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Yu B, Deng H, Lu Y, Pan T, Shan W, He H. Adsorptive interaction between typical VOCs and various topological zeolites: Mixture effect and mechanism. J Environ Sci (China) 2024; 136:626-636. [PMID: 37923471 DOI: 10.1016/j.jes.2023.02.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/09/2023] [Accepted: 02/09/2023] [Indexed: 11/07/2023]
Abstract
Adsorption is one of the most feasible and effective methods to alleviate the volatile organic compounds (VOCs) pollution. However, the mixture effect and mechanism for competitive adsorption of VOCs on zeolites are barely addressed. In this study, toluene, acetone, and ethyl acetate as prevalent VOCs species were removed by four potential zeolites (13X, USY, Beta, ZSM-5) in both single- and multi-component systems. The structure-property relationship between adsorbate-adsorbent pairs was revealed by X-ray diffraction, scanning electron microscopy, energy dispersive spectrometer, X-ray fluorescence, N2 adsorption and density function theory calculation. The molecular polarity and volatility of VOCs species played key roles in adsorption and the dynamic uptakes were generally listed as follows: ethyl acetate > toluene > acetone. As for the above VOCs mixtures, 13X zeolite selectively adsorbed oxygenated VOCs rather than toluene. In contrast, USY exhibited a preference to trap toluene. Ethyl acetate could be readily enriched by ZSM-5 and Beta selectively. The possible explanations and implications are discussed based on the subtle change in electron density. The results obtained are vital for understanding the mixture effect of VOCs adsorption and may guide the selection of proper adsorbent for real applications.
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Affiliation(s)
- Bo Yu
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hua Deng
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Yuqin Lu
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Tingting Pan
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Wenpo Shan
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong He
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China; State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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2
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El-Hashemy MAES, Alotaibi NF. Purification of benzene-laden air by static adsorption of benzene onto activated carbon prepared from Diplotaxis acris biomass. BIOMASS CONVERSION AND BIOREFINERY 2023; 13:1763-1777. [DOI: 10.1007/s13399-021-01462-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 02/19/2021] [Accepted: 03/23/2021] [Indexed: 09/02/2023]
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3
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Cano-Casanova L, Ansón-Casaos A, Hernández-Ferrer J, Benito AM, Maser WK, Garro N, Lillo-Ródenas MA, Román-Martínez MC. Surface-Enriched Boron-Doped TiO 2 Nanoparticles as Photocatalysts for Propene Oxidation. ACS APPLIED NANO MATERIALS 2022; 5:12527-12539. [PMID: 36185169 PMCID: PMC9513816 DOI: 10.1021/acsanm.2c02217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 07/18/2022] [Indexed: 06/16/2023]
Abstract
A series of nanostructured boron-TiO2 photocatalysts (B-X-TiO2-T) were prepared by sol-gel synthesis using titanium tetraisopropoxide and boric acid. The effects of the synthesis variables, boric acid amount (X) and crystallization temperature (T), on structural and electronic properties and on the photocatalytic performance for propene oxidation, are studied. This reaction accounts for the remediation of pollution caused by volatile organic compounds, and it is carried out at low concentrations, a case in which efficient removal techniques are difficult and costly to implement. The presence of boric acid during the TiO2 synthesis hinders the development of rutile without affecting the textural properties. X-ray photoelectron spectroscopy analysis reveals the interstitial incorporation of boron into the surface lattice of the TiO2 nanostructure, while segregation of B2O3 occurs in samples with high boron loading, also confirmed by X-ray diffraction. The best-performing photocatalysts are those with the lowest boron loading. Their high activity, outperforming the equivalent sample without boron, can be attributed to a high anatase and surface hydroxyl group content and efficient photo-charge separation (photoelectrochemical characterization, PEC), which can explain the suppression of visible photoluminescence (PL). Crystallization at 450 °C renders the most active sample, likely due to the development of a pure anatase structure with a large surface boron enrichment. A shift in the wavelength-dependent activity profile (PEC data) and the lowest electron-hole recombination rate (PL data) are also observed for this sample.
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Affiliation(s)
- L. Cano-Casanova
- Grupo
Materiales Carbonosos y Medio Ambiente, Departamento de Química
Inorgánica e Instituto Universitario de Materiales (IUMA),
Facultad de Ciencias, Universidad de Alicante, Ap.99, E-03080 Alicante, Spain
| | - A. Ansón-Casaos
- Instituto
de Carboquímica, ICB-CSIC, Miguel Luesma Castán 4, 50018 Zaragoza, Spain
| | - J. Hernández-Ferrer
- Instituto
de Carboquímica, ICB-CSIC, Miguel Luesma Castán 4, 50018 Zaragoza, Spain
| | - A. M. Benito
- Instituto
de Carboquímica, ICB-CSIC, Miguel Luesma Castán 4, 50018 Zaragoza, Spain
| | - W. K. Maser
- Instituto
de Carboquímica, ICB-CSIC, Miguel Luesma Castán 4, 50018 Zaragoza, Spain
| | - N. Garro
- Institut
de Ciència dels Materials (ICMUV), Universitat de València, 46980 Paterna, València, Spain
| | - M. A. Lillo-Ródenas
- Grupo
Materiales Carbonosos y Medio Ambiente, Departamento de Química
Inorgánica e Instituto Universitario de Materiales (IUMA),
Facultad de Ciencias, Universidad de Alicante, Ap.99, E-03080 Alicante, Spain
| | - M. C. Román-Martínez
- Grupo
Materiales Carbonosos y Medio Ambiente, Departamento de Química
Inorgánica e Instituto Universitario de Materiales (IUMA),
Facultad de Ciencias, Universidad de Alicante, Ap.99, E-03080 Alicante, Spain
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4
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Mohammed MM, Alalwan HA, Alminshid A, Hussein SAM, Mohammed MF. Desulfurization of heavy naphtha by oxidation-adsorption process using iron-promoted activated carbon and Cu+2-promoted zeolite 13X. CATAL COMMUN 2022. [DOI: 10.1016/j.catcom.2022.106473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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5
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Li Y, Shen Y, Niu Z, Tian J, Zhang D, Tang Z, Li W. Process analysis of temperature swing adsorption and temperature vacuum swing adsorption in VOCs recovery from activated carbon. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.01.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Enhancement effect on adsorbent utilization rate based on Twin–Bed tandem adsorption. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.119914] [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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7
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Ursueguía D, Díaz E, Ordóñez S. Metal-Organic Frameworks (MOFs) as methane adsorbents: From storage to diluted coal mining streams concentration. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 790:148211. [PMID: 34111784 DOI: 10.1016/j.scitotenv.2021.148211] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 05/29/2021] [Accepted: 05/29/2021] [Indexed: 05/25/2023]
Abstract
Ventilation Air Methane emissions (VAM) from coal mines lead to environmental concern because their high global warming potential and the loss of methane resources. VAM upgrading requires pre-concentration processes dealing with high flow rates of very diluted streams (<1% methane). Therefore, methane separation and concentration is technically challenging and has important environmental and safety concerns. Among the alternatives, adsorption on Metal-Organic Frameworks (MOFs) could be an interesting option to methane selective separation, due to its tuneable character and outstanding physical properties. Most of the works devoted to the methane adsorption on MOFs deal with methane storage. Therefore, these works were reviewed to determine the properties governing methane-MOF interactions. In addition, the metallic ions and organic linkers roles have been identified. With these premises, decisive effects in the methane adsorption selectivity in nitrogen/methane lean mixtures have been discussed, since nitrogen is the most concentrated gas in the VAM stream, and it is very similar to methane molecule. In order to fulfill this overview, the effect of other aspects, such as the presence of polar compounds (moisture and carbon dioxide), was also considered. In addition, engineering considerations in the operation of fixed bed adsorption units and the main challenges associated to MOFs as adsorbents were also discussed.
