Comparing the photocatalytic process efficiency using batch and tubular reactors in removal of methylene blue dye and COD from simulated textile wastewater

Journal of Water Reuse and Desalination

Poormohammadi, Ali¹  Ahmadian, Mohammad²  Rezaei, Mina³  Rahimi, Sajad⁴  Salmani, Behnam⁴ 

[1] Department of Environmental Health Engineering, Faculty of Health, Hamadan University of Medical Sciences, Hamadan, Iran;Department of Environmental Health Engineering, School of Public Health, Bam University of Medical Sciences, Bam, Iran;Iranian Academic Center for Education, Culture and Research (ACECR), Branch of Amirkabir, Iran;Social Development and Health Promotion Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran

关键词: batch reactor;    methylene blue dye;    photocatalyst;    photocatalytic;    titanium dioxide;    tubular reactor;   

DOI  :  10.2166/wrd.2016.190

学科分类：工程和技术（综合）

来源: IWA Publishing

【 摘 要 】

The aim of this study was photocatalytic degradation of methylene blue (MB) dye using titanium dioxide nanoparticles simulated using ultraviolet in batch and tubular reactors. In this study, the effect of different concentrations of titanium dioxide nanoparticles in the photocatalytic process on MB degradation was examined in batch and tubular reactors. The effect of dye concentration, titanium dioxide nanoparticle concentration and aeration level were examined on the process efficiency. Results showed that the removal of MB dye was directly related to the radiation time. The best removal efficiency of dye and chemical oxygen demand (COD) in the batch reactor was 100% and 42.2%, respectively, while it was 93% and 47.8% in the tubular reactor (in 1.2 g/L of titanium dioxide nanoparticles at 60 min). Moreover, as dye concentration increased, dye removal rate decreased. Making use of the batch model to remove dye and COD is more efficient and can be used on a larger scale due to the required removal efficiency and wastewater discharge standards.

【 授权许可】

CC BY-NC-ND