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Efficient post-plasma catalytic degradation of toluene via series of Co–Cu/TiO2 catalysts. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04805-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Saud S, Nguyen DB, Bhattarai RM, Matyakubov N, Nguyen VT, Ryu S, Jeon H, Kim SB, Mok YS. Plasma-catalytic ethylene removal by a ZSM-5 washcoat honeycomb monolith impregnated with palladium. JOURNAL OF HAZARDOUS MATERIALS 2022; 426:127843. [PMID: 34844801 DOI: 10.1016/j.jhazmat.2021.127843] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/29/2021] [Accepted: 11/16/2021] [Indexed: 06/13/2023]
Abstract
The effective removal of dilute ethylene in a novel honeycomb plasma reactor was investigated using a honeycomb catalyst (Pd/ZSM-5/monolith) sandwiched between two-perforated electrodes operating at ambient temperature. Herein, the dependence of catalyst performance on the binder fraction, catalyst preparation method, and catalyst loading was examined. Ethylene removal was carried out by a process comprising cycles of 30-min adsorption conjugated with 15-min plasma-catalytic oxidation. Interestingly, the performance of the cyclic process was superior to continuous plasma-catalytic oxidation and thermally activated catalyst in terms of energy conservation, i.e., ~36 compared to ~105 and ~300 J/L, respectively. Hence, the novel cyclic process can be considered advanced-oxidation technology that features room-temperature oxidation, offers low energy consumption, negligible hazardous by-products emissions such as NOx and O3. Moreover, the process operated under described conditions: low-pressure drop, ambient atmosphere, a mechanically stable system, and a simple reactor configuration, suggesting the practical applicability of this plasma process.
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Affiliation(s)
- Shirjana Saud
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea
| | - Duc Ba Nguyen
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea; Institute of Research and Development, Duy Tan University, Danang 550000, Vietnam
| | - Roshan Mangal Bhattarai
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea
| | - Nosir Matyakubov
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea
| | - Van Toan Nguyen
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea
| | - Seungmin Ryu
- Plasma Technology Research Center, Korea Institute of Fusion Energy, Jeollabuk-do 54004, Republic of Korea
| | - Hyungwon Jeon
- Plasma Technology Research Center, Korea Institute of Fusion Energy, Jeollabuk-do 54004, Republic of Korea
| | - Seong Bong Kim
- Plasma Technology Research Center, Korea Institute of Fusion Energy, Jeollabuk-do 54004, Republic of Korea
| | - Young Sun Mok
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea.
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Lyu C, Zhang L, He D, Su B, Lyu Y. Micrometer-sized NiOOH hierarchical spheres for enhanced degradation of sulfadiazine via synergistic adsorption and catalytic oxidation in peroxymonosulfate system. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.07.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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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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Matyakubov N, Nguyen DB, Saud S, Heo I, Kim SJ, Kim YJ, Lee JH, Mok YS. Effective practical removal of acetaldehyde by a sandwich-type plasma-in-honeycomb reactor under surrounding ambient conditions. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125608. [PMID: 33730645 DOI: 10.1016/j.jhazmat.2021.125608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/26/2021] [Accepted: 03/04/2021] [Indexed: 06/12/2023]
Abstract
The effective removal of acetaldehyde by humidified air plasma was investigated with a high throughput of contaminated gas in a sandwiched honeycomb catalyst reactor at surrounding ambient temperature. Here, acetaldehyde at the level of a few ppm was successfully oxidized by the honeycomb plasma discharge despite the harsh condition of large water content in the feed gas. The conversion rate of acetaldehyde increased significantly with the presence of catalysts coating on the surface channels. The increased conversion rate was also obtained with a high specific energy input (SEI) and total flow rate. Interestingly, the conversion changed negligibly under the acetaldehyde concentration range from 5 to 20 ppm. However, the conversion rate decreased toward increased water amount in the feed gas. Notably, about 60% of acetaldehyde in the feed was oxidized under SEI of 40 J/L at water amounts ≤ 2.5%, approximately 0.5 g/kWh for acetaldehyde removal. Also, the plasma-catalyst reaction was superior to the thermal reactive catalyst for acetaldehyde removal in airborne pollutants. In comparison with other plasma-catalyst sources for acetaldehyde removal, the energy efficiency under the condition is comparable. Moreover, the honeycomb plasma discharge features high throughput, avoiding pressure drop, and straightforward reactor configuration, suggesting potential practical applications.
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Affiliation(s)
- Nosir Matyakubov
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea
| | - Duc Ba Nguyen
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea; Institute of Research and Development, Duy Tan University, Danang 550000, Viet Nam.
| | - Shirjana Saud
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea
| | - Iljeong Heo
- Environment & Sustainable Resources Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Sang-Joon Kim
- Environment & Sustainable Resources Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Young Jin Kim
- Environment & Sustainable Resources Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Jin Hee Lee
- Environment & Sustainable Resources Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Young Sun Mok
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea.