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Affiliation(s)
- David Ursueguía
- Catalysis, Reactors and Control Research Group (CRC), Department of Chemical and Environmental Engineering, University of Oviedo, Julián Clavería s/n, 33006 Oviedo, Spain
| | - Eva Díaz
- Catalysis, Reactors and Control Research Group (CRC), Department of Chemical and Environmental Engineering, University of Oviedo, Julián Clavería s/n, 33006 Oviedo, Spain
| | - Salvador Ordóñez
- Catalysis, Reactors and Control Research Group (CRC), Department of Chemical and Environmental Engineering, University of Oviedo, Julián Clavería s/n, 33006 Oviedo, Spain.
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8
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Removal of chlorinated volatile organic compounds onto natural and Cu-modified zeolite: The role of chemical surface characteristics in the adsorption mechanism. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118080] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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9
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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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10
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Nikam S, Mandal D. Experimental Study of the Effect of Different Parameters on the Adsorption and Desorption of Trichloroethylene Vapor on Activated Carbon Particles. ACS OMEGA 2020; 5:28080-28087. [PMID: 33163790 PMCID: PMC7643193 DOI: 10.1021/acsomega.0c03648] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/08/2020] [Indexed: 06/11/2023]
Abstract
Trichloroethylene (TCE) is used as a solvent in various industrial processes. During its use, TCE vaporizes and its vapor pollutes the working atmosphere. Its recovery is very important and activated carbon may be used for this purpose. In the present study, experiments were conducted with activated carbon particles for adsorption and desorption of TCE vapor. The adsorption isotherms were measured over a temperature range of 30-100 °C. Also, the effects of particle sizes (d p; 355, 500, and 710 μm), initial concentration of TCE vapor (100, 150, 200, and 250 ppm), and temperature (30, 50, and 100 °C) on the adsorption isotherms of TCE on activated carbon with air as the carrier stream were investigated, which were not reported earlier. From the experimental results, it was found that as the particle size decreases the adsorption capacity increases because of the increase in surface area with decrease in size of particles. The effect of the initial concentration of TCE vapor showed proportionality with adsorption capacity. The increase in temperature showed increase in the adsorption capacity. The adsorption isotherms obtained from the experimental results were compared with model isotherms viz. Langmuir and Freundlich. The Langmuir and Freundlich isotherm models showed accurate fits with R 2 values of 0.99067 and 0.99142, respectively, suggesting a hybrid adsorption mechanism involving monolayer and multilayer adsorption. From the desorption study, it was found that the recovery of TCE-vapor from activated carbon is possible, and hence its reuse. This study confirms the suitability of activated carbon as an adsorbent for the removal of TCE vapors emitted from industrial and domestic sources. The details of the experiments and results are discussed in this article.
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Affiliation(s)
- Shradha Nikam
- Homi
Bhabha National Institute, Mumbai 400094, India
| | - Debapriya Mandal
- Homi
Bhabha National Institute, Mumbai 400094, India
- Alkali
Material and Metal Division, Bhabha Atomic
Research Centre, Mumbai 400085, India
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11
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Chen YT, Huang YP, Wang C, Deng JG, Hsi HC. Comprehending adsorption of methylethylketone and toluene and microwave regeneration effectiveness for beaded activated carbon derived from recycled waste bamboo tar. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2020; 70:616-628. [PMID: 32182185 DOI: 10.1080/10962247.2020.1742247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/28/2020] [Accepted: 03/05/2020] [Indexed: 06/10/2023]
Abstract
UNLABELLED Beaded activated carbons (BACs) were derived from waste bamboo tar through carbonization (500°C for 2 hr) followed by physical activation using carbon dioxide (800-900°C for 2-4 hr). The adsorbent was examined for their physical and chemical properties, adsorption capacities toward methylethylketone (MEK) and toluene, and regenerabilities under microwave heating. It was found that the maximum total surface area reached for bamboo-tar-derived BAC after physical activation was 1364 m2 g-1, and more than 95% of the area was attributed to the microporous structures. Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) isotherm models were applied to the adsorption isotherm fitting, and the minimum R2 for each model was 0.986, 0.915, and 0.943, respectively. The isosteric heats of adsorption calculated based on D-R parameters for methylethylketone and toluene were 44.04 to 51.50 and 45.88 to 73.27 KJ mol-1, respectively. They were slightly over the range of physisorption and increased with adsorbate loading, which might be related to the micropore filling mechanism. Microwave regeneration under 600 W of power output removed most of the adsorbate (>93.03%) within 8 min. The results of this study are intended to benefit future study on waste-derived adsorbent in environmental applications. IMPLICATIONS Recycling waste bamboo tar for the novel adsorbent preparation is shown feasible in this study. Beaded activated carbon (BAC) synthesized from this waste bamboo tar possessed a high specific surface area, which aided in the capturing of volatile organic compounds (VOCs). Three adsorption isotherms, Langmuir, Freundlich, Dubinin-Radushkevich (D-R) models can be applied in interpreting the experimental adsorption data, providing information on adsorption heat and possible adsorption mechanism. A potential microwave regeneration method for BAC is tested, showing high desorption efficiencies with minimum heel formation. These findings can provide a new pathway for waste bamboo tar management and VOC abatement using adsorbents.
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Affiliation(s)
- Yu-Ting Chen
- Graduate Institute of Environmental Engineering, National Taiwan University , Taipei, Taiwan, Republic of China
| | - Ying-Pin Huang
- Central Region Campus, Industrial Technology Research Institute , Tainan, Taiwan, Republic of China
| | - Can Wang
- School of Environmental Science and Engineering, Tianjin University , Tianjin, People's Republic of China
- Tianjin Key Lab of Indoor Air Environmental Quality Control , Tianjin, People's Republic of China
| | - Ji-Guang Deng
- College of Environmental and Energy Engineering, Beijing University of Technology , Beijing, People's Republic of China
| | - Hsing-Cheng Hsi
- Graduate Institute of Environmental Engineering, National Taiwan University , Taipei, Taiwan, Republic of China
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12
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Ma L, He M, Fu P, Jiang X, Lv W, Huang Y, Liu Y, Wang H. Adsorption of volatile organic compounds on modified spherical activated carbon in a new cyclonic fluidized bed. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116146] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Li W, Ni J, Cai S, Liu Y, Shen C, Yang H, Chen Y, Tao J, Yu Y, Liu Q. Variations in microbial community structure and functional gene expression in bio-treatment processes with odorous pollutants. Sci Rep 2019; 9:17870. [PMID: 31780738 PMCID: PMC6883040 DOI: 10.1038/s41598-019-54281-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 11/07/2019] [Indexed: 11/09/2022] Open
Abstract
Engineered microbial ecosystems in biofilters have been widely applied to treat odorous gases from industrial emissions. Variations in microbial community structure and function associated with the removal of odorous gases by biofilters are largely unknown. This study performed a metagenomic analysis to discover shifts in microbial community structures in a commercial scale biofilter after treating odorous gas. Our study identified 175,675 functional genes assigned into 43 functional KEGG pathways. Based on the unigene sequences, there were significant changes in microbial community structures in the biofilter after treating odorous gas. The dominant genera were Thiobacillus and Oceanicaulis before the treatment, and were Acidithiobacillus and Ferroplasma after the treatment. A clustering analysis showed that the number of down-regulated microbes exceeded the number of up-regulated microbes, suggesting that odorous gas treatment reduced in microbial community structures. A differential expression analysis identified 29,975 up- and 452,599 down-regulated genes. An enrichment analysis showed 17 classic types of xenobiotic biodegradation pathways. The results identified 16 and 15 genes involved in ammonia and sulfite metabolism, respectively; an analysis of their relative abundance identified several up-regulated genes, which may be efficient genes involved in removing odorous gases. The data provided in this study demonstrate the changes in microbial communities and help identify the dominant microflora and genes that play key roles in treating odorous gases.
