Bioremediation of hazardous Metanil yellow dye by using Trichoderma and Azotobacter biofertilizers

Abstract

The textile industry is one of the major contributors to water and soil pollution due to the high amount of wastewater generated during textile processing. The wastewater contains organic components and dyes, which are harmful to the environment, and have adverse effects on human health. The seepage of these components into the environment can cause long term damage. To address this issue, the use of Trichoderma and Azotobacter biofertilizers as biosorbents for the removal of Metanil yellow dye was investigated. These environmentally friendly biosorbents help in plant growth and also have the ability to reduce the harmful element. In this study, batch experimentation was carried out to investigate the effectiveness of Tricoderma and Azotobacter as biosorbents for the removal of Metanil yellow dye. The results showed that both biosorbents were highly effective in removing the dye, and >93.89% of Metanil Yellow dye was successfully removed. The Langmuir isotherm was found to be the best fit for both biosorbents, with Langmuir capacities of 30.15 mg/g and 50.54 mg/g for Trichoderma and Azotobacter, respectively. The intraparticle and pseudo-second-order models were found to be suitable for the experimental data. The study also includes the validation of reusability of both biosorbents effectively without causing any harm to the environment. The investigation study revealed the potential of biosorbents for the removal of harmful components without disturbing the environment.