Testing the advanced oxidation processes on the degradation of Direct Blue 86 dye in wastewater

Egyptian Journal of Aquatic Research

Mohamed A. Hassaan¹  Ahmed El Nemr¹  Fedekar F. Madkour² 

[1] Environmental Division, National Institute of Oceanography and Fisheries, Kayet Bey, El-Anfoushy, Alexandria, Egypt;Marine Science Department, Faculty of Science – Port Said University, Port Said, Egypt;

关键词: Ozone;    Ultraviolet;    Direct Blue 86;    Advanced oxidation;    Dye degradation;   

DOI  :  10.1016/j.ejar.2016.09.006

来源: DOAJ

【 摘 要 】

This work tests the viability of applying ozone (O3) and O3 combined with ultraviolet (UV) to degrade the content of synthetic wastewater containing Direct Blue 86 (DB-86) dye. The tested parameters, which included pH, initial concentration of DB-86 dye and time of reaction, were tested in a batch reactor to achieve optimum operating circumstances. The results obtained in this study showed that pH and initial concentration of DB-86 dye controlled the efficiency of the decolorization process. The maximum decolorization was obtained at pH 11. More than 98% of color removal was reported after 35 min of O3 treatment (for 100 ppm dye concentration). Kinetic analyses showed that color removal of DB-86 dye followed first-order kinetics. The rate of color removal was primarily relative to the initial DB-86 dye concentration. The effect of seawater on the efficiency of the process was studied. Gas Chromatography Mass Spectrum analysis of treated synthetic DB-86 dye solution was performed at the end of the pre-treatment time to study the final degradation products of DB-86 dye. The obtained results revealed that ozonation processes had reduced the zooplankton toxicity belonging to the raw solution and had improved the biodegradability of the DB-86 dye wastewater.

【 授权许可】

Unknown