Biodegradation of azo dyes and dyes present in textile wastewaters using Bacillus sp. az28, obtained from industrial effluents

Authors

  • Mahmudul Hassan Suhag Department of Chemistry, Shahjalal University of Science and Technology, Sylhet, Bangladesh
  • KM Anis Ul Haque Department of Chemistry, Shahjalal University of Science and Technology, Sylhet, Bangladesh
  • Md Zobaidul Hossen Department of Genetic Engineering and Biotechnology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
  • Abul Kalam Azad Department of Genetic Engineering and Biotechnology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
  • Muhammad Younus Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, USA

DOI:

https://doi.org/10.3329/jbas.v45i1.54263

Keywords:

Biodegradation, Decolorization, Azo Dye, COD, BOD, FTIR

Abstract

The bacterial isolate Bacillus sp. AZ28, obtained from industrial effluent, demonstrates a great capacity to degrade various azo dyes (methyl orange (MO), magneson I (MI), novacron dark blue (NDB), and novacron red FN 3GF (NRF3)), and azo dye-containing textile effluent (TE). The degradation was evident by decolorization of dyes, and the decolorization efficiency of 84-95% was achieved within 14-72 h under optimum conditions, such as 37˚C, pH 7, inoculation size 8%, 1% glucose, and 1% beef extract. The extent of decolorization of individual dye was determined by UV–Vis spectroscopy, and products of biodegradation were analyzed by FTIR spectroscopy and TLC analyses. Chemical analysis showed that the COD and BOD values were significantly reduced after treatment. Thus, the biodegradation ability under mild conditions suggests that Bacillus sp. AZ28 has potential in textile effluent treatment.

J. Bangladesh Acad. Sci. 45(1); 117-122: June 2021

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Published

2021-07-15

How to Cite

Suhag, M. H., Haque, K. A. U., Hossen, M. Z., Azad, A. K., & Younus, M. (2021). Biodegradation of azo dyes and dyes present in textile wastewaters using Bacillus sp. az28, obtained from industrial effluents. Journal of Bangladesh Academy of Sciences, 45(1), 117–122. https://doi.org/10.3329/jbas.v45i1.54263

Issue

Vol. 45 No. 1 (2021)

Section

Short Communication