The degradation of textile industry dyes using the effective bacterial consortium

Abstract

The effluents from textile industries without proper treatment contains a remarkable amount of synthetic dyes which are harmful to the environment and a big challenge globally to degrade it with a eco-friendly way. Conventional methods are extremely energy-consuming, non-effective and generate a toxic sludge impacting the environment. Several microorganisms can be utilized to treat these effluents. The research deals with five bacteria isolated from textile effluent and their consortium for the biodegradation ability of Novacron dyes. The isolates were identified through the Biolog™ identification system and molecular technique. Biodegradation was confirmed by measuring optical density (OD) optimizing conditions (pH 7.0, temperature 37 °C, 10 % inoculums and 100 mg/L dye) under static condition. The isolates started decolourization at 24 h whereas, the consortium started decolourization at 18 h and exhibited a maximum after 72 h. The presence of low molecular weight protein as metabolite supported the biodegradation and non hazardous to environment. This study revealed that these bacteria might have degradation potentials, and research results will help to set up dye removal eco-friendly methods to expose the dye effulents to environment in future.

Use of bacterial isolates in the treatment of textile dye wastewater: A review

“…However, the study found that the bacterial strains were affected by high Mordant black 11 concentrations, noting a decrease in dye degradation with an increase in dye concentration from 50mg/l-150 mg/l, with maximum degradation observed at 50 mg/l. Similar studies [ 89 , 90 ] have shown that Increased dye concentration in the culture medium creates a toxic environment that leads to enzyme inhibition, consequently decreasing the dye degradation efficiency. Other studies have also been reported [ 91 , 92 , 93 ] showing that biofilms perform better in dye degradation when compared their free forms under similar conditions.…”

Preparation and characterization of low-cost adsorbents for the efficient removal of malachite green using response surface modeling and reusability studies

“…ON934589.1 reached a maximum of 91.54% at 303 °C. Conversely, as the temperature rose to 313 °C, the decolorization activity decreased (53%) due to the loss of cell viability or inactivation of the decolorizing enzymes 65 . Arunprasath et al 4 observed that the optimum temperature (30 °C) was the optimum temperature for the decolorization (92%) of Malachite green dye by Lasiodiplodia strains.…”

Optimization study of the adsorption of malachite green removal by MgO nano-composite, nano-bentonite and fungal immobilization on active carbon using response surface methodology and kinetic study

“…ON934589.1 reached a maximum of 91.54% at 303 °C. Conversely, as the temperature rose to 313 °C, the decolorization activity decreased (53%) due to the loss of cell viability or inactivation of the decolorizing enzymes [71]. Arunprasath et al [2,72] observed that the optimum temperature (30 °C) was the optimum temperature for the decolorization (92%) of malachite green dye by Lasiodiplodia strains.…”