Nature is a self-regulatory in terms of protecting the environment. The advent of technology, however, is up against, in some cases, to nature and remains constant threat to the environment and entities within by producing hazardous chemicals that are beyond the permissible limits. Banana peel is a waste material that can be used to treat dye molecules effluvia particularly from textile industry. A banana peel, thus, was activated both thermally and chemically at different conditions. It was subjected to 0.5–2.5 M sulfuric acid concentration, and 50–90 °C temperature for 1–5 hrs activation time. Based on this study, banana peel activated at 1.5 M acid concentration, 70 °C and for 3 hrs showed efficacy of about 90%. The synthesized activated banana peel at the specified condition was characterized using different techniques such as SEM and BET that showed that it is a porous material with 302 m2/g. To further scrutinize the capacity of the adsorbent, adsorption of dye molecules in a range of different variables, namely adsorption time from 20–140 min, pH 1.0–7.0, adsorbent dose 1–4 g/L and initial dye concentration 20–80 mg/L was conducted. The process of this adsorption was optimized using design expert statistical software an optimal removal efficiency 90.5%was obtained at adsorption time of 60 min, pH 3, adsorbent dose of 2 g/L and initial dye concentration of 40 mg/L over a wide range of adsorption time (10–160 min) .adsorption kinetics using pseudo first and second order models was studied at 2 g/L adsorbent dose 40 mg/L dye concentration for period of 10–160 min was performed. Besides, the isotherm study was conducted at 2 g/L adsorbent dose for a wide range of 20–125 mg/L dye initial concentration and fitted the data to Langmuir and Freundlich models. As a result, pseudo second order kinetics model and Langmuir isotherm model were the best fit to describe the adsorption process. The reusability test conducted showed that activated banana peel can be used repeatedly five times before its performance declines below 50%. All told, the results so obtained are litmus test that the activated banana peel bio-adsorbent can be used in industry, if not, in pilot scale to treat textile effluents.