhelassa M. Photocatalytic Reactors Dedicated to the Degradation of Hazardous Organic Pollutants: Kinetics, Mechanistic Aspects, and Design – A Review. CHEM ENG COMMUN 2016. [DOI: 10.1080/00986445.2016.1202243] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Hichem Zeghioud
- Department of Process Engineering, Faculty of Engineering, Badji Mokhtar University, Annaba, Algeria
- Laboratory of Organic Synthesis-Modeling and Optimization of Chemical Processes, Badji Mokhtar University, Annaba, Algeria
| | - Nabila Khellaf
- Department of Process Engineering, Faculty of Engineering, Badji Mokhtar University, Annaba, Algeria
- Laboratory of Organic Synthesis-Modeling and Optimization of Chemical Processes, Badji Mokhtar University, Annaba, Algeria
| | - Hayet Djelal
- Ecole des Métiers de l'Environnement, Campus de Ker Lann, Bruz, France
- Université Européenne de Bretagne, 5 Boulevard Laennec, Rennes, France
| | - Abdeltif Amrane
- Université Européenne de Bretagne, 5 Boulevard Laennec, Rennes, France
- Université de Rennes 1, ENSCR, CNRS, UMR, Allée de Beaulieu, Rennes Cedex, France
| | - Mohammed Bouhelassa
- LIPE, Faculty of Pharmaceutical Process Engineering, Constantine 3 University, Algeria
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18
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Horovitz I, Avisar D, Baker MA, Grilli R, Lozzi L, Di Camillo D, Mamane H. Carbamazepine degradation using a N-doped TiO2 coated photocatalytic membrane reactor: Influence of physical parameters. JOURNAL OF HAZARDOUS MATERIALS 2016; 310:98-107. [PMID: 26900981 DOI: 10.1016/j.jhazmat.2016.02.008] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/17/2016] [Accepted: 02/02/2016] [Indexed: 05/11/2023]
Abstract
Commercial α-Al2O3 photocatalytic membranes with a pore size of 200 and 800-nm were coated with N-doped TiO2 photocatalytic film using a sol-gel technique for concurrent bottom-up filtration and photocatalytic oxidation. X-ray diffraction confirmed that the deposited N-doped TiO2 films are in the form of anatase with 78-84% coverage of the membrane surface. The concentration of N found by X-ray photoelectron spectroscopy was in the range of 0.3-0.9 atomic percentage. Membrane permeability after coating decreased by 50% and 12% for the 200- and 800-nm membrane substrates, respectively. The impact of operational parameters on the photocatalytic activity (PCA) of the N-doped TiO2-coated membranes was examined in a laboratory flow cell based on degradation of the model micropollutant carbamazepine, using a solar simulator as the light source. The significant gap in degradation rate between flow through the membrane and flow on the surface of the membrane was attributed both to the hydraulic effect and in-pore PCA. N-doped TiO2-coated membranes showed enhanced activity for UV wavelengths, in addition to activity under visible light. Experiments of PCA under varying flow rates concluded that the process is in the mass-transfer control regime. Carbamazepine removal rate increased with temperature, despite the decrease in dissolved oxygen concentration.
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Affiliation(s)
- Inna Horovitz
- School of Mechanical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel; The Hydro-Chemistry Laboratory, Faculty of Geography and the Environment, Tel Aviv University, Tel Aviv 69978, Israel
| | - Dror Avisar
- The Hydro-Chemistry Laboratory, Faculty of Geography and the Environment, Tel Aviv University, Tel Aviv 69978, Israel
| | - Mark A Baker
- The Surface Analysis Laboratory, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Rossana Grilli
- The Surface Analysis Laboratory, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Luca Lozzi
- Department of Physical and Chemical Sciences, University of L'Aquila, Via Vetoio, I-67100 L'Aquila, Italy
| | - Daniela Di Camillo
- Department of Physical and Chemical Sciences, University of L'Aquila, Via Vetoio, I-67100 L'Aquila, Italy
| | - Hadas Mamane
- School of Mechanical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel.