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Li J, Wu L, Wang N, Li X, Cen C. Promotion of TiO 2 Nanotube-Confined Pt Nanoparticles via Surface Modification with Fe 2O 3 for Ethylene Oxidation at Low Temperature. ACS OMEGA 2021; 6:11529-11536. [PMID: 34056308 PMCID: PMC8153978 DOI: 10.1021/acsomega.1c00665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
A modified confined catalyst with Pt nanoparticles on the interior and Fe2O3 on the exterior surface of TiO2 nanotubes (Pt-in/Fe2O3-TNTs) was prepared and investigated for catalyzing the oxidation of ethylene. Compared with the Pt-in/TNTs without Fe2O3 modification, the Pt-in/Fe2O3-TNTs exhibited a significantly enhanced activity, and the complete conversion temperature of ethylene decreased from 170 to 95 °C. X-ray photoelectron spectroscopy analysis indicated that the Pt nanoparticles were stabilized at higher oxidation states in the Pt-in/Fe2O3-TNT catalyst. It was proposed that the modification of Fe2O3 on the outer surface can tune the electronic state of the encapsulated Pt particles and accelerate the electrons transferred from Pt to Fe species via TiO2 nanotubes, thus improving the catalytic oxidation performance of the confined catalyst.
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Affiliation(s)
- Juan Li
- Key
Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Liangpeng Wu
- Key
Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Nan Wang
- Key
Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Xinjun Li
- Key
Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Chaoping Cen
- South
China Institute of Environmental Science, Ministry of Environmental Protection, Guangzhou 510655, China
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Abstract
“Non-thermal plasma technology” (NTP) has notably increased [...]
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Saud S, Nguyen DB, Bhattarai RM, Matyakubov N, Heo I, Kim SJ, Kim YJ, Lee JH, Mok YS. Dependence of humidified air plasma discharge performance in commercial honeycomb monoliths on the configuration and key parameters of the reactor. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124024. [PMID: 33068988 DOI: 10.1016/j.jhazmat.2020.124024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 08/18/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
The effect of the reactor configuration and several key parameters such as the gas temperature, humidity, and flow rate on the corona discharge plasma in honeycomb monoliths was investigated. The AC corona discharge-based plasma reactor consisted of two parallel electrodes (perforated disk/wire-mesh) placed at both ends of the honeycomb monolith. Although the wire-mesh electrode offers increased sharpness, the perforated disk electrode, where the corona discharge started at the sharp edges of the holes, produced more discharge power because of the larger effective electrode area. Loading a small amount of metal onto the monolith was found to increase the discharge power significantly. Coating the monolith with a zeolite such as ZSM-5 (Si/Al: 23.9) led to a decrease in the discharge power because of its hydrophobic nature and large surface area. The result also revealed that the operating temperature, the humidity of the feed gas, and the gas velocity were key factors affecting the discharge performance. The discharge power was inversely proportional to the temperature. On the other hand, the use of a high-velocity feed gas with high water vapor content was found to be particularly advantageous for obtaining high discharge power.
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Affiliation(s)
- Shirjana Saud
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea
| | - Duc Ba Nguyen
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea; Institute of Research and Development, Duy Tan University, Danang 550000, Viet Nam.
| | - Roshan Mangal Bhattarai
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea
| | - Nosir Matyakubov
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea
| | - Iljeong Heo
- Environment & Sustainable Resources Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Sang-Joon Kim
- Environment & Sustainable Resources Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Young Jin Kim
- Environment & Sustainable Resources Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Jin Hee Lee
- Environment & Sustainable Resources Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Young Sun Mok
- Department of Chemical and Biological Engineering, Jeju National University, Jeju 63243, Republic of Korea.
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Abstract
The purification of diesel exhaust gas is of great importance to prevent the atmospheric emission of major pollutants such as diesel particulate matter and nitrogen oxides and meet the environmental regulations. The atmospheric-pressure plasma is attracting increasing interest and is a promising after-treatment technology for purifying diesel emission at low temperatures. However, when compared with the numerous publications on nitrogen oxides reduction by non-thermal plasma, using non-thermal plasma to particulate matter treatment have relatively limited. This work provides a comprehensive review of the plasma applications for diesel particulate matter treatment, including self-regenerating diesel particulate filter, diesel particulate matter removal, and simultaneous removal of diesel particulate matter and nitrogen oxides. The treatment of particulate matter from both simulated particulate matter sources and actual diesel engines also discussed in this comprehensive review. The challenge to this technology is limited energy consumption for plasma, which should be less than 5% (~30 J/L) of the overall fuel consumption. Until now, the atmospheric-pressure plasma has been no commercial implementation in diesel exhaust gas treatment, so more research is needed to be done in this field.
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Hossain MM, Mok YS, Nguyen DB, Ahmed R, Saud S, Heo I. Effective removal of toluene at near room temperature using cyclic adsorption-oxidation operation in alternative fixed-bed plasma-catalytic reactor. Chem Eng Res Des 2020. [DOI: 10.1016/j.cherd.2020.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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