Evaluation of Advanced Oxidation Processes for Removing Acid Red 14 Dye from Aqueous Solutions

آب و فاضلاب

Bita Ayati¹  Pooyan Khishbakht²  Hossein Ganjidoust³ 

[1] Assoc. Prof. of Environmental Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran;MSc Student of Environmental Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran;Prof. of EnvironmEntal Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran;

关键词: AOP;    pH;    COD;    Oxidant Concentration;    Acid Red 14;   

DOI  :  

来源: DOAJ

【 摘 要 】

In this article, the degradation efficiencies of UV/TiO2, UV/H2O2, and UV/O3 processes are compared in the removal of Acid Red 14 which is the most commonly used dye in the textile industry. Results show UV/TiO2 recorded a degradation efficiency of above 90% in 30 minutes (pH=3, [Dye]=40mg/L, [TiO2]=400mg/L), UV/H2O2 degraded 75mg/L of dye (a degradation efficiency of more than 90%) in 160 minutes, and the efficiency of UV/O3 was above 95% in only 15 minutes using an ozone concentration of 0.9gr/h ([Dye]=250mg/L, pH=9). Judging on their high efficiencies, the use of these processes is recommended for the treatment of textile effluents. It may be noted, however, that the two processes of UV/H2O2 and UV/O3 are effective in both dye degradation and COD removal, but UV/O3 is costly and needs especial equipment. UV/TiO2 is not effective in COD removal and requires the post-treatment separation of nano-particles (using a centrifuge or sedimentation process). Thus, the UV/H2O2 process seems to be the easiest and most effective process in the treatment of textile effluent due to its simplicity and effective COD removal in a short time.

【 授权许可】

Unknown