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Affiliation(s)
- Weidong Li
- College of Qianjiang, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China
| | - Jianguo Ni
- Hangzhou Ecological Environment Bureau of Xiaoshan Branch, Hangzhou, 311201, Zhejiang, People's Republic of China
| | - Shaoqin Cai
- College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China.,College of Environment, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, People's Republic of China
| | - Ying Liu
- College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China
| | - Chenjia Shen
- College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China
| | - Huayun Yang
- College of Qianjiang, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China
| | - Yuquan Chen
- College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China
| | - Jia Tao
- College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China
| | - Yunfeng Yu
- College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China
| | - Qi Liu
- College of Qianjiang, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China. .,College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China.
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14
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Yang P, Song M, Kim D, Jung SP, Hwang Y. Synthesis conditions of porous clay heterostructure (PCH) optimized for volatile organic compounds (VOC) adsorption. KOREAN J CHEM ENG 2019. [DOI: 10.1007/s11814-019-0369-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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A Binder Jet Printed, Stainless Steel Preconcentrator as an In-Line Injector of Volatile Organic Compounds. SENSORS 2019; 19:s19122748. [PMID: 31248098 PMCID: PMC6630219 DOI: 10.3390/s19122748] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 06/11/2019] [Accepted: 06/17/2019] [Indexed: 11/17/2022]
Abstract
A conventional approach to making miniature or microscale gas chromatography (GC) components relies on silicon as a base material and MEMS fabrication as manufacturing processes. However, these devices often fail in medium-to-high temperature applications due to a lack of robust fluidic interconnects and a high-yield bonding process. This paper explores the feasibility of using metal additive manufacturing (AM), which is also known as metal 3D printing, as an alternative platform to produce small-scale microfluidic devices that can operate at a temperature higher than that which polymers can withstand. Binder jet printing (BJP), one of the metal AM processes, was utilized to make stainless steel (SS) preconcentrators (PCs) with submillimeter internal features. PCs can increase the concentration of gaseous analytes or serve as an inline injector for GC or gas sensor applications. Normally, parts printed by BJP are highly porous and thus often infiltrated with low melting point metal. By adding to SS316 powder sintering additives such as boron nitride (BN), which reduces the liquidus line temperature, we produce near full-density SS PCs at sintering temperatures much lower than the SS melting temperature, and importantly without any measurable shape distortion. Conversely, the SS PC without BN remains porous after the sintering process and unsuitable for fluidic applications. Since the SS parts, unlike Si, are compatible with machining, they can be modified to work with commercial compression fitting. The PC structures as well as the connection with the fitting are leak-free with relatively high operating pressures. A flexible membrane heater along with a resistance-temperature detector is integrated with the SS PCs for thermal desorption. The proof-of-concept experiment demonstrates that the SS PC can preconcentrate and inject 0.6% headspace toluene to enhance the detector's response.
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16
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Diao R, Zhang H, Zhao D, Li S. Adsorption and structure of benzene, toluene, and p-xylene in carbon slit pores: A Monte Carlo simulation study. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2018.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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17
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Liu A, Peng X, Jin Q, Jain SK, Vicent-Luna JM, Calero S, Zhao D. Adsorption and Diffusion of Benzene in Mg-MOF-74 with Open Metal Sites. ACS APPLIED MATERIALS & INTERFACES 2019; 11:4686-4700. [PMID: 30618234 DOI: 10.1021/acsami.8b20447] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We performed molecular simulations to investigate the adsorption and diffusion of benzene in metal-organic framework Mg-MOF-74. At 300 K and 20 Pa, the saturated loading of benzene reaches 8.2 mmol/g, almost twice of (12,12) single-walled carbon nanotube with a similar pore size, and 93% of the benzene molecules in Mg-MOF-74 can desorb at 390 K. The energy analysis indicates that the van der Waals contribution still dominates 70-80% of the total fluid-wall interaction energy compared with the Coulombic contribution. We further analyzed the structure of benzene confined in Mg-MOF-74 by the molecular snapshots, pair correlation functions, orientational order parameters, and local density profiles. It is found that low temperature and high pressure make the structure of adsorbed benzene more similar to that of the liquid benzene. Moreover, the benzene molecules in the contact adsorption layer lie flat on the surface of adsorbent, whereas those molecules near the pore center have no particular orientations. Due to the existence of open metal sites, the structures of adsorbed benzene are more compact and ordered than those of bulk liquid benzene. Consequently, the self-diffusion coefficient of saturated benzene in Mg-MOF-74 at 300 K is significantly lower than that of bulk liquid benzene and confined liquid benzene in slit pores and disordered carbons by 4-5 orders of magnitude. We investigated the separation and diffusion of benzene/cyclohexane in the mixture in Mg-MOF-74 and found that the pores almost completely adsorbed benzene, although its self-diffusion coefficient was slightly lower than that of cyclohexane.
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Affiliation(s)
- Anqi Liu
- College of Chemical Engineering , University of Petroleum (East China) , Qingdao 266580 , China
- CNPC Research Institute of Safety and Environment Technology , Beijing 102206 , P. R. China
| | - Xuan Peng
- College of Information Science and Technology , Beijing University of Chemical Technology , Beijing 100029 , P. R. China
| | - Qibing Jin
- College of Information Science and Technology , Beijing University of Chemical Technology , Beijing 100029 , P. R. China
| | - Surendra Kumar Jain
- Department of Chemical Engineering , Indian Institute of Technology Kanpur , Kanpur 208016 , India
| | - Jose Manuel Vicent-Luna
- Department of Physical, Chemical and Natural Systems , Universidad Pablo de Olavide , Ctra. Utrera Km 1 , Seville ES-41013 , Spain
| | - Sofía Calero
- Department of Physical, Chemical and Natural Systems , Universidad Pablo de Olavide , Ctra. Utrera Km 1 , Seville ES-41013 , Spain
| | - Dongfeng Zhao
- College of Chemical Engineering , University of Petroleum (East China) , Qingdao 266580 , China
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18
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The Use of Zeolites for VOCs Abatement by Combining Non-Thermal Plasma, Adsorption, and/or Catalysis: A Review. Catalysts 2019. [DOI: 10.3390/catal9010098] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Non-thermal plasma technique can be easily integrated with catalysis and adsorption for environmental applications such as volatile organic compound (VOC) abatement to overcome the shortcomings of individual techniques. This review attempts to give an overview of the literature about the application of zeolite as adsorbent and catalyst in combination with non-thermal plasma for VOC abatement in flue gas. The superior surface properties of zeolites in combination with its excellent catalytic properties obtained by metal loading make it an ideal packing material for adsorption plasma catalytic removal of VOCs. This work highlights the use of zeolites for cyclic adsorption plasma catalysis in order to reduce the energy cost to decompose per VOC molecule and to regenerate zeolites via plasma.
