Volume 5, Number 1 (Winter 2016)                   JOHE 2016, 5(1): 10-19 | Back to browse issues page



PMCID: 0

XML Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Yazdani Aval M, Mortazavi S, Asilian Mahabadi H. Evaluation of absorption efficiency of Zeolite ZSM-5 in the removal of styrene vapors. JOHE. 2016; 5 (1) :10-19
URL: http://johe.rums.ac.ir/article-1-188-en.html

Assistant Prof., Dept. of Occupational Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. , Mortazav@modares.ac.ir
Abstract:   (807 Views)

Background: Volatile organic compounds (VOCs) are one of the most important and prevalent air pollutants. The vapor produced as a result of the vaporization ‎of these compounds, even at very low concentrations, is harmful to the environment and human health. Thus, the aim of this study was to evaluate the removal of styrene vapor from the air flow using Zeolite ‎(ZSM-5) in a continuous flow reactor.

Materials and Methods: This cross-sectional study was conducted at a laboratory scale. Styrene concentrations of 200 and 300 ppm were selected for this study and steam saturation method was used to obtain the desired ‎dynamic concentration. The desired concentration of dynamic styrene vapor was prepared in a fireproof cubic continuous flow reactor (canopy). ZSM-5 was synthesized and ground in a flat steel plate with standard mesh number of 20-40 and was used to remove the styrene vapors. In order to evaluate the removal efficiency, two variables of time and initial concentration of pollutant were investigated. In addition, scanning electron microscopy (SEM), X-ray powder diffraction (XRD), the Brunauer–Emmett–Teller (BET) technique, and energy-dispersive X-ray spectroscopy (EDX) were used to investigate the surface and quality of the obtained adsorbent.

Results: The results of SEM and XRD indicated the uniform surface and high purity of the synthesized zeolite. Adsorption breakthrough and saturation for 200 ppm of styrene concentration occurred in the first 35 and 510 minutes of the experiment, and for 300 ppm of styrene concentration, occurred 23 and 385 minutes after the beginning of the test, respectively,.

Conclusions: ZSM-5 showed a high level of efficiency in the removal of styrene vapors from polluted air; thus, it can be used to remove this pollutant from large industrial environments.

Full-Text [PDF 591 kb]   |   Full text (HTML)   (523 Downloads) |   |   Full-Text (HTML)  (18 Views)  
Type of Study: original article | Subject: Epidemiology

