Nanoporous activated carbon prepared from karanj (Pongamia pinnata) fruit hulls for methylene blue adsorption

作者：Islam Md Azharul; Sabar S; Benhouria A; Khanday W A; Asif M; Hameed B H

来源：Journal of the Taiwan Institute of Chemical Engineers, 2017, 74: 96-104.

DOI：10.1016/jjtice.2017.01.016

• Activated carbon
• Adsorption
• Dye
• KOH activation
• Karanj

In this study, karanj (Pongamia pinnata) fruit hulls were used as a precursor to prepare low-cost activated carbon with a large surface area through KOH activation. The prepared activated carbon (KFHAC) was characterized through pore structural analysis, scanning electron microscopy, and Fourier transform infrared spectroscopy. KFHAC presents a BET surface area of 828.30 m(2)/g, a micropore volume of 0.36 cm(3)/g, and an average pore size of 19.92 A The adsorption performance of KFHAC was evaluated using methylene blue (MB) as the model adsorbate. Adsorption experiments indicated that the pseudo -second -order kinetic and Langmuir adsorption isotherm models can accurately describe the adsorption process. The maximum adsorption capacities (q(m)) of MB were 154.8, 203.4, and 239.4 mg/g at 30 degrees C, 40 degrees C, and 50 degrees C, respectively. This study indicates that karanj fruit hull is a promising precursor for the production of low-cost and efficient activated carbon with a large surface area.

• 出版日期2017-5