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19
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Cano-Casanova L, Amorós-Pérez A, Lillo-Ródenas MÁ, Román-Martínez MDC. Effect of the Preparation Method (Sol-Gel or Hydrothermal) and Conditions on the TiO₂ Properties and Activity for Propene Oxidation. MATERIALS 2018; 11:ma11112227. [PMID: 30423926 PMCID: PMC6266794 DOI: 10.3390/ma11112227] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 11/05/2018] [Accepted: 11/06/2018] [Indexed: 11/16/2022]
Abstract
Since the two most commonly used methods for TiO₂ preparation are sol-gel (SG) and hydrothermal (HT) synthesis, this study attempts to compare both methods in order to determine which one is the most suitable to prepare photocatalysts for propene oxidation. In addition, this work studies how the concentration of the HCl used for hydrolysis of the TiO₂ precursor affects the properties of the obtained materials. Also, the effect of avoiding the post-synthesis heat-treatment in a selection of samples is investigated. The photocatalysts are characterized by XRD, N₂ adsorption-desorption isotherms and UV-vis spectroscopy, and the study tries to correlate the properties with the photocatalytic performance of the prepared TiO₂ samples in propene oxidation. TiO₂ materials with high crystallinity, between 67% and 81%, and surface area (up to 134 m²/g) have been obtained both by SG and HT methods. In general, the surface area and pore volume of the TiO₂-HT samples are larger than those of TiO₂-SG ones. The TiO₂-HT catalysts are, in general, more active than TiO₂-SG materials or P25 in the photo-oxidation of propene. The effect of HCl presence during the TiO₂ synthesis and of the post synthesis heat treatment are much more marked in the case of the SG materials.
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Affiliation(s)
- Laura Cano-Casanova
- MCMA Group, Department of Inorganic Chemistry and Materials Institute, University of Alicante, E-03080 Alicante, Spain.
| | - Ana Amorós-Pérez
- MCMA Group, Department of Inorganic Chemistry and Materials Institute, University of Alicante, E-03080 Alicante, Spain.
| | - María Ángeles Lillo-Ródenas
- MCMA Group, Department of Inorganic Chemistry and Materials Institute, University of Alicante, E-03080 Alicante, Spain.
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20
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Liu A, Jain SK, Jin Q, Peng X. Adsorption and structure of benzene confined in disordered porous carbons: effect of pore heterogeneity and surface chemistry. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1496249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Anqi Liu
- Center for Safety, Environmental & Energy Conservation Technology, China University of Petroleum, Beijing, People’s Republic of China
- CNPC Research Institute of Safety and Environment Technology, Beijing, People’s Republic of China
| | - Surendra Kumar Jain
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur, India
| | - Qibing Jin
- College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, People’s Republic of China
| | - Xuan Peng
- College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, People’s Republic of China
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21
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Lukin I, Merz J, Schembecker G. Techniques for the recovery of volatile aroma compounds from biochemical broth: A review. FLAVOUR FRAG J 2018. [DOI: 10.1002/ffj.3447] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ilya Lukin
- Laboratory of Plant and Process Design; Department of Biochemical and Chemical Engineering; TU Dortmund University; Dortmund Germany
| | - Juliane Merz
- Laboratory of Plant and Process Design; Department of Biochemical and Chemical Engineering; TU Dortmund University; Dortmund Germany
| | - Gerhard Schembecker
- Laboratory of Plant and Process Design; Department of Biochemical and Chemical Engineering; TU Dortmund University; Dortmund Germany
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22
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Bhunia P, Chatterjee S, Rudra P, De S. Chelating polyacrylonitrile beads for removal of lead and cadmium from wastewater. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.11.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Huang W, Xu J, Tang B, Wang H, Tan X, Lv A. Adsorption performance of hydrophobically modified silica gel for the vapors of n-hexane and water. ADSORPT SCI TECHNOL 2017. [DOI: 10.1177/0263617417728835] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
An ordinary silica gel (SG-1) was chosen as the raw material and hydrophobically modified with trimethylchlorosilane under different microwave exposure. The orthogonal experiment was designed to screen the optimized modification method. The hydrophobic properties modified silica gel (SG-2) was analyzed by comparing the difference changes of surface chemistries. Then, the adsorption capacities of SG-1 and SG-2 to the n-hexane vapor and water vapor, respectively, were investigated and compared with the capacities of activated carbon and SG-3 (hydrophobically modified using the same composite modifier without microwave exposure). Meanwhile, there cyclable adsorptions of SG-2 to the two vapors were conducted while the desorptions of vacuum and heat was observed. The results showed that the effect of hydrophobic modification to SG-1 under microwave exposure was obvious and SG-2 also had a very good effect of adsorption for the n-hexane vapor. The modified silica gel shows great potential and effect for the recovery of volatile organic compounds with high content of water.
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24
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Hu MM, Emamipour H, Johnsen DL, Rood MJ, Song L, Zhang Z. Monitoring and Control of an Adsorption System Using Electrical Properties of the Adsorbent for Organic Compound Abatement. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:7581-7589. [PMID: 28562025 DOI: 10.1021/acs.est.7b00216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Adsorption systems typically need gas and temperature sensors to monitor their adsorption/regeneration cycles to separate gases from gas streams. Activated carbon fiber cloth (ACFC)-electrothermal swing adsorption (ESA) is an adsorption system that has the potential to be controlled with the electrical properties of the adsorbent and is studied here to monitor and control the adsorption/regeneration cycles without the use of gas and temperature sensors and to predict breakthrough before it occurs. The ACFC's electrical resistance was characterized on the basis of the amount of adsorbed organic gas/vapor and the adsorbent temperature. These relationships were then used to develop control logic to monitor and control ESA cycles on the basis of measured resistance and applied power values. Continuous sets of adsorption and regeneration cycles were performed sequentially entirely on the basis of remote electrical measurements and achieved ≥95% capture efficiency at inlet concentrations of 2000 and 4000 ppmv for isobutane, acetone, and toluene in dry and elevated relative humidity gas streams, demonstrating a novel cyclic ESA system that does not require gas or temperature sensors. This contribution is important because it reduces the cost and simplifies the system, predicts breakthrough before its occurrence, and reduces emissions to the atmosphere.
