Open AccessBiodegradation of azo dyes and dyes present in textile wastewaters using Bacillus sp. az28, obtained from industrial effluents
Author(s) -
Mahmudul Hassan Suhag,
KM Anis Ul Haque,
Zobaidul Hossen,
Abul Kalam Azad,
Muhammad Younus
Publication year - 2021
Publication title -
journal of bangladesh academy of sciences
Language(s) - English
Resource type - Journals
eISSN - 2224-7270
pISSN - 0378-8121
DOI - 10.3329/jbas.v45i1.54263
Subject(s) - biodegradation , effluent , chemistry , textile , fourier transform infrared spectroscopy , nuclear chemistry , pulp and paper industry , orange (colour) , organic chemistry , food science , environmental engineering , materials science , environmental science , chemical engineering , composite material , engineering
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