Toluene vapors adsorption in the fixed and fluidized bed by Nano-Zeolite
Irtiqa Imini Pishgiri Masdumiyat (Safety Promotion and Injury Prevention),
Vol. 3 No. 3 (2015),
30 March 2016
,
Page 160 - 155
https://doi.org/10.22037/meipm.v3i3.9090
Abstract
Background and Objectives: Toluene is one of the most contaminations in the industries such as petrochemicals and painting. This compound are known with toxic effect on the respiratory and nervous system. Adsorption of solvents in a suitable bed is an effective controlling method for volatile components. Adsorption have been evaluated in the fixed and fluidized bed. The goal of this study is investigation of toluene vapors adsorption on a fixed and fluidized bed of Nano-zeolite Y.
Materials and Methods: Dynamic concentration of toluene vapors in the range of 30-100 ppm were obtained which stable flow of toluene vapors was generated. Toluene vapors adsorption with 2 g of Nano-zeolite Y was assessed by gas chromatography equipped with flame ionization detector. Various parameters such as type of bed, air flow rate for bed fluidization, and toluene absorption capacity was investigated.
Results: Size of zeolite Y particle was estimated 154/34 ± 8/59 nm by scanning electron microscopy. Dynamic adsorption of toluene in the concentration of 30-100 ppm was saturated in the time of 40-50 min by 2 g Nano-zeolite Y. The results show flow rate of 3 L/min provide suitable flow for bed fluidization. Toluene vapors adsorption in the fluidized bed was higher than the fixed bed. Adsorption capacity of fixed and fluidized bed for 100 g of Nano-zeolite Y was evaluated 45/45 and 62/65 mg, respectively.
Conclusion: Smaller particle size increased the adsorption level but adhesion of particles in the fixed bed reduce the adsorption efficiency. In the fluidized bed, due to air flow, adhesion of nanoparticles was reduced and the adsorption of toluene vapors have been increased. It can be concluded that fluidized bed of Nano-particles adsorption is better than fixed bed.
How to cite this article: Ansari S, Jafari MJ, Sedghi R, Rezazadeh Azari M, Zendehdel R. Toluene vapors adsorption in the fixed and fluidized bed by Nano-Zeolite.Irtiqa Imini Pishgiri Masdumiyat (Safety Promotion and Injury Prevention). 2015; 3(3):155-160.
- Nano-zolite Y, Toluene, Fluidized bed
How to Cite
References
Weisel CP. Benzene exposure: an overview of monitoring methods and their findings. Chemico-biological interactions. 2010;184(1):58-66.
Wallace L. Environmental exposure to benzene: an update. Environmental health perspectives. 1996;104(6):1129-35.
2014; Available from: www.atsdr.cdc.gov/substances/toxsubstance.asp.
Morata TC, Fiorini AC, Fischer FM, Colacioppo S, Wallingford KM, Krieg EF, et al. Toluene-induced hearing loss among rotogravure printing workers. Scandinavian journal of work, environment & health. 1997:289-98.
Fischman CM, Oster JR. Toxic effects of toluene: a new cause of high anion gap metabolic acidosis. JAMA. 1979;241(16):1713-715.
Grasso P, Sharratt M, Davies D, Irvine D. Neurophysiological and psychological disorders and occupational exposure to organic solvents. Food and chemical toxicology. 1984;22(10):819-52.
Rosenberg NL, Kleinschmidt‐DeMasters B, Davis KA, Dreisbach JN, Hormes JT, Filley CM. Toluene abuse causes diffuse central nervous system white matter changes. Annals of neurology. 1988;23(6):611-14.
2014; Available from: www.monographs.iarc.fr/ENG/Monographs/vol71/mono71-36.pdf.
Stockdale A. The Use of Cation Exchange Resins in Natural Water Trace Metals Research Lancaster University: Lancaster University; 2005.
Rahmani AR, Mahvi AH, Mesdaghinia AR and Nasseri S. Investigation of ammonia removal from polluted waters by Clinoptilolite zeolite. 2004;1(2):127-37.