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Affiliation(s)
- Ming-Ming Hu
- College of Chemical Engineering, China University of Petroleum (East China) , Qingdao 266580, China
- Department of Civil and Environmental Engineering, University of Illinois , Urbana, Illinois 61801, United States
| | - Hamidreza Emamipour
- Department of Civil and Environmental Engineering, University of Illinois , Urbana, Illinois 61801, United States
| | - David L Johnsen
- Department of Civil and Environmental Engineering, University of Illinois , Urbana, Illinois 61801, United States
| | - Mark J Rood
- Department of Civil and Environmental Engineering, University of Illinois , Urbana, Illinois 61801, United States
| | - Linhua Song
- College of Science, China University of Petroleum (East China) , Qingdao 266580, China
| | - Zailong Zhang
- College of Science, China University of Petroleum (East China) , Qingdao 266580, China
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25
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Alemdar S, König JC, Hartwig S, Frister T, Scheper T, Beutel S. Bioproduction of α-humulene in metabolically engineered Escherichia coli and application in zerumbone synthesis. Eng Life Sci 2017; 17:900-907. [PMID: 32624838 DOI: 10.1002/elsc.201700043] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 06/02/2017] [Accepted: 06/06/2017] [Indexed: 01/09/2023] Open
Abstract
Zerumbone is a sesquiterpene ketone with potent anti-cancerogenic activities, produced in several ginger species of the Zingiberaceae familiy. We have investigated the biotechnological production of α-humulene, a precursor of zerumbone. By implementing a heterologous mevalonate pathway in combination with the α-humulene synthase expression, we effectively synthesized α-humulene from glucose in Escherichia coli. In this study, we developed a practical and efficient in situ separation method for α-humulene by comparison of extractive and adsorptive strategies. By the in situ adsorption of the product to the hydrophobic resin Amberlite® XAD4 we were able to increase α-humulene yield by 2310% to 60.2 mg/L. Furthermore we present an easy applicable, short subsequent chemical process for the conversion of α-humulene to zerumbone by using transition metal catalysis. To reduce process steps, the chemical reaction was carried out in the same solvent as the eluting solvent that was used to elute α-humulene from the adsorbent resin. By allylic oxidation of α-humulene with manganeseII chloride as a catalyst and tert.-butylhydroperoxide as an oxidizing agent we were able to synthetize zerumbone with a selectivity of 51.6%. Product and byproducts of the oxidation reaction were identified by GC-MS.
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Affiliation(s)
- Semra Alemdar
- Leibniz University Hannover Institute of Technical Chemistry Hannover Germany
| | - Jan C König
- Leibniz University Hannover Institute of Technical Chemistry Hannover Germany
| | - Steffen Hartwig
- Leibniz University Hannover Institute of Technical Chemistry Hannover Germany
| | - Thore Frister
- Leibniz University Hannover Institute of Technical Chemistry Hannover Germany
| | - Thomas Scheper
- Leibniz University Hannover Institute of Technical Chemistry Hannover Germany
| | - Sascha Beutel
- Leibniz University Hannover Institute of Technical Chemistry Hannover Germany
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26
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Saini VK, Pires J. Development of metal organic fromwork-199 immobilized zeolite foam for adsorption of common indoor VOCs. J Environ Sci (China) 2017; 55:321-330. [PMID: 28477827 DOI: 10.1016/j.jes.2016.09.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 07/09/2016] [Accepted: 09/07/2016] [Indexed: 06/07/2023]
Abstract
Reticulated foam shaped adsorbents are more efficient for the removal of volatile organic compounds (VOCs), particularly from low VOC-concentration indoor air streams. In this study composite structure of zeolite and metal organic frameworks (MOFs), referred as ZMF, has been fabricated by immobilization of fine MOF-199 powder on foam shaped Zeolite Socony Mobil-5 (ZSM-5) Zeolitic structure, referred as ZF. The ZMF possess a uniform and well-dispersed coating of MOF-199 on the porous framework of ZF. It shows higher surface area, pore volume, and VOCs adsorption capacity, as compared to ZF-structure. Post-fabrication changes in selective adsorption properties of ZMF were studied with three common indoor VOCs (benzene, n-hexane, and cyclohexane), using gravimetric adsorption technique. The adsorption capacity of ZMF with different VOCs follow the order of benzene>n-hexane>cyclohexane. In comparison with MOF-199 and ZF, the composite structure ZMF shows improvement in selectivity for benzene from other two VOCs. Further, improvement in efficiency and stability of prepared ZMF was found to be associated with its high MOF loading capacity and unique morphological and structural properties. The developed composite structure with improved VOCs removal and recyclability could be a promising material for small to limited scale air pollution treatment units.
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Affiliation(s)
- Vipin K Saini
- School of Environment and Natural Resources, Doon University, Dehradun 248001, India; Department of Chemistry and Biochemistry, Faculty of Sciences, University of Lisbon, Lisbon 1749-016, Portugal.
| | - João Pires
- Department of Chemistry and Biochemistry, Faculty of Sciences, University of Lisbon, Lisbon 1749-016, Portugal
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27
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López ME, Rene ER, Boger Z, Veiga MC, Kennes C. Modelling the removal of volatile pollutants under transient conditions in a two-stage bioreactor using artificial neural networks. JOURNAL OF HAZARDOUS MATERIALS 2017; 324:100-109. [PMID: 27021263 DOI: 10.1016/j.jhazmat.2016.03.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 02/25/2016] [Accepted: 03/05/2016] [Indexed: 05/20/2023]
Abstract
A two-stage biological waste gas treatment system consisting of a first stage biotrickling filter (BTF) and second stage biofilter (BF) was tested for the removal of a gas-phase methanol (M), hydrogen sulphide (HS) and α-pinene (P) mixture. The bioreactors were tested with two types of shock loads, i.e., long-term (66h) low to medium concentration loads, and short-term (12h) low to high concentration loads. M and HS were removed in the BTF, reaching maximum elimination capacities (ECmax) of 684 and 33 gm-3h-1, respectively. P was removed better in the second stage BF with an ECmax of 130 gm-3h-1. The performance was modelled using two multi-layer perceptrons (MLPs) that employed the error backpropagation with momentum algorithm, in order to predict the removal efficiencies (RE, %) of methanol (REM), hydrogen sulphide (REHS) and α-pinene (REP), respectively. It was observed that, a MLP with the topology 3-4-2 was able to predict REM and REHS in the BTF, while a topology of 3-3-1 was able to approximate REP in the BF. The results show that artificial neural network (ANN) based models can effectively be used to model the transient-state performance of bioprocesses treating gas-phase pollutants.
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Affiliation(s)
- M Estefanía López
- Chemical Engineering Laboratory, Faculty of Sciences, University of La Coruña, Rúa da Fraga, 10, E-15008 La Coruña, Spain
| | - Eldon R Rene
- Chemical Engineering Laboratory, Faculty of Sciences, University of La Coruña, Rúa da Fraga, 10, E-15008 La Coruña, Spain; Department of Environmental Engineering and Water Technology, UNESCO-IHE, P.O. Box 3015, 2601 DA Delft, The Netherlands
| | - Zvi Boger
- OPTIMAL-Industrial Neural Systems, 54 Rambal St., Be'er Sheva, 84243 Israel
| | - María C Veiga
- Chemical Engineering Laboratory, Faculty of Sciences, University of La Coruña, Rúa da Fraga, 10, E-15008 La Coruña, Spain
| | - Christian Kennes
- Chemical Engineering Laboratory, Faculty of Sciences, University of La Coruña, Rúa da Fraga, 10, E-15008 La Coruña, Spain.
