Optimization of bio-decolorization Acid Red ۱۴ using bacterial strain isolated from wastewater

Background and Aim : Synthetic dyes are used today in textiles, food, paper, and plastics. Among the synthetic dyes, Azo dyes are the most widely used dyes in the textile industry, which enter the environment as pollutants through the wastewater of textile factories and pollute natural ecosystems such as soil, groundwater, and organisms. Therefore, it is very important to remove these contaminants from textile effluents. Methods : In this study, the ability to decolorize Acid Red ۱۴ dye was investigated using a bacterial strain isolated from the effluent of Kashan textile factory in the presence of carbon sources of fructose, glucose, xylose, lactose, and sucrose. Results : This strain decolorized Acid Red ۱۴ dye at ۵۰ ppm with pH ۷ and temperature of ۳۷ ° C in the incubator and the presence of fructose, after ۲۴ h and ۴۸ h, ۱۶%, and ۹۲%, respectively. The analysis of the visible-ultraviolet spectrophotometer showed that the discoloration is due to a microbial analysis by the bacterial strain. Conclusion : The bacteria strain isolated from the effluent of Kashan textile factory decolorized Acid Red ۱۴ dye at the especial condition.

کلیدواژه ها:

Decolorization ، Azo dyes ، Bacteria ، Optimization ، Waste water