Faulconer EK, von Reitzenstein NVH, Mazyck DW. Optimization of magnetic powdered activated carbon for aqueous Hg (II) removal and magnetic recovery. Journal of hazardous materials. 2012;199:9-14.
Qi G, Wang Y, Estevez L, Duan X, Anako N, Park A-HA, et al. High efficiency nanocomposite sorbents for CO2 capture based on amine-functionalized mesoporous capsules. Energy&Environmental Science. 2011;4(2):444-52.
Faghihian H, Moayed M, Firooz A, Iravani M. Synthesis of a novel magnetic zeolite nanocomposite for removal of Cs+ and Sr 2+ from aqueous solution: Kinetic, equilibrium, and thermodynamic studies. Journal of colloid and interface science. 2013;393:445-51.
Mofidi A, Asilian H, Jafari AJ. Adsorption of volatile organic compounds on fluidized activated carbon bed. Health Scope. 2013;2(2):84-9.
Zendehdel M. Solimannejad M Interaction between NaY Zeolite and boric Acid: a preliminary
computational study. Chemistry of Solid Materials. 2013;1(2):57-63.
Weitkamp J. Zeolites and catalysis. Solid State Ionics. 2000;131(1):175-88.
Ahmed S, Chughtai S, Keane MA. The removal of cadmium and lead from aqueous solution by ion exchange with Na Y zeolite. Separation and purification technology. 1998;13(1):57-64.
Ghazi-Khansari M, Zendehdel R, Pirali-Hamedani M, Amini M. Determination of morphine in the plasma of addicts in using Zeolite Y extraction following high-performance liquid chromatography. Clinica Chimica Acta. 2006;364(1):235-8.
Lutz W. Zeolite Y: Synthesis, Modification, and Properties—A Case Revisited. Hindawi Publishing Corporation.2014;2014:1-21.
Kalhor M, Khodaparast N, Zendehdel M. Facile synthesis of 2-arylbenzimidazoles by nano-CuY zeolite as an efficient and eco-friendly nanocatalyst. Letters in Organic Chemistry. 2013;10(8):573-7.
Amber I, Odekhe RO and Sanusi SY. Experimental determination of the adsorption capacity of synthetic Zeolite A/water pair for solar cooling applications. Journal of Mechanical Engineering Research. 2012; 4(4): 142-47.
Brosillon S, Manero M-H, Foussard J-N. Mass transfer in VOC adsorption on zeolite: experimental and theoretical breakthrough curves. Environmental science & technology. 2001;35(17):3571-575.
Wang J, Zhang Y, Feng C, Li J, Li G. Adsorption Capacity for Phosphorus Comparison among Activated Alumina, Silica Sand and Anthracite Coal. Journal of Water Resource and Protection.2009;4, 260-64.
ACGIH T. BEIs. Threshold limits values for chemical substances and physical agents Biological exposure indices Cincinnati: ACGIH; 2007.
Liu K-Y, Wey M-Y. Filtration of nano-particles by a gas–solid fluidizedbed. Journal of hazardous materials. 2007;147(1):618-24.
Prieto O, Fermoso J, Irusta R. Photocatalytic degradation of toluene in air using a fluidized bed photoreactor. International Journal of Photoenergy. 2007;2007:1-8.
Song W, Tondeur D, Luo L, LiJ. VOC adsorption in circulating gas fluidized bed. Adsorption. 2005;11(1):853-58.
Shi J, Zhao X, Hickey RF, Voice TC. Role of adsorption in granular activated carbon-fluidized bed reactors. Water environment research. 1995;67(3):302-9.
Pires J, Carvalho A, de Carvalho MB. Adsorption of volatile organic compounds in Y zeolites and pillared clays. Microporous and Mesoporous Materials. 2001;43(3):277-87.
Fuertes A, Marban G, Nevskaia D. Adsorption of volatile organic compounds by means of activated carbon fibre-based monoliths. Carbon. 2003;41(1):87-96.
Khan FI, Ghoshal AK. Removal of volatile organic compounds from polluted air. Journal of Loss Prevention in the Process Industries. 2000;13(6):527-45.
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