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28
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Jia L, Ma J, Shi Q, Long C. Prediction of Adsorption Equilibrium of VOCs onto Hyper-Cross-Linked Polymeric Resin at Environmentally Relevant Temperatures and Concentrations Using Inverse Gas Chromatography. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:522-530. [PMID: 27936649 DOI: 10.1021/acs.est.6b05039] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Hyper-cross-linked polymeric resin (HPR) represents a class of predominantly microporous adsorbents and has good adsorption performance toward VOCs. However, adsorption equilibrium of VOCs onto HPR are limited. In this research, a novel method for predicting adsorption capacities of VOCs on HPR at environmentally relevant temperatures and concentrations using inverse gas chromatography data was proposed. Adsorption equilibrium of six VOCs (n-pentane, n-hexane, dichloromethane, acetone, benzene, 1, 2-dichloroethane) onto HPR in the temperature range of 403-443 K were measured by inverse gas chromatography (IGC). Adsorption capacities at environmentally relevant temperatures (293-328 K) and concentrations (P/Ps = 0.1-0.7) were predicted using Dubinin-Radushkevich (DR) equation based on Polany's theory. Taking consideration of the swelling properties of HPR, the volume swelling ratio (r) was introduced and r·Vmicro was used instead of Vmicro determined by N2 adsorption data at 77 K as the parameter q0 (limiting micropore volume) of the DR equation. The results showed that the adsorption capacities of VOCs at environmentally relevant temperatures and concentrations can be predicted effectively using IGC data, the root-mean-square errors between the predicted and experimental data was below 9.63%. The results are meaningful because they allow accurate prediction of adsorption capacities of adsorbents more quickly and conveniently using IGC data.
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Affiliation(s)
- Lijuan Jia
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , 163 Xianlin Avenue, Nanjing 210023, China
| | - Jiakai Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , 163 Xianlin Avenue, Nanjing 210023, China
| | - Qiuyi Shi
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , 163 Xianlin Avenue, Nanjing 210023, China
| | - Chao Long
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , 163 Xianlin Avenue, Nanjing 210023, China
- Nanjing University Yancheng Environmental Protection Technology and Engineering Research Institute , 888 Yingbin Road, Yancheng 22400, China
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29
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Zaitan H, Manero MH, Valdés H. Application of high silica zeolite ZSM-5 in a hybrid treatment process based on sequential adsorption and ozonation for VOCs elimination. J Environ Sci (China) 2016; 41:59-68. [PMID: 26969051 DOI: 10.1016/j.jes.2015.05.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 04/14/2015] [Accepted: 05/05/2015] [Indexed: 06/05/2023]
Abstract
In this study, a hydrophobic synthetic zeolite, namely ZSM-5 is chosen as an adsorbent/catalyst for toluene removal. Experimental results showed that toluene adsorption onto ZSM-5 was favourable, following a Langmuir adsorption isotherm model. ZSM-5 zeolite was regenerated using gaseous ozone at low temperature. Adsorbed toluene was oxidised, releasing mainly CO2 and H2O. Traces of oxidation by-products such as acetic acid and acetaldehyde were formed and remained adsorbed after the oxidativate regeneration with ozone. After four successive cycles of adsorption/ozonation, the adsorption efficiency was not affected (92%-99%). These results showed that volatile organic compound (VOC) removal by adsorption onto ZSM-5 zeolite followed by ozone regeneration could be used as a promising hybrid process for the control of VOC emissions in terms of efficiency.
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Affiliation(s)
- Hicham Zaitan
- Laboratoire de Chimie de la Matière Condensée (LCMC), Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdellah, B.P. 2202, Fès , Maroc.
| | - Marie Hélène Manero
- Université de Toulouse, INPT, UPS, Laboratoire de Génie Chimique, 4, Allée Emile Monso, F-31030 Toulouse, France; CNRS, Laboratoire de Génie Chimique, F-31030 Toulouse, France
| | - Héctor Valdés
- Laboratorio de Tecnologías Limpias (F. Ingeniería), Universidad Católica de la Santísima Concepción, Alonso de Ribera 2850, Concepción, Chile
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30
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Baur GB, Yuranov I, Kiwi-Minsker L. Activated carbon fibers modified by metal oxide as effective structured adsorbents for acetaldehyde. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.11.021] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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31
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Campesi MA, Luzi CD, Barreto GF, Martínez OM. Evaluation of an adsorption system to concentrate VOC in air streams prior to catalytic incineration. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 154:216-24. [PMID: 25734958 DOI: 10.1016/j.jenvman.2015.02.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 02/13/2015] [Accepted: 02/14/2015] [Indexed: 05/27/2023]
Abstract
Catalytic combustion is a well-developed process for the removal of volatile organic compounds (VOCs). In order to reduce both the amount of catalyst needed for incineration and the surface area of recuperative heat exchangers, an evaluation of the use of thermal swing adsorption as a previous step for VOC concentration is made. An air stream containing ethyl acetate and ethanol (employed as solvents in printing processes) has been taken as a case study. Based on the characteristics of the adsorption/desorption system and the properties of the stream to be treated, a monolithic rotor concentrator with activated carbon as adsorbent material is adopted. Once the temperature of the inlet desorption stream TD is chosen, the minimum possible desorption flow rate, WD,min, and the amount of adsorbent material can be properly defined according to the extent of the Mass Transfer Zone (MTZ) at the end of the adsorption stage. An approximate procedure to speed up the calculations needed for sizing the bed and predicting the operating variables is also presented. In the case studied here, the concentration of the VOC stream can reach 6 times that of the primary effluent when TD = 200 °C is chosen.
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Affiliation(s)
- María A Campesi
- Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP) 1 y 47, CP 1900 La Plata, Argentina; CINDECA, CCT La Plata (CONICET-UNLP), Calle 47 Nº 257, CP B1900AJK La Plata, Argentina
| | - Carlos D Luzi
- Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP) 1 y 47, CP 1900 La Plata, Argentina; CINDECA, CCT La Plata (CONICET-UNLP), Calle 47 Nº 257, CP B1900AJK La Plata, Argentina
| | - Guillermo F Barreto
- Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP) 1 y 47, CP 1900 La Plata, Argentina; CINDECA, CCT La Plata (CONICET-UNLP), Calle 47 Nº 257, CP B1900AJK La Plata, Argentina
| | - Osvaldo M Martínez
- Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP) 1 y 47, CP 1900 La Plata, Argentina; CINDECA, CCT La Plata (CONICET-UNLP), Calle 47 Nº 257, CP B1900AJK La Plata, Argentina.
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32
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Wang G, Dou B, Zhang Z, Wang J, Liu H, Hao Z. Adsorption of benzene, cyclohexane and hexane on ordered mesoporous carbon. J Environ Sci (China) 2015; 30:65-73. [PMID: 25872710 DOI: 10.1016/j.jes.2014.10.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 10/06/2014] [Accepted: 10/10/2014] [Indexed: 05/05/2023]
Abstract
Ordered mesoporous carbon (OMC) with high specific surface area and large pore volume was synthesized and tested for use as an adsorbent for volatile organic compound (VOC) disposal. Benzene, cyclohexane and hexane were selected as typical adsorbates due to their different molecular sizes and extensive utilization in industrial processes. In spite of their structural differences, high adsorption amounts were achieved for all three adsorbates, as the pore size of OMC is large enough for the access of these VOCs. In addition, the unusual bimodal-like pore size distribution gives the adsorbates a higher diffusion rate compared with conventional adsorbents such as activated carbon and carbon molecular sieve. Kinetic analysis suggests that the adsorption barriers mainly originated from the difficulty of VOC vapor molecules entering the pore channels of adsorbents. Therefore, its superior adsorption ability toward VOCs, together with a high diffusion rate, makes the ordered mesoporous carbon a promising potential adsorbent for VOC disposal.
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Affiliation(s)
- Gang Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. E-mail: .
| | - Baojuan Dou
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. E-mail:
| | - Zhongshen Zhang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. E-mail:
| | - Junhui Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. E-mail:
| | - Haier Liu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Zhengping Hao
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. E-mail: .
