Formulation Of An Efficient AB210 Azo Dye Degrading Indigenous Consortium And Dye Biodegradation Studies

摘要

Amongst total textile dyes' consumption, 60-70% commonly used textile dyes are azo dyes and a considerable amount is lost in the environment due to low dye exhaustion. Recent studies also profiled the carcinogenic, cytotoxic and mutagenic effects of these azo dyes. Biodegradation of azo dyes has received considerable attention since advanced biological methods have been developed for remediation, which is also regarded as eco-friendly, low cost and more efficient. A consortium was developed indigenously using a designed experiment and its dye degradation efficiency was tested using AB210 as a model dye. The consortium was found capable of degrading 100 mg/L of AB210 with a rate of 2.77 mg/L/hr, under static conditions at 35 ± 2°C in Bushnell Hass medium. The consortium was also capable of decolourizing AB210 repeatedly, without supplementation of nutrients, for 7 cycles. UV-Visible spectroscopy and visual examinations showed decolourization of dye. The ADMI value of the textile industry effluents was reduced by 77.56% upon bioremediation by the consortium.