Preparation and characterization of bio-adsorbent from coconut husk for remazol red dye removal

Abstract

This study aimed to evaluate the effectiveness of bio-adsorbent from coconut husk for the removal of remazol red dye. The characteristics of coconut husk bio adsorbent are studied using Fourier transform infrared (FT-IR) and scanning electron microscope (SEM). The effects of different types of adsorbent and the effects of initial dye concentration on the removal of remazol red dyes were evaluated. The results showed that the percentage removal of remazol red dye by the treated bio adsorbent is higher compared to the untreated bio adsorbent, especially by activated coconut husk with 5 hours burning time in the furnace. The SEM results also show that the treated bio adsorbent morphology is more porous and rougher to improve the adsorption process. Meanwhile, FTIR analysis shows the reduction of peaks because of the removal of much lignin and hemicelluloses. The best adsorbent recorded is activated coconut husk at 5 hours burning time when it achieved 75% removal.