期刊名称：Environmental Health Engineering and Management
印刷版ISSN：2423-3765
电子版ISSN：2423-4311
出版年度：2019
卷号：6
期号：4
页码：225-232
DOI：10.15171/EHEM.2019.25
语种：English
出版社：Kerman University of Medical Sciences
摘要：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..
