Preparation of microwave-assisted palm trunk based activated carbon for adsorption of methylene blue dye
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Date
2017-05
Authors
Mohd Shafiq Bin Abd Latif
Journal Title
Journal ISSN
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Abstract
In this study, the adsorption process by the palm trunk based activated carbon was
investigated in batch process at various initial dye concentration (25-300 mg/L),
contact time (0-24 hours) and solution temperature (30-60 ⁰C). The PTAC was
prepared by physical activation which involve microwave radiation and carbon
dioxide (CO2) gasification were applied. The optimum PTAC preparations obtained
from response surface methodology (RSM) were at radiation power and activation
time of 501 W and 4.00 minutes, respectively. This sample has 91.25% MB dye
removal and 32.37% PTAC yield. This sample has 772.35 m2
/g BET surface area, 0.45
cm3
/g pore volume and 74.3% fixed carbon content. The pores developed were
mesopores type which have 3.88 nm average pore size diameter. The adsorption
isotherm was fitted with Freundlich model while the kinetics data was best represented
by the pseudo first-order model. The adsorption process of MB onto PTAC was
endothermic and spontaneous.