Preparation and Properties of Activated Carbon from Palm Shell by Potassium Hydroxide Impregnation: Effects of Processing Parameters

The preparation and characterization of activated carbons (ACs) produced from palm shells, a carbonaceous agricultural solid waste, via potassium hydroxide (KOH) impregnation were studied. The effects of processing parameters: activation temperature (500-1000°C), KOH/char ratio (1:1-3:1) and activat...

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Bibliographic Details
Main Authors: Sathaporn Bhungthong, Darunee Aussawasathien, Kittipong Hrimchum, Sa-Nguansak Sriphalang
Format: บทความวารสาร
Language:English
Published: Science Faculty of Chiang Mai University 2019
Online Access:http://it.science.cmu.ac.th/ejournal/dl.php?journal_id=8764
http://cmuir.cmu.ac.th/jspui/handle/6653943832/64038
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Institution: Chiang Mai University
Language: English
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Summary:The preparation and characterization of activated carbons (ACs) produced from palm shells, a carbonaceous agricultural solid waste, via potassium hydroxide (KOH) impregnation were studied. The effects of processing parameters: activation temperature (500-1000°C), KOH/char ratio (1:1-3:1) and activation duration (1-3 h) on the properties of the prepared ACs were investigated. These properties included yield, pore development, Brunauer-Emmett-Teller (BET) surface area (SBET), iodine number, methylene blue (MB) adsorption, composition, and surface chemistry and morphology. The optimum conditions for activation were KOH/char ratio of 2:1 at a temperature of 900°C for duration of 1 h. Under these conditions, ACs with maximum SBET, micropore volume (Vm ) and total pore volume (VT) of 1643 m2 g-1, 0.899 cm3 g-1 and 0.978 cm3 g-1, respectively were obtained, with iodine number and MB adsorption of 871 and 54% respectively. Experimental results showed that it was feasible to produce ACs with a high surface area and high adsorption capability from palm shells.