Bacterial decolorization of textile azo dye acid orange by staphylococcus hominis RMLRT03

Abstract

A bacterial strain RMLRT03 with ability to decolorize textile dye Acid Orange dye was isolated from textile effluent contaminated soil of Tanda, Ambedkar Nagar, Uttar Pradesh (India). The decolorization studies were performed in Bushnell and Haas medium (BHM) amended with Acid Orange dye. The bacterial strain was identified as Staphylococcus hominis on the basis of 16S rDNA sequence. The bacterial strain exhibited good decolorization ability with glucose and yeast extract supplementation as cosubstrate in static conditions. The optimal condition for the decolorization of Acid Orange dye by Staphylococcus hominis RMLRT03 strain were at pH 7.0 and 35°C in 60 h of incubation. The bacterial strain could tolerate high concentrations of Acid Orange dye up to 600 mg l-1. The high decolorizing activity under natural environmental conditions indicates that the bacterial strain has practical application in the treatment of dye containing wastewaters.

Isolation, screening and molecular identification of novel bacterial strain removing methylene blue from water solutions

“…Disposal of synthetic dyes improperly in wastewater depicts acute toxic effects on aquatic flora and fauna, causing severe environmental problems (Singh et al 2014). Therefore, the increasing amount of dyes like methylene blue (MB) because of industrial activities indicates a probable hazard to the ecosystem.…”

“…A considerable attention has been directed in evaluating the capability of microorganism in decolorization and degradation of dyes. The removal of MB by different microorganisms was investigated (Ong et al 2005;Fulekar et al 2013;Singh et al 2014;Ranga et al 2015). Therefore, microbial processes play a vital role in the safe clean-up of environmental messes (Abbas et al 2014).…”

Biotechnological Potential of Aspergillus niger UCP 1353 and the Use of Activated Coal on the Discoloration of Dye Orange II

“…Among these the azo dyes, composing 70% of the dyes produced in this way, having a great participation in the contamination of aquatic effluents (Barreto et al, 2011). These azo dyes can be transformed or degraded by a variety of microorganisms, including aerobic and anaerobic bacteria and fungi (Banatet al, 1996;Chang and Kuo, 2000;Singh et al, 2014).…”

“…They are nutritional factors (carbon and nitrogen sources) and physical (temperature, pH and agitation) that can affect the degradation of azo dyes (Mielgo et al, 2001;Singh et al, 2014).…”

Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water

“…The particular pollutant of interest in this investigation is Acid Orange (AO); a mono-azo dye commonly used in industry for dying, weaving and tanning. Azo dyes are aromatic compounds with one or more -N=N-groups [13], as shown in Figure 1, and considered as electron deficient xenobiotic compounds because they possess electron withdrawing groups, generating electron deficiency in the molecule and making them resistant to degradation [14]. Azo dyes and their breakdown products are often harmful to living organisms and during the dying process, 15% of world dye production is lost and released into effluents [15][16][17].…”