Biodegradation of synthetic dyes of textile effluent by microorganisms: an environmentally and economically sustainable approach

Abstract

Due to its overall environmental impact, the residual dye in the wastewater from the synthetic dye manufacturing and textile industries is a global concern. The discharge contains a high content of pigments and other additives, possessing complex structures. As per the requirement for dyed clothing, dyestuff in the effluent is less susceptible to acids, bases, and oxygen. Thus, conventional physical and chemical methods are not always efficient in degrading the dyes. Some microorganisms growing in an area affected with textile effluent have the capability to utilize the dyes as a source of carbon or nitrogen or both. As a very clean, inexpensive, and sufficient alternative, bioremediation of textile wastewater using these microorganisms has gained major popularity. This review primarily centers the contribution of bacteria in this sector and the isolation of such bacteria from textile effluent. A secondary focus is discussing the factors which influence the performance by different bacteria.

Ecofriendly biodegradation of Reactive Black 5 by newly isolated Sterigmatomyces halophilus SSA1575, valued for textile azo dye wastewater processing and detoxification

“…6 ). Typically, azo dyes have low carbon content, which makes biodegradation of azo dyes extremely difficult without any supplemental sources of carbon or nitrogen 37 , 39 , 40 . Except sucrose, which was slightly inhibited dye decolorization, other added carbon sources (glucose, galactose, maltose, lactose and starch) could significantly ( p < 0.001) enhance RB5 decolorization by S. halophilus SSA1575 (Fig.…”

Performance of a Newly Isolated Salt-Tolerant Yeast Strain Sterigmatomyces halophilus SSA-1575 for Azo Dye Decolorization and Detoxification

“…Typically, azo dyes have low carbon content, which makes biodegradation extremely difficult (Khelifi et al, 2009;Eskandari et al, 2019). Therefore, adding adequate external carbon sources is always necessary for effective dye decolorization (Jamee and Siddique, 2019). Glucose was found to be an ideal candidate in optimizing dye decolorization efficiency (Khelifi et al, 2009;Song et al, 2017;Eskandari et al, 2019).…”

Soybean peroxidase‐catalyzed degradation of a sulfonated dye and its azo‐cleavage product

“…Azo dyes released to surface waters constitute a significant environmental burden that is in urgent need of attention 1 . Dyes are used heavily in a range of industries, such as textiles, pharmaceuticals, distilleries, cosmetics, leather and tanneries, printing and electroplating, with a worldwide annual production of 800 000 t, 2,3 70% of which are azo dyes 4 . Around 15% of these dyes are discharged into industrial wastewater leading to severe water contamination 5 .…”