References
1. Cooper CD, Alley FC. Air pollution control: A design approach. 4th ed. Florida, United States: Waveland Pr Inc; 2010.
2. Thitakamol B, Veawab A, Aroonwilas A. Environmental impacts of absorption-based CO 2 capture unit for post-combustion treatment of flue gas from coal-fired power plant. International Journal of Greenhouse Gas Control 2007; 1(3):318-42.
3. Lillo-Ródenas MA, Cazorla-Amorós D, Linares-Solano A. Behaviour of activated carbons with different pore size distributions and surface oxygen groups for benzene and toluene adsorption at low concentrations. Carbon N Y 2005; 43(8):1758-67.
4. Lim M, Rudolph V, Anpo M, Lu GQM. Fluidized-bed photocatalytic degradation of airborne styrene. Catal Today 2008; 131(1-4):548-52.
5. Maciá-Agulló JA, Cazorla-Amorós D, Linares-Solano A, Wild U, Su D, Schlögl R. Oxygen functional groups involved in the styrene production reaction detected by quasi in situ XPS. Catal Today 2005; 102:248-53.
6. Cavani F, Teles JH. Sustainability in catalytic oxidation: an alternative approach or a structural evolution? ChemSusChem 2009; 2(6):508-34.
7. Greenberg MI. Occupational, industrial, and environmental toxicology. 1st ed. Amsterdam, Netherlands: Elsevier Health Sciences; 2003.
8. Winder Ch, Stacey NH. Occupational toxicology. 2nd ed. Boca Raton, Florida, United States: CRC Press; 2004.
9. Vodicka P, Koskinen M, Arand M, Oesch F, Hemminki K. Spectrum of styrene-induced DNA adducts: the relationship to other biomarkers and prospects in human biomonitoring. Mutat Res Rev Mutat Res 2002; 511(3):239-54.
10. Cherry N, Gautrin D. Neurotoxic effects of styrene: further evidence. Br J Ind Med 1990; 47(1):29-37.
11. Djeribi R, Dezenclos T, Pauss A, Lebeault JM. Removal of styrene from waste gas using a biological trickling filter. Eng Life Sci 2005; 5(5):450-7.
12. Khan FI, Ghoshal AK. Removal of volatile organic compounds from polluted air. J Loss Prev Process Ind 2000; 13(6):527-45.
13. Yin J, Wu H, Thiyagarajan M, Hong SE, Neisser M, Cao Y. Methods and materials for removing metals in block copolymers. Az Electronic Materials (Luxembourg) S.A.R.L.; 2015 May; No.: US9040659 B2
14. Ikhlaq A, Brown DR, Kasprzyk-Hordern B. Catalytic ozonation for the removal of organic contaminants in water on ZSM-5 zeolites. Appl Catal B 2014; 154-155:110-22.
15. Abumaizar RJ, Kocher W, Smith EH. Biofiltration of BTEX contaminated air streams using compost-activated carbon filter media. J Hazard Mater 1998; 60(2):111-26.
16. 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(1-2):64-74.
17. Aizpuru A, Malhautier L, Roux JC, Fanlo JL. Biofiltration of a mixture of volatile organic compounds on granular activated carbon. Biotechnol Bioeng 2003; 83(4):479-88.
18. Dehghanzadeh R, Torkian A, Bina B, Poormoghaddas H, Kalantary A. Biodegradation of styrene laden waste gas stream using a compost-based biofilter. Chemosphere 2005; 60(3):434-9.
19. Pérez-Ramírez J, Christensen CH, Egeblad K, Christensen ChH, Groen JC. Hierarchical zeolites: enhanced utilisation of microporous crystals in catalysis by advances in materials design. Chem Soc Rev 2008; 37(11):2530-42.
20. Song W, Justice RE, Jones CA, Grassian VH, Larsen SC. Synthesis, characterization, and adsorption properties of nanocrystalline ZSM-5. Langmuir 2004; 20(19):8301-6.
21. Zhu H, Liu Z, Kong D, Wang Y, Yuan X, Xie Z. Synthesis of ZSM-5 with intracrystal or intercrystal mesopores by polyvinyl butyral templating method. J Colloid Interface Sci 2009; 331(2):432-8.
22. Gao W, Jin R, Chen J, Guan X, Zeng H, Zhang F, et al. Titania-supported bimetallic catalysts for photocatalytic reduction of nitrate. Catal Today 2004; 90(3-4):331-6.
23. Curcio MS, Oliveira MP, Waldman WR, Sánchez B, Canela MC. TiO2 sol-gel for formaldehyde photodegradation using polymeric support: photocatalysis efficiency versus material stability. Environ Sci Pollut Res Int 2014; 22(2):800-9.
24. Golbabaei F, Rahmanzadeh E, Moussavi GR, Faghihi zarandi A, Baneshi MR. Fixed bed adsorption of hexavalent chromium onto natural zeolite from air stream. Journal of Health and Safety at Work 2014; 4(2):1-14.
25. Lillo-Ródenas MA, Fletcher AJ, Thomas KM, Cazorla-Amorós D, Linares-Solano A. Competitive adsorption of a benzene–toluene mixture on activated carbons at low concentration. Carbon N Y 2006; 44(8):1455-63.
26. Deng B, Kim ES. Co-adsorption of trichloroethylene and arsenate by iron-impregnated granular activated carbon. Water Environ Res 2016; 88(5):394-402.
27. Asilian H, Khavanin A, Afzali M, Dehestani S. Removal of styrene from air by natural and modified zeolite. Health Scope 2012; 1(1):7-11.
28. Davis WT, Air & Waste Management Association. Air pollution engineering manual. 2nd ed. New York, United States,: John Wiley & Sons, Inc.; 2000.

Add your comments about this article : Your username or email:
Write the security code in the box

© 2015 All Rights Reserved | Journal of Occupational Health and Epidemiology

Designed & Developed by : Yektaweb