Coconut fibers as a natural adsorbent to brilliant coomassie blue dye adsorption

The adsorption method is widely studied by the scientific community for the treatment of water containing pollutants, since water quality and its preservation is a current topic of great importance. Therefore, the present work analyzed the potential of coconut fibers as a natural adsorbent for the adsorption process of Brilliant Coomassie Blue dye solutions, using UV-vis spectrophotometry as a method to analyze the removal process. For this, the parameters of adsorbent dosage, initial concentration and contact time were evaluated. Furthermore, the kinetic study was carried out applying the pseudo-first order and pseudo-second order models. It was observed that coconut fiber is an easy-to-use material as an adsorbent, resulting in a maximum adsorbed amount of 3.04 mg g-1, with 83.5% being the highest percentage of removal. Adsorption reached equilibrium within 24 hours and the Pseudo-second order model fitted the process better, indicating chemical adsorption.