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19
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Kuppusamy S, Palanisami T, Megharaj M, Venkateswarlu K, Naidu R. Ex-Situ Remediation Technologies for Environmental Pollutants: A Critical Perspective. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2016; 236:117-192. [PMID: 26423074 DOI: 10.1007/978-3-319-20013-2_2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Pollution and the global health impacts from toxic environmental pollutants are presently of great concern. At present, more than 100 million people are at risk from exposure to a plethora of toxic organic and inorganic pollutants. This review is an exploration of the ex-situ technologies for cleaning-up the contaminated soil, groundwater and air emissions, highlighting their principles, advantages, deficiencies and the knowledge gaps. Challenges and strategies for removing different types of contaminants, mainly heavy metals and priority organic pollutants, are also described.
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Affiliation(s)
- Saranya Kuppusamy
- CERAR-Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA, 5095, Australia
- CRC CARE-Cooperative Research Centre for Contamination Assessment and Remediation of Environment, 486, Salisbury South, SA, 5106, Australia
| | - Thavamani Palanisami
- CRC CARE-Cooperative Research Centre for Contamination Assessment and Remediation of Environment, 486, Salisbury South, SA, 5106, Australia
- GIER- Global Institute for Environmental Research, Faculty of Science and Information Technology, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Mallavarapu Megharaj
- CRC CARE-Cooperative Research Centre for Contamination Assessment and Remediation of Environment, 486, Salisbury South, SA, 5106, Australia.
- GIER- Global Institute for Environmental Research, Faculty of Science and Information Technology, The University of Newcastle, Callaghan, NSW, 2308, Australia.
| | - Kadiyala Venkateswarlu
- Formerly Department of Microbiology, Sri Krishnadevaraya University, Anantapur, 515055, India
| | - Ravi Naidu
- CRC CARE-Cooperative Research Centre for Contamination Assessment and Remediation of Environment, 486, Salisbury South, SA, 5106, Australia
- GIER- Global Institute for Environmental Research, Faculty of Science and Information Technology, The University of Newcastle, Callaghan, NSW, 2308, Australia
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20
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Assadi AA, Bouzaza A, Wolbert D. Study of synergetic effect by surface discharge plasma/TiO2 combination for indoor air treatment: Sequential and continuous configurations at pilot scale. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2015.05.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Assadi AA, Abdelkrim B, Dominique W. Kinetic Modeling of VOC Photocatalytic Degradation Using a Process at Different Reactor Configurations and Scales. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2015. [DOI: 10.1515/ijcre-2015-0003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
This work investigated the performance of isovaleraldehyde (3-methylbutanal) removal from gas streams in photocatalytic reactors at room temperature. The feasibility of pollutant removal using the up-scaled reactor was systematically assessed by monitoring the removal efficiency at different operational parameters, such as geometries of reactor, air flow rate and inlet concentration. A proposal modeling for scaling up the photocatalytic reactors is described and detailed in this present study. In this context, the photocatalytic degradation of isovaleraldehyde (Isoval) in gas phase is studied. In fact, the removal rate has been compared at different continuous flow reactors: a photocatalytic tangential reactor (PTR), planar reactor and P5000 pilot. The effects of the inlet concentration, flow rate, geometries and size of reactors on the removal efficiency are also studied. A kinetic model taking into account the mass transfer step is developed. The modeling is done by introducing an equivalent intermediate (EI) formed by the photo-oxidation of Isoval. This new approach has substantially improved the agreement between modeling and experiments with a satisfactory overall description of the mineralization from lab to pilot scales.
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22
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Palau J, Assadi A, Penya-roja J, Bouzaza A, Wolbert D, Martínez-Soria V. Isovaleraldehyde degradation using UV photocatalytic and dielectric barrier discharge reactors, and their combinations. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2014.11.013] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Maxime G, Amine AA, Abdelkrim B, Dominique W. Removal of gas-phase ammonia and hydrogen sulfide using photocatalysis, nonthermal plasma, and combined plasma and photocatalysis at pilot scale. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:13127-13137. [PMID: 24996941 DOI: 10.1007/s11356-014-3244-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 06/20/2014] [Indexed: 06/03/2023]
Abstract
This study focuses on the removal of gas-phase ammonia (NH3) and hydrogen sulfide (H2S) in a continuous reactor. Photocatalysis and surface dielectric barrier discharge (SDBD) plasma are studied separately and combined. Though the removal of volatile organic compounds by coupling plasma and photocatalysis has been reported on a number of studies in laboratory scale, this is as far as we know the first time that it is used to remove inorganic malodorous pollutants. While each separate process is able to degrade ammonia and hydrogen sulfide, a synergetic effect appears when they are combined at a pilot scale, leading to removal capacity higher than the sum of each separate process. The removal capacity is higher when the gas circulates at a higher flow rate and when pollutant concentration is higher. The presence of water vapor in the gas is detrimental to the efficiency of the process. Operating conditions also influence the production of nitrogen oxides and ozone.
