Abstract
Activated carbons (ACs) with high specific surface area and abundant mesopores were prepared from coconut shell fibers through carbonization and NaOH/KOH activation. The influence of NaOH/KOH ratio,carbonization temperature,activation temperature,activation time and heating rate on the adsorption behavior of the ACs were investigated. The specific surface area of the obtained ACs under optimum conditions was 2 032 m2/g with 28% (volume fraction) of mesopores between 2 to 4 nm. The iodine adsorption value and methylene blue adsorption value of the AC were 1 435 and 495 mg/g,respectively.
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