Microbial process for the decolorization of textile effluent containing azo, diazo and reactive dyes

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Abstract

A simple and practical biological process for the decolorization of coloured effluent from a textile company is described. A number of aerobic and anaerobic cultures able to decolorize dyes in textile effluent samples were isolated after prolonged enrichment culture from textile dyes-effluent samples. The decolorization of some component dyes of the effluent and of a mixture of dyes was achieved under anaerobic conditions, indicating that the bacteria were able to break the chromophoric bonds in the dye molecules. Several bacterial cultures capable of total decolorization of some effluent component dyes under anaerobic liquid fermentation conditions were isolated. One of the cultures decolorized Cibacron Red (reactive dye), Remazol Golden Yellow (azo dye) and Remazol Red (diazo dye) completely within 24-30 h fermentation process; Remazol Navy Blue (diazo dye) and Cibacron Orange (reactive dye) within 48 h; and Remazol Blue within 54 h. These decolorizations were permanent with no colour change upon exposure to ail: Only one dye, Remazol Turquoise Blue (a phthalocynaine dye), was partially reversibly decolorized. Potential applications of the cultures obtained in textile dye stuff effluent decolorization and treatment are discussed.
LanguageEnglish
Pages435-442
JournalProcess Biochemistry
Volume31
Issue number5
Publication statusPublished - Jun 1996

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Effluents
Textiles
Coloring Agents
Fermentation
Azo Compounds
Bacteria
Color
Molecules

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@article{e86f8d0668eb4941a77bcf80785b37b4,
title = "Microbial process for the decolorization of textile effluent containing azo, diazo and reactive dyes",
abstract = "A simple and practical biological process for the decolorization of coloured effluent from a textile company is described. A number of aerobic and anaerobic cultures able to decolorize dyes in textile effluent samples were isolated after prolonged enrichment culture from textile dyes-effluent samples. The decolorization of some component dyes of the effluent and of a mixture of dyes was achieved under anaerobic conditions, indicating that the bacteria were able to break the chromophoric bonds in the dye molecules. Several bacterial cultures capable of total decolorization of some effluent component dyes under anaerobic liquid fermentation conditions were isolated. One of the cultures decolorized Cibacron Red (reactive dye), Remazol Golden Yellow (azo dye) and Remazol Red (diazo dye) completely within 24-30 h fermentation process; Remazol Navy Blue (diazo dye) and Cibacron Orange (reactive dye) within 48 h; and Remazol Blue within 54 h. These decolorizations were permanent with no colour change upon exposure to ail: Only one dye, Remazol Turquoise Blue (a phthalocynaine dye), was partially reversibly decolorized. Potential applications of the cultures obtained in textile dye stuff effluent decolorization and treatment are discussed.",
author = "{Singh - Nee Nigam}, Poonam and IM Banat and D Singh and R Marchant",
year = "1996",
month = "6",
language = "English",
volume = "31",
pages = "435--442",
journal = "Process Biochemistry",
issn = "1359-5113",
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TY - JOUR

T1 - Microbial process for the decolorization of textile effluent containing azo, diazo and reactive dyes

AU - Singh - Nee Nigam, Poonam

AU - Banat, IM

AU - Singh, D

AU - Marchant, R

PY - 1996/6

Y1 - 1996/6

N2 - A simple and practical biological process for the decolorization of coloured effluent from a textile company is described. A number of aerobic and anaerobic cultures able to decolorize dyes in textile effluent samples were isolated after prolonged enrichment culture from textile dyes-effluent samples. The decolorization of some component dyes of the effluent and of a mixture of dyes was achieved under anaerobic conditions, indicating that the bacteria were able to break the chromophoric bonds in the dye molecules. Several bacterial cultures capable of total decolorization of some effluent component dyes under anaerobic liquid fermentation conditions were isolated. One of the cultures decolorized Cibacron Red (reactive dye), Remazol Golden Yellow (azo dye) and Remazol Red (diazo dye) completely within 24-30 h fermentation process; Remazol Navy Blue (diazo dye) and Cibacron Orange (reactive dye) within 48 h; and Remazol Blue within 54 h. These decolorizations were permanent with no colour change upon exposure to ail: Only one dye, Remazol Turquoise Blue (a phthalocynaine dye), was partially reversibly decolorized. Potential applications of the cultures obtained in textile dye stuff effluent decolorization and treatment are discussed.

AB - A simple and practical biological process for the decolorization of coloured effluent from a textile company is described. A number of aerobic and anaerobic cultures able to decolorize dyes in textile effluent samples were isolated after prolonged enrichment culture from textile dyes-effluent samples. The decolorization of some component dyes of the effluent and of a mixture of dyes was achieved under anaerobic conditions, indicating that the bacteria were able to break the chromophoric bonds in the dye molecules. Several bacterial cultures capable of total decolorization of some effluent component dyes under anaerobic liquid fermentation conditions were isolated. One of the cultures decolorized Cibacron Red (reactive dye), Remazol Golden Yellow (azo dye) and Remazol Red (diazo dye) completely within 24-30 h fermentation process; Remazol Navy Blue (diazo dye) and Cibacron Orange (reactive dye) within 48 h; and Remazol Blue within 54 h. These decolorizations were permanent with no colour change upon exposure to ail: Only one dye, Remazol Turquoise Blue (a phthalocynaine dye), was partially reversibly decolorized. Potential applications of the cultures obtained in textile dye stuff effluent decolorization and treatment are discussed.

M3 - Article

VL - 31

SP - 435

EP - 442

JO - Process Biochemistry

T2 - Process Biochemistry

JF - Process Biochemistry

SN - 1359-5113

IS - 5

ER -