TITLE:
Screening of Methyl Red Degrading Bacteria Isolated from Textile Effluents of Savar Area, Dhaka, Bangladesh
AUTHORS:
Ishteak Ahmed, Farhana Haque, Mirza A. T. M. Tanvir Rahman, Md. Anowar Khasru Parvez, Taslin Jahan Mou
KEYWORDS:
Textile Effluent, Metal Resistant, Dye Decolorizer, Proteus mirabilis
JOURNAL NAME:
Advances in Bioscience and Biotechnology,
Vol.11 No.7,
July
17,
2020
ABSTRACT: Physicochemical properties and metal contents of five
dye-based textile effluents collected in summer and winter season, 2016 from Savar,
Dhaka, Bangladesh were within the recommended acceptable limit. The average value
of all physicochemical parameters was found high in summer season except turbidity.
A total of 94 heavy metal resistant bacteria (46 gram positive & 48 gram negative)
were isolated from textile effluent samples and among
them 17 isolates were multi metal resistant. Highest tolerance level of the isolates
was shown at 10 mM concentration against Pb. All the heavy metal resistant bacterial
isolates were presumably grouped into 14 genera according to morphological and biochemical assay. Three isolates designated
WFB3c (65.41%), WFB4g (62%) and
SFB5c (60.07%) were found to potentially degrade dye as well as tolerate heavy metals. Three potential dye decolorizer isolates were screened out and most potential one (WFB3c)
was identified as Proteus mirabilis according to the
16S rRNA identification. The isolated
bacterial strain Proteus mirabilis would be a potential candidate for microbes based treatment to decolorize dye from
textile effluents.