Oxidative Decolorization of Direct Blue 71 Azo Dye by Saccharomyces cerevisiae Catalyzed by Nano Zero-valent Iron
Journal Title: Annual Research & Review in Biology - Year 2016, Vol 11, Issue 2
Abstract
The textile industries wastewater is one of the most serious sources of environmental pollution due to presence of the textile dyes. In the present study, five bacteria and three fungi were isolated on Mineral Salt Medium (MSM) supplemented with 200 mg/l of Direct Blue 71 azo dye. The most active isolate was identified by 18S-rRNA gene sequencing method as Saccharomyces cerevisiae. The decolorization and degradation of Direct Blue 71 azo dye by S. cerevisiae was investigated in presence and absence of nano-scaled zero-valent iron (NZVI). The metabolic pathway of the dye degradation was elucidated using GC/MS analysis to identify the metabolites. This procedure was supported by enzymes assay and bioinformatics analysis. Dye-decay curves showed 96% dye removal after 72 hr. in absence of the catalyst; while it was 100% after 48 hr. in presence of 0.1% NZVI. High efficiency to decolorize Direct Blue71 enables this yeast to be used in biological treatment of industrial effluent containing such azo-dyes.
Authors and Affiliations
Nashwa A. H. Fetyan, Ahmed Z. Abdel Azeiz, Ismail M. Ismail, Seham A. Shaban
Keywords
Related Articles
- EP ID EP351047
- DOI 10.9734/ARRB/2016/28843
- Views 103
- Downloads 0
Bioactive Compounds of the Salivary Glands from Aedes aegypti with Anti-Hemostatic Action
Blood-sucking arthropods evolved a salivary cocktail of anti-hemostatic, platelet antiaggregant and vasodilators components that neutralize the effects of hemostasis and allow a successful blood supply occurs. In salivar...
Antibiotic Susceptibility Profile of Bacteria Isolated from Drinking Water Sources in Amai Kingdom, Delta State, Nigeria
Aims: To investigate the susceptibility profile of bacterial isolates from hand dug wells and borehole waters within the Amai Kingdom, in Ukwuani Local Government Area of Delta State. Place and Duration of Study: Depart...
Effects of Eruca sativa Leaves Extracts on Testes, Fertility Potential and Testosterone Concentration in Male Rats
Background: Eruca sativa (E.S.) is a worldwide herbaceous plant usually used for salad preparations and in traditional medicine for their therapeutic properties. Aims: This study aimed to determine the effect of ethanol...
Bioecology of Sediment-Polychaete in Estuarine Subtidal Habitat on Bonny River, Nigeria
Midchannel subtidal Polychaete Fauna were collected at the Bonny-estuary and analysed for their composition and abundance in relation to biotic and abiotic factors that are associated with life history strategies through...
Taxonomy of Earthworm Species Collected from East Coast of Guyana
Earthworms contribute significantly towards the proper functioning of our ecosystem and are environmentally and economically beneficial to the well-being of other organisms. These soil dwelling organisms serve to enhance...