Journal
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
Volume 113, Issue -, Pages 386-390Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ibiod.2016.05.003
Keywords
Microwave irradiation; Coffee shell; High specific surface area activated carbon; Hydrogen storage capacity; KOH
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Coffee shell is an environmental concern to china along with steady growth of coffee production. This study attempt to characterize high specific surface area activated carbon (HSSA-AC). HSSA-AC was prepared from carbonized material which obtained from coffee shell by microwave irradiation. Textural properties and surface chemistry of HSSA-AC were found to be strongly depending on the activation time, KOH/C ratio and particle size. The textural properties of the samples were investigated by means of scanning electron microscope analyzer (SEM), cryogenic N-2 adsorption, whereas, surface chemistry was probed through Fourier Transform Infrared (FTIR) spectrometer (Maldhure and Ekhe, 2011) and Hydrogen storage performance was tested by H-2 adsorption. Maximum surface area of 3149 m(2) g(-1), Iodine adsorption value 2566 mg/g, Methylene Blue adsorption value 47.5 mL 0.1 g(-1), the hydrogen adsorption value 0.91 wt% at 14 MPa and yield 39% was observed in case of microwave treated sample at activation time 9 min, KOH/C ratio 5 and particle size 0.25-0.71 mm. Results revealed usefulness of microwave treatment in influencing surface area of HSSA-AC which could be used in a hydrogen storage material research application. (C) 2016 Elsevier Ltd. All rights reserved.
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