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Abstract
Bioremediation capacity of azo dyes in simulated characteristics of textile wastewater from the microalgae Chlorella vulgaris was determined. The evaluation of the percentage of removal of Erionyl Turquoise was carried out through the measurement of the change of the final and initial absorbance during 15 days. The microalgae were exposed to different concentrations of the azo dye (30, 70 y 130ppm) and an initial pH of 9. Concurrently, the behavior of the microalgae C. vulgaris was compared with a natural pH of 8.3. The highest percentage of removal was 91.7% and this was obtained with a concentration of 70 ppm and an initial pH of 9, while the lowest percentage of removal was 51.5% with a concentration of 130 ppm of the Erionyl Turquoise and an initial pH of 9. In this way, it can be established that the microalgae C. vulgaris has a considerable ability to remove azo dyes under some characteristics of textile wastewater.
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