Application of an adsorptive-thermocatalytic process for BTX removal from polluted air flow

Journal of Environmental Health Science Engineering

Ahmad Jonidi Jafari²  Roohollah Rostami¹ 

[1] Department of Environmental Health Engineering, Semnan University of Medical Sciences, School of Health, Semnan, Iran;Department of Environmental Health Engineering, Iran University of Medical Sciences, School of Health, Tehran, Iran

关键词: Zeolite;    Nanoparticles;    Chemical process;    Air pollution;    Aromatic organics;   

Others  :  804550
DOI  :  10.1186/2052-336X-12-89

 received in 2013-08-05, accepted in 2014-05-17,  发布年份 2014

【 摘 要 】

Background

Zero valent iron and copper oxide nanoparticles (30-60 nm) were coated on a bed of natural zeolite (Clinoptilolite) with 1-2 mm grains and arranged as a dual filter in a stainless steel cylindrical reactor (I.D 4.5 cm and L = 30 cm) to investigating the coated bed removal efficiency for BTX. The experiments were conducted in three steps. First, with an air flow of 1.5 L/min and temperature range of 38 (ambient temperature) to 600°C the BTX removal and mineralization was surveyed. Then, in an optimized temperature the effect of flow rate and pollution loading rate were surveyed on BTX removal.

Results

The BTX removal at 300 and 400°C were respectively up to 87.47% and 94.03%. Also in these temperatures respectively 37.21% and 90.42% of BTX mineralization were achieved. In the retention times of 14.1 s and 7.05 s, respectively 96.18% and 78.42% of BTX was removed.

Conclusions

According to the results, this adsorptive-thermocatalytic process with using Clinoptilolite as an adsorbent bed and combined Fe⁰ and Cu₂O nanoparticles as catalysts can be an efficient and competitive process in the condition of high flow rate and high pollution loading rate with an adequate process temperature of 350°C.

