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Biotransformation of CI Acid Blue 113 and other dyes by Shewanella sp. P6
Author(s) -
Biala Sunil,
Chauhan Priyanka,
Chadha Bhupinder Singh,
Singh Bikram,
Saini Harvinder Singh
Publication year - 2013
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/cote.12045
Subject(s) - chemistry , effluent , incubation , naphthalene , sodium , salt (chemistry) , anoxic waters , chlorine , nuclear chemistry , biotransformation , aniline , wastewater , chromatography , organic chemistry , environmental chemistry , biochemistry , environmental engineering , engineering , enzyme
The isolate P 6 , an indigenous Shewanella sp., was able to decolorise 90% of CI Acid Blue 113 in just 30 min of incubation under anoxic conditions. The decolorisation potential of cells was not significantly affected even in the presence of 2% (w/v) sodium chloride and 8% (w/v) sodium sulphate. Mass spectrometric analysis detected the formation of aniline sodium salt, 1,4‐diaminonaphthalene, 5‐amino‐8‐(phenylamino)‐naphthalene‐1‐sulphonic acid sodium salt and 8‐(phenylamino)‐naphthalene‐1‐sulphonic acid sodium salt. Further, cells of P 6 decolorised the raw effluent collected from the equalisation tank of a textile industry wastewater treatment plant. The water‐soluble dyes/intermediates present in the sludge, generated after chemical flocculation of raw effluent, were transformed by P 6 cells within 24 h of incubation under anoxic conditions. Thus, isolate P 6 has a potential application in the biological treatment of liquid and solid waste of textile processing plants because of its efficient decolorisation and transformation properties.