Biodecolorization of textile azo dye using Bacillus sp. strain CH12 isolated from alkaline lake

Abstract

Graphical abstract

Catalytic Degradation of Orange II by MnIII(TPPS) in Basic Hydrogen Peroxide Medium: A Detailed Kinetic Analysis

“…A significant contribution to pollution of the environment comes from organic dyes as waste components produced by the textile industry . It is estimated that presently on the market there are more than 100 000 different commercially available dyes and their annual production exceeds 700 thousand tons . Azo dyes, which incorporate a characteristic ‐N=N‐ moiety as chromophore in their structure, constitute 70 % of the total textile dyestuff production .…”

“…Textile dyes are designed to be resistant to chemical, biochemical or photochemical degradation, therefore conventional degradation methods are not always effective and traces of such dyes are highly persistent in natural environments. [1b], , Usually the degradation of organic dyes is understood as “bleaching” by homo‐ or heterogeneous reactions. This can be achieved by shifting the wavelength of absorbed light outside the visible range or by chemical decomposition of chromophores .…”

“…Due to the limitations of currently used methods, there is still a strong demand for the development of eco‐friendly economically viable systems that would minimize the amount of chemicals involved in the process and avoid generation of toxic byproducts. [3b] Increasingly, biological treatment methods using microorganisms are tested ,. [3b] Another possibility is the use of efficient and environmentally friendly catalysts based on transition metal complexes.…”

Molecular identification of dye degrading bacterial isolates and FT-IR analysis of degraded products

“…Currently, the major anthropogenic source is textile industries. In textile industries, the main environmental concern is colored water, which originated from the dyeing process [2,3]. Jodhpur and Balotra cities in western Rajasthan are the big clusters of textiles, dyeing and printing industries.…”

“…Jodhpur and Balotra cities in western Rajasthan are the big clusters of textiles, dyeing and printing industries. Since dyes are formulated to be chemically and photolytically stable, they are highly persistent in natural environments [3][4][5][6]. They are chemically diverse in nature and can be divided into classes such as reactive, triphenylmethane, heterocyclic and polymeric dyes [3,7].…”