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Abstract

This study represents the used of coconut frond (CF) to remove malachite green dye. This dye is toxic and will cause severe problems to environment. To investigate the potential of CF as adsorbent, a few parameters were studied such as adsorbent size, adsorbent dosage, initial dye concentration, contact time and pH. The results showed that the CF has the highest percentage of dye removal which is up to 99.91 % under optimum condition. The experimental data was analyzed with the Langmuir and Freundlich adsorption isotherm equations. The Langmuir isotherm model has given a better conformity than the Freundlich model with adsorption capacity of 18.98 mg/g. This study indicates that CF could be employed as a low cost adsorbent for the removal of malachite green dye.