【 授权许可】

   
2014 Rostami and Jonidi Jafari; licensee BioMed Central Ltd.

【 图 表 】

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【 参考文献 】

• [1]Keshavarzi H, Halak FS, Mirmohamadi M: Survey and measurement of VOCs in closed domestic ambient and public places. Environ Stud 2003, 29:41-46.
• [2]Mathur AK, Majumder CB, Chatterjee S: Combined removal of BTEX in air stream by using mixture of sugar cane bagasse, compost and GAC as biofilter media. J Hazard Mater 2007, 148:64-74.
• [3]Franco M, Chairez I, Poznyak T, Poznyak A: BTEX decomposition by ozone in gaseous phase. J Environ Manage 2012, 95(Supplement):S55-S60.
• [4]Guo H, Lee S, Li W, Cao J: Source characterization of BTEX in indoor microenvironments in Hong Kong. Atmos Environ 2003, 37:73-82.
• [5]Hinwood AL, Rodriguez C, Runnion T, Farrar D, Murray F, Horton A, Glass D, Sheppeard V, Edwards JW, Denison L, Whitworth T, Eiser C, Bulsara M, Gillett RW, Powell J, Lawson S, Weeks I, Galbally I: Risk factors for increased BTEX exposure in four Australian cities. Chemosphere 2007, 66:533-541.
• [6]Grassian VH: Environmental Catalysis. Boca Raton: CRC Press Taylor & Francis Group; 2005.
• [7]Hong S-S, Lee G-H, Lee G-D: Catalytic combustion of benzene over supported metal oxides catalysts. Korean J Chem Eng 2003, 20:440-444.
• [8]Garcia T, Solsona B, Taylor SH: Naphthalene total oxidation over metal oxide catalysts. Appl Catal Environ 2006, 66:92-99.
• [9]Li P, Miser DE, Rabiei S, Yadav RT, Hajaligol MR: The removal of carbon monoxide by iron oxide nanoparticles. Appl Catal Environ 2003, 43:151-162.
• [10]Fan B, Li H, Fan W, Jin C, Li R: Oxidation of cyclohexane over iron and copper salen complexes simultaneously encapsulated in zeolite Y. Appl Catal Gen 2008, 340:67-75.
• [11]Rostami R, Jafari AJ, Kalantari RR, Gholami M: Survey of modified clinoptilolite zeolite and cooper oxide nanoparticles-containing modified clinoptilolite efficiency for polluted air BTX removal. Iran J Health Environ 2012, 5:1-8.
• [12]Hernandez M, Corona L, Gonzalez A, Rojas F, Lara V, Silva F: Quantitative study of the adsorption of aromatic hydrocarbons (benzene, toluene, and p-Xylene) on dealuminated clinoptilolites. Ind Eng Chem Res 2005, 44:2908-2916.
• [13]Kalachev A: Nanomaterials and related products. In Nanomaterials and Related Products. 1st edition. Edited by GmbH P. Berlin, Germany: PlasmaChem; 2014.
• [14]Wang JB, Li CH, Huang TJ: Study of partial oxidative steam reforming of methanol over Cu–ZnO/samaria-doped ceria catalyst. Catal Lett 2005, 103:239-247.
• [15]Rostami R, Jonidi Jafari A, Rezaei Kalantari R, Gholami M, Esrafili A: Benzene-toluene-xylene (BTX) removal from polluted airflow by combined filter of zero valence iron and copper oxide nanoparticles on Iranian amended clinoptilolite bed. J Babol Univ Med Sci 2012, 14:23-29.
• [16]Rostami R, Jonidi Jafari A: Effect of zero-valent iron nanoparticles on VOCs removal from air with a modified zeolite bed. J Environ Stud 2013, 39:59-65.
• [17]McDermott HJ, Ness SA: Sample collection device methods for gases and vapors. In Air Monitoring for Toxic Exposures. 2nd edition. Hoboken, New Jersey: John Wiley and Sons; 2004:161-208.
• [18]Pendergrass SM: NIOSH manual of analytical methods. In Hydrocarbons, Aromatic. 4th edition. Atlanta: NIOSH; 2003:2-7.
• [19]Das BM: Soil Mechanics Laboratory Manual. 6th edition. USA: Oxford University Press; 2001.
• [20]ASTM: Standard Test Method for Volume Weights, Water-Holding Capacity, and Air Capacity of Water-Saturated Peat Materials. Volume D2980. West Conshohocken, PA: ASTM International; 2010.
• [21]Hamdi B, Houari M, Hamoudi SA, Kessaïssia Z: Adsorption of some volatile organic compounds on geomaterials. Desalination 2004, 166:449-455.
• [22]Zhou H, Cai H, Xue H, Lu J, Song Y, Zhang C: The application of adsorption to remove aromatic hydrocarbons from flue gas. IEEE 2010, 1-4.
• [23]Das D, Gaur V, Verma N: Removal of volatile organic compound by activated carbon fiber. Carbon 2004, 42:2949-2962.
• [24]François G: Environmental catalysis. Catal Today 2004, 89:255-268.
• [25]Wang S-P, Zhang T-Y, Su Y, Wang S-R, Zhang S-M, Zhu B-L, Wu S-H: An investigation of catalytic activity for CO Oxidation of CuO/Ce x Zr1– x O2 catalysts. Catal Lett 2008, 121:70-76.
• [26]Yang JS, Jung WY, Lee GD, Park SS, Jeong ED, Kim HG, Hong S-S: Catalytic combustion of benzene over metal oxides supported on SBA-15. J Ind Eng Chem 2008, 14:779-784.
• [27]Silva E, Catalão R, Silva J, Vaz F, Oliveira F, Ribeiro FR, Magnoux P, Belin T, Ribeiro F: Zeolite-coated ceramic foams for VOCs removal. In Studies in Surface Science and Catalysis. Volume 174. Edited by Antoine Gédéon PM, Florence B. Elsevier; 2008::1195-1198. [Part B]
• [28]Kwong CW, Chao CYH, Hui KS, Wan MP: Removal of VOCs from indoor environment by ozonation over different porous materials. Atmos Environ 2008, 42:2300-2311.
• [29]Zou L, Luo Y, Hooper M, Hu E: Removal of VOCs by photocatalysis process using adsorption enhanced TiO2-SiO2 catalyst. Chem Eng Process 2006, 45:959-964.
• [30]Garetto TF, Apesteguıía CR: Oxidative catalytic removal of hydrocarbons over Pt/Al2O3 catalysts. Catal Today 2000, 62:189-199.
• [31]Lu C-Y, Wey M-Y: Simultaneous removal of VOC and NO by activated carbon impregnated with transition metal catalysts in combustion flue gas. Fuel Process Technol 2007, 88:557-567.
• [32]Li J, Xu X, Hao Z, Zhao W: Mesoporous silica supported cobalt oxide catalysts for catalytic removal of benzene. J Porous Mater 2008, 15:163-169.
• [33]Dinaro JL, Howard JB, Green WH, Tester JW, Bozzelli JW: Analysis of an elementary reaction mechanism for benzene oxidation in supercritical water. Proc Combust Inst 2000, 28:1529-1536.
• [34]Li J, Bai SP, Shi XC, Han SL, Zhu XM, Chen WC, Pu YK: Effects of temperature on benzene oxidation in dielectric barrier discharges. Plasma Chem Plasma Process 2008, 28:39-48.
• [35]Abumaizar RJ, Kocher W, Smith EH: Biofiltration of BTEX contaminated air streams using compost-activated carbon filter media. J Hazard Mater 1998, 60:111-126.
• [36]Lu C, Chu W, Lin M-R: Removal of BTEX vapor from waste gases by a trickle bed biofilter. J Air Waste Manage Assoc 2000, 50:411-417.
• [37]Sleiman M, Conchon P, Ferronato C, Chovelon J-M: Photocatalytic oxidation of toluene at indoor air levels (ppbv): Towards a better assessment of conversion, reaction intermediates and mineralization. Appl Catal Environ 2009, 86:159-165.
• [38]Demeestere K, Dewulf J, De Witte B, Beeldens A, Van Langenhove H: Heterogeneous photocatalytic removal of toluene from air on building materials enriched with TiO2. Build Environ 2008, 43:406-414.
• [39]Ramirez AM, Demeestere K, De Belie N, Mäntylä T, Levänen E: Titanium dioxide coated cementitious materials for air purifying purposes: preparation, characterization and toluene removal potential. Build Environ 2010, 45:832-838.
• [40]Chen J, Li G, He Z, An T: Adsorption and degradation of model volatile organic compounds by a combined titania-montmorillonite-silica photocatalyst. J Hazard Mater 2011, 190:416-423.
• [41]Schmid S, Jecklin MC, Zenobi R: Degradation of volatile organic compounds in a non-thermal plasma air purifier. Chemosphere 2010, 79:124-130.
• [42]Wu H, Wang L, Zhang J, Shen Z, Zhao J: Catalytic oxidation of benzene, toluene and p-xylene over colloidal gold supported on zinc oxide catalyst. Catal Commun 2011, 12:859-865.