Abstract
In this study, biochar derived from Jackfruit peel (JA) via the pyrolysis at 500 °C for 2 h was used as an adsorbent to remove Methylene Blue (MB) from aqueous solution. Effects of pH, contact time, and initial MB concentration were investigated. Isotherm models, such as Langmuir, Freundlich, Sips, and Dubinin-Radushkevich, were applied to estimate the adsorption in nature. The results indicated that the Sips and Freundlich models gave the best fit with experimental datas. The maximum adsorption capacity of MB calculated from Langmuir was 39.87 mg/g at 306K, pH = 11, and time = 60 min. The E value evaluated from Dubinin-Radushkevich smaller than 8 kJ/mol indicated that the MB adsorption of JA followed a physical process.
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