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:: Volume 6 - Issue 4 (Autumn 12-2019) (In press) ::
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Removal of styrene by the synthesized ZnO nanoparticles coated on the activated carbon adsorbent in the presence of UV irradiation
Mojtaba Nakhaei Pour , Hossein Ali Rangkooy , Fereshteh Jahani , Ameneh Golbaghi , Hosein Shojaee- Farah Abady , Leila Nematpour
Corresponding author: Occupational Health Engineering, Department of Occupational Health, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran , Lnematpour94@gmail.com
Abstract:   (84 Views)
Background: Volatile organic compounds are the major environmental pollutants causing adverse effects on the human health and the environment, therefore, tremendous effort has been put toward eliminating these compounds.
Methods: In this study, the effect of synthesized nanoparticles on the removal of styrene from gas phase by photocatalytic process under UV irradiation in the cylindrical photoreactor was studied. The activated carbon-zinc oxide (AC-ZnO) catalysts were prepared at different weight ratios (6%, 12%, and 18%) of ZnO. The prepared catalyst was characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and Brunauer Emmett-Teller (BET) analyses. The effects of various parameters, such as concentrations of styrene, various weight percentage (wt%) of nanoparticles, and UV irradiation, were investigated. The efficiency of the AC-ZnO catalyst was determined based on its adsorption capacity, breakthrough time, and removal efficiency.
Results: It was revealed that the photocatalytic removal efficiency of styrene was high in the presence of both ZnO nanoparticle and AC under UV light. Under optimal conditions, the efficiency of UV/ACZnO 18%, UV/AC-ZnO 12%, and UV/AC-ZnO 6% catalysts was 77%, 86%, and 83%, respectively. By increasing the concentration of input styrene, the photocatalytic removal efficiency was reduced, while the adsorption capacity of styrene increased.
Conclusion: According to the results, the AC-ZnO 12% exhibited higher activity compared to other photocatalysts. Also, the amount of stabilized ZnO nanoparticles on the activated carbon affects the elimination rate of styrene.
Keywords: Photocatalysis, Activated carbon, Styrene, Zinc oxide
Full-Text [PDF 843 kb]   (58 Downloads)    
Type of Study: Research | Subject: General
Received: 2019/12/1 | Accepted: 2019/12/1 | Published: 2019/12/1
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مجله مدیریت و مهندسی بهداشت محیط Environmental Health Engineering And Management Journal
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