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Affiliation(s)
- Guillerm Maxime
- Laboratoire Sciences Chimiques de Rennes - équipe Chimie et Ingénierie des Procédés, UMR 6226 CNRS, ENSCR, 11 allée de Beaulieu, CS 50837, 35700, Rennes, France
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24
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Assadi AA, Bouzaza A, Wolbert D, Petit P. Isovaleraldehyde elimination by UV/TiO2 photocatalysis: comparative study of the process at different reactors configurations and scales. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:11178-11188. [PMID: 24573462 DOI: 10.1007/s11356-014-2603-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 01/26/2014] [Indexed: 06/03/2023]
Abstract
A proposal for scaling-up the photocatalytic reactors is described and applied to the coated catalytic walls with a thin layer of titanium dioxide under the near ultraviolet (UV) irradiation. In this context, the photocatalytic degradation of isovaleraldehyde in gas phase is studied. In fact, the removal capacity is compared at different continuous reactors: a photocatalytic cylindrical reactor, planar reactor, and pilot unit. Results show that laboratory results can be useful for reactor design and scale-up. The flowrate increases lead to the removal capacity increases also. For example, with pilot unit, when flowrate extends four times, the degradation rate varies from 0.14 to 0.38 g h(-1) mcat (-2). The influence of UV intensity is also studied. When this parameter increases, both degradation rate and overall mineralization are enhanced. Moreover, the effects of inlet concentration, flowrate, geometries, and size of reactors on the removal capacity are also studied.
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Affiliation(s)
- Aymen Amine Assadi
- Laboratoire Sciences Chimiques de Rennes-équipe Chimie et Ingénierie des Procédés, UMR 6226 CNRS, ENSCR-11, allée de Beaulieu, 508307-35708, Rennes, France
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25
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Abatement of 3-methylbutanal and trimethylamine with combined plasma and photocatalysis in a continuous planar reactor. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2014.03.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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26
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Assadi AA, Palau J, Bouzaza A, Wolbert D. Modeling of a continuous photocatalytic reactor for isovaleraldehyde oxidation: Effect of different operating parameters and chemical degradation pathway. Chem Eng Res Des 2013. [DOI: 10.1016/j.cherd.2013.02.020] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Gérardin F, Cloteaux A, Guillemot M, Faure M, André JC. Photocatalytic conversion of gaseous nitrogen trichloride into available chlorine--experimental and modeling study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:4628-4635. [PMID: 23566077 DOI: 10.1021/es400588m] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In water, chlorine reacts with nitrogen-containing compounds to produce disinfection byproducts such as nitrogen trichloride which induces ocular and respiratory irritations in swimming pool workers. A technical solution has been used to reduce NCl3 exposure to acceptable levels, by adding a stripping step to the water recycling loop. The pollutants extracted are currently rejected into the atmosphere without treatment. However, the physical properties of NCl3 could be harnessed to induce its controlled degradation by direct or indirect light. This paper describes the way to transform NCl3 into oxidizing chlorine by photocatalysis under laboratory conditions. Photocatalytic oxidation efficiently degrades gaseous nitrogen trichloride, producing compounds such as HClO. About 60% of NCl3 decomposed was converted into HClO which could be used as a disinfection compound. A kinetic model is proposed for the photocatalytic process based on a convection/diffusion model. The Langmuir-Hinshelwood model was applied to the chemical part of the mechanism. The apparent quantum yield was also estimated to assess the optimal irradiance for NCl3 transformation. The results show that photocatalysis performs much better than photolysis alone for NCl3 removal, i.e. at least 25 times more efficient.
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Affiliation(s)
- F Gérardin
- Institut National de Recherche et de Sécurité, Rue du Morvan, CS60027, 54519 Vandœuvre Cedex, France.
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