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Yuan G, Zhang J, Zhang Y, Yan Y, Ju X, Sun J. Characterization of high-alumina coal fly ash based silicate material and its adsorption performance on volatile organic compound elimination. KOREAN J CHEM ENG 2015. [DOI: 10.1007/s11814-014-0264-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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34
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Hsu SH, Huang CS, Chung TW, Gao S. Adsorption of chlorinated volatile organic compounds using activated carbon made from Jatropha curcas seeds. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.05.028] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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35
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Wang S, Zhang L, Long C, Li A. Enhanced adsorption and desorption of VOCs vapor on novel micro-mesoporous polymeric adsorbents. J Colloid Interface Sci 2014; 428:185-90. [DOI: 10.1016/j.jcis.2014.04.055] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 04/18/2014] [Accepted: 04/25/2014] [Indexed: 11/26/2022]
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36
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Jiang S, Zhang L, Chen T, Wang G. Adsorption separation of vinyl chloride and acetylene on activated carbon modified by metal ions. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.08.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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37
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Alejandro S, Valdés H, Manéro MH, Zaror CA. Oxidative regeneration of toluene-saturated natural zeolite by gaseous ozone: the influence of zeolite chemical surface characteristics. JOURNAL OF HAZARDOUS MATERIALS 2014; 274:212-220. [PMID: 24794812 DOI: 10.1016/j.jhazmat.2014.04.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 04/01/2014] [Accepted: 04/02/2014] [Indexed: 06/03/2023]
Abstract
In this study, the effect of zeolite chemical surface characteristics on the oxidative regeneration of toluene saturated-zeolite samples is investigated. A Chilean natural zeolite (53% clinoptilolite, 40% mordenite and 7% quartz) was chemically modified by acid treatment with hydrochloric acid and by ion-exchange with ammonium sulphate. Thermal pre-treatments at 623 and 823K were applied and six zeolite samples with different chemical surface characteristics were generated. Chemical modification of natural zeolite followed by thermal out-gassing allows distinguishing the role of acidic surface sites on the regeneration of exhausted zeolites. An increase in Brønsted acid sites on zeolite surface is observed as a result of ammonium-exchange treatment followed by thermal treatment at 623K, thus increasing the adsorption capacity toward toluene. High ozone consumption could be associated to a high content of Lewis acid sites, since these could decompose ozone into atomic active oxygen species. Then, surface oxidation reactions could take part among adsorbed toluene at Brønsted acid sites and surface atomic oxygen species, reducing the amount of adsorbed toluene after the regenerative oxidation with ozone. Experimental results show that the presence of adsorbed oxidation by-products has a negative impact on the recovery of zeolite adsorption capacity.
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Affiliation(s)
- Serguei Alejandro
- Laboratorio de Tecnologías Limpias (F. Ingeniería), Universidad Católica de la Santísima Concepción, Alonso de Ribera 2850, Concepción, Chile; Núcleo de Energías Renovables (F. Ingeniería), Universidad Católica de Temuco, Rudecindo Ortega 02950, Temuco, Chile
| | - Héctor Valdés
- Laboratorio de Tecnologías Limpias (F. Ingeniería), Universidad Católica de la Santísima Concepción, Alonso de Ribera 2850, Concepción, Chile.
| | - Marie-Hélène Manéro
- Université de Toulouse; INPT, UPS; Laboratoire de Génie Chimique, 4, Allée Emile Monso, F-31030 Toulouse, France; CNRS; Laboratoire de Génie Chimique; F-31030 Toulouse, France
| | - Claudio A Zaror
- Departamento de Ingeniería Química (F. Ingeniería), Universidad de Concepción, Concepción, Correo 3, Casilla 160-C, Chile
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Zaitan H, Korrir A, Chafik T, Bianchi D. Evaluation of the potential of volatile organic compound (di-methyl benzene) removal using adsorption on natural minerals compared to commercial oxides. JOURNAL OF HAZARDOUS MATERIALS 2013; 262:365-376. [PMID: 24061215 DOI: 10.1016/j.jhazmat.2013.08.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 08/26/2013] [Accepted: 08/27/2013] [Indexed: 05/28/2023]
Abstract
This study is dedicated to the investigation of the potential of volatile organic compounds (VOC) adsorption over low cost natural minerals (bentonite and diatomite). The performances of these solids, in terms of adsorption/desorption properties, were compared to commercial adsorbents, such as silica, alumina and titanium dioxide. The solids were first characterized by different physico-chemical methods and di-methyl benzene (dMB) was selected as model VOC pollutant for the investigation of adsorptive characteristics. The experiments were carried out with a fixed bed reactor under dynamic conditions using Fourier Transform InfraRed spectrometer to measure the evolution of dMB concentrations in the gaseous stream at the outlet of the reactor. The measured breakthrough curves yields to adsorbed amounts at saturation that has been used to obtain adsorption isotherms. The latters were used for determination of the heat involved in the adsorption process and estimation of its values using the isosteric method. Furthermore, the performances of the studied materials were compared considering the adsorption efficiency/cost ratio.
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Affiliation(s)
- Hicham Zaitan
- Laboratory LCMC, Faculty of Sciences and Techniques, University Sidi Mohamed BenAbdellah, B.P. 2202, Fez, Morocco.
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Rebollar-Pérez G, Carretier E, Lesage N, Moulin P. Vapour permeation of VOC emitted from petroleum activities: Application for low concentrations. J IND ENG CHEM 2012. [DOI: 10.1016/j.jiec.2012.01.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Long C, Guan J. Measurement of Diffusivity and Thermal Parameters of Gas Adsorption with a Volumetric Method. Ind Eng Chem Res 2012. [DOI: 10.1021/ie202184d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Chunxia Long
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou, 510006,
China
| | - Jianyu Guan
- School of Chemistry
and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China
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41
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Long C, Li Y, Yu W, Li A. Removal of benzene and methyl ethyl ketone vapor: comparison of hypercrosslinked polymeric adsorbent with activated carbon. JOURNAL OF HAZARDOUS MATERIALS 2012; 203-204:251-256. [PMID: 22204838 DOI: 10.1016/j.jhazmat.2011.12.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 11/04/2011] [Accepted: 12/05/2011] [Indexed: 05/31/2023]
Abstract
A novel hypercrosslinked polymeric adsorbent (HY-1) with high surface area and specific bimodal pore size distribution in the regions of micropore (0.5-2.0 nm) and meso-macropore (30-70 nm) was prepared. Adsorption properties of benzene and methyl ethyl ketone (MEK) vapors onto HY-1 were investigated and compared with a commercial microporous activated carbon (m-GAC). The equilibrium adsorption data showed that the adsorption capacities of benzene and MEK on HY-1 were larger than those of m-GAC at the higher relative pressure. The Dubinin-Radushkevich (D-R) equation was found to fit the experimental data well. The isosteric enthalpy of adsorption for benzene and MEK were calculated. The m-GAC exhibited much higher values of ΔH(st) for the VOCs than HY-1 at the whole loading studied, which can lead to significant temperature rises during the adsorption step. The results of dynamic experiments revealed that HY-1 had a good dynamic adsorption capacity with a longer breakthrough time and shorter length of mass transfer zone due to its specific bimodal property. Therefore, HY-1 will be a particularly efficient and competitive adsorbent for VOCs recovery, especially at medium-high concentrations.
