Umesh Kumar^1,, Bhalchandra Vibhute², Nikhil Sharma³, Abhinav Sahay³

The design of low-cost adsorption columns for the removal of industrial effluents or other adsorption processes aids in the treatment of wastewater. The present work was intended to treat or minimise the level of contaminants in polluted water using adsorption technology. To fulfil the objectives of the study, banana stem and Alkaline-treated banana stem biochar (ATBSB) were used for the adsorption study, and these two banana tissue were used as adsorbents. Methylene blue (MB) dye was used as an adsorbate. The removal of MB dye from waste water using banana stem and ATBSB were investigated via batch mode in these studies. The given parameter were used pH 2-12, contact time 10-120 minute, adsorbent dose 0.2-2 gram, rpm 150, temperature 300k and dye concentration 25,50,75 and 100 ppm. The various adsorption isotherms like Langmuir and Freundlich were studies. In this experiment, kinetic studies include fist order, second order were carried out. The results of the adsorption study showed that the percentage removal efficiency was found to be for banana stem, 93.3 % at Ph 8, contact time 80 minute, rpm 150, temperature 300 k and 1 gram adsorbent in 50 ml MB dye solution at initial concentration 25ppm. For Alkaline-treated banana stem biochar, 96.59 % in 0.8 gram adsorbent dose with respect of constant time, pH, rpm, and temperature. The study concluded that the maximum percentage by dye removal of Alkaline-treated banana stem biochar was more efficient than that of banana stems. This work can help in designing low-cost adsorption columns for the removal of industrial effluents or other adsorption processes which help to maintain health hazards, water pollution, ecosystems and sustainable development.

Methylene blue dyes, Adsorption isotherm, Banana stem, Alkaline-treated banana stem biochar