Adsorption Isotherm and Kinetic Study of Methane on Palm Kernel Shell-Derived Activated Carbon
作者机构：School of Chemical EngineeringCollege of EngineeringUniversiti Teknologi MARA Cawangan TerengganuKampus Bukit BesiDungun 23200Malaysia Department of Basic ScienceJhang-Campus University of Veterinary and Animal ScienceLahore 35200Pakistan School of Chemical EngineeringCollege of EngineeringUniversiti Teknologi MARAShah Alam 40450Malaysia
出 版 物：《Journal of Bioresources and Bioproducts》 (生物质资源与工程（英文）)
年 卷 期：2023年第8卷第1期
页 面：66-77页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：funded by Ministry of Higher Education of Malaysia(MOHE) via Fundamental Research Grant Scheme College of Engineering, Universiti Teknologi MARA via Synergy Research
主 题：Palm kernel shell Activated carbon Methane adsorption Kinetic model Isotherm model
摘 要：Activated carbon(AC)was synthesized from palm kernel shell(PKS)using different activating agents,i.e.,steam,carbon dioxide(CO 2),and CO 2-steam,in order to analyze the impact of acti-vating agents on the pore opening of *** this study,AC produced from PKS was found to have great potential as an adsorbent for methane *** different molecular diffusivity and reac-tivity of the combination of CO 2 and steam succeeded in producing AC with the highest burn-offof 78.57%,a surface area of 869.82 m 2/g,a total pore volume of 0.47 cm 3/g,and leading to maximum methane gas adsorption capacity of 