The Effect of Bacteria on Dye

Abstract

Microbiological and parasitological contamination of vegetables, water and soil in rural communities of a municipality was assessed. Samples were analyzed. Physical and chemical analyses were done. Background: Textile Industries are the major sector for social and economic perspective that discharge huge number of dye stuff containing recalcitrant compounds, pigments and dye etc. into the water. Aim: The aim of this study is to isolate and identify the textile dye degrading bacteria from textile effluents and examine the performance of bacteria that was able to completely decolorize the studied effluent after 3 weeks of incubation under agitation in an aerobic bioreactor. Methods and Materials: All the samples were collected and characterized. The isolated bacteria was characterized and identified by using cultural and biochemical techniques. Microbiological studied of contamination of water and soil in rural communities of a municipality was assessed. The decolorization of dye was measured using spectrophotometer of isolated bacteria. mixed isolates of species was selected for this study. Samples were analyzed. Physical and chemical analyses were done . Textile effluents (TEs) without correct treatment cause high environmental impact because they display several problems mainly due to toxicity and recalcitrance of dyestuffs. This study investigated the biosurfactant productions potentials of bacterial isolated from dye effluent. Enumeration, identification and characterization of the isolates were carried out using standard microbiological methods. The potential and ability to produce biosurfactants was determined using blood haemolytic tests, drop collapse and emulsification techniques. Results: gram negative and positive was the most effective decolorizers of textiles dyes than others bacterial species. A total of 16 organisms were isolated from different locations sampled, which are the predominant bacteria obtained from the three locations. Haemolysis results revealed that all the isolated bacterial strains exhibited haemolytic activity. The result of drop collapse test showed that all the isolated organisms had good collapsing ability, and all the isolated organism had positive oil spreading and emulsification ability. This study showed gram negative and positive species are potential biosurfactants producers and should be studied in greater details as strains improvement may enhance the activity of biosurfactants.