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Affiliation(s)
- Chao Long
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Road, Nanjing 210046, China.
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Novel Bioreactors for Waste Gas Treatment. ENVIRONMENTAL CHEMISTRY FOR A SUSTAINABLE WORLD 2012. [DOI: 10.1007/978-94-007-2439-6_3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Rene ER, Montes M, Veiga MC, Kennes C. Biotreatment of a gas-phase volatile mixture from fibreglass and composite manufacturing industries. N Biotechnol 2011; 29:46-55. [PMID: 21911090 DOI: 10.1016/j.nbt.2011.08.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 06/28/2011] [Accepted: 08/29/2011] [Indexed: 10/17/2022]
Abstract
Acetone, toluene and styrene (ATS) are representative air pollutants emanating during the production process in fibreglass and composite manufacturing industries. In this study, the performance of a steady-state biofilter inoculated with the fungus Sporothrix variecibatus was tested at different empty bed residence times (EBRTs), and at different inlet concentrations of ATS, corresponding to total pollutant loading rates ranging from 30 to 490 gm(-3)hour(-1). Styrene was somewhat better removed (47-100%) in the biofilter than acetone (34-100%) and toluene (42-100%), with maximum elimination capacities (EC(max)) of 108, 72 and 144 gm(-3)hour(-1), for ATS, respectively. Besides, it was observed that, although increasing the concentration of ATS decreased their removal, the presence of toluene also decreased the EC(max) of both acetone and toluene in the ternary mixture. During transient operations, the biofilter was subjected to intermittent shutdown and re-start operations where the gas-phase pollutant flow was stopped for either 5 or 16d. It was observed that, for longer shutdown periods (16d), the biofilter required nearly 8-10d to reach similar removal patterns to those observed before the shutdown phase. Batch biodegradation tests were conducted, using Sporothrix-like microorganisms present in the leachate of the biofilter, with a mixture of ATS as the sole carbon source. Complete removal of ATS was observed within the test period of 168 hours. Styrene was degraded faster, with a specific substrate utilization rate of 0.9 mg styrenemg biomass(-1)hour(-1), followed by toluene (0.6) and acetone (0.44). The effectiveness of the biofilter to reach high total EC (321.3 gm(-3)hour(-1)), and withstand transient operations shows the robustness of this fungal-bioreactor and its suitability to handle emissions from a fibreglass and composite manufacturing industry.
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Affiliation(s)
- Eldon R Rene
- Chemical Engineering Laboratory, Faculty of Sciences, University of La Coruña, Rúa da Fraga 10, E-15008 La Coruña, Spain
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Talapatra A, Srivastava A. Ambient Air Non-Methane Volatile Organic Compound (NMVOC) Study Initiatives in India–A Review. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/jep.2011.21003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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45
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Bhatia S, Abdullah AZ, Wong CT. Adsorption of butyl acetate in air over silver-loaded Y and ZSM-5 zeolites: experimental and modelling studies. JOURNAL OF HAZARDOUS MATERIALS 2009; 163:73-81. [PMID: 18649998 DOI: 10.1016/j.jhazmat.2008.06.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2008] [Revised: 06/17/2008] [Accepted: 06/17/2008] [Indexed: 05/26/2023]
Abstract
Adsorption behaviours of butyl acetate in air have been studied over silver-loaded Y (Si/Al=40) and ZSM-5 (Si/Al=140) zeolites. The silver metal was loaded into the zeolites by ion exchange (IE) and impregnation (IM) methods. The adsorption study was mainly conducted at a gas hourly space velocity (GHSV) of 13,000 h(-1) with the organic concentration of 1000 ppm while the desorption step was carried out at a GHSV of 5000 h(-1). The impregnated silver-loaded adsorbents showed lower uptake capacity and shorter breakthrough time by about 10 min, attributed to changes in the pore characteristics and available surface for adsorption. Silver exchanged Y (AgY(IE)) with lower hydrophobicity showed higher uptake capacity of up to 35%, longer adsorbent service time and easier desorption compared to AgZSM-5(IE). The presence of water vapour in the feed suppressed the butyl acetate adsorption of AgY(IE) by 42% due to the competitive adsorption of water on the surface and the effect was more pronounced at lower GHSV. Conversely, the adsorption capacity of AgZSM-5(IE) was minimally affected, attributed to the higher hydrophobicity of the material. A mathematical model is proposed to simulate the adsorption behaviour of butyl acetate over AgY(IE) and AgZSM-5(IE). The model parameters were successfully evaluated and used to accurately predict the breakthrough curves under various process conditions with root square mean errors of between 0.05 and 0.07.
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Affiliation(s)
- Subhash Bhatia
- School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia.
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46
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Manjare SD, Ghoshal AK. Studies on Dynamic Adsorption Behaviour of Ethyl Acetate from Air on 5A and 13X Molecular Sieves. CAN J CHEM ENG 2008. [DOI: 10.1002/cjce.5450830210] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Kosuge K, Kubo S, Kikukawa N, Takemori M. Effect of pore structure in mesoporous silicas on VOC dynamic adsorption/desorption performance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:3095-102. [PMID: 17266336 DOI: 10.1021/la062616t] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The dynamic adsorption/desorption behavior of volatile organic compounds (VOCs) such as toluene (C7H8) and benzene (C6H6) was evaluated for three kinds of mesoporous silicas of SBA-15, all having almost the same mesopore size of ca. 5.7 nm, and a MCM-41 silica with a smaller pore size of 2.1 nm using a continuous three-step test. The fiberlike SBA-15 silica exhibited exceptionally good breakthrough behavior, a higher VOC capacity, and easier desorption. The fiberlike silica was composed through the catenation of rodlike particles. The rodlike silicas, by comparison, were proven to be less useful in dynamic adsorption processes because of lower dynamic VOC capacities despite having comparative porous parameters with the fiberlike silica. The large dynamic VOC capacity of the fiberlike silica was attributed to the presence of a bimodal pore system consisting of longer, one-dimensional mesopore channels connected by complementary micropores.
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Affiliation(s)
- Katsunori Kosuge
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569 Japan.
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Al-Muhtaseb SA. Effects of Adsorbent Characteristics on Adiabatic Vacuum Swing Adsorption Processes for Solvent Vapor Recovery. Chem Eng Technol 2006. [DOI: 10.1002/ceat.200600034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Manjare SD, Ghoshal AK. Studies on Adsorption of Ethyl Acetate Vapor on Activated Carbon. Ind Eng Chem Res 2006. [DOI: 10.1021/ie0603060] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sampatrao D. Manjare
- Chemical Engineering Group, Birla Institute of Technology and Science (BITS), Pilani 333 031, Rajasthan, India, and Department of Chemical Engineering, IIT Guwahati, North Guwahati, Guwahati 781 039, Assam, India
| | - Aloke K. Ghoshal
- Chemical Engineering Group, Birla Institute of Technology and Science (BITS), Pilani 333 031, Rajasthan, India, and Department of Chemical Engineering, IIT Guwahati, North Guwahati, Guwahati 781 039, Assam, India
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Nikolajsen K, Kiwi-Minsker L, Renken A. Structured Fixed-Bed Adsorber Based on Zeolite/Sintered Metal Fibre for Low Concentration VOC Removal. Chem Eng Res Des 2006. [DOI: 10.1205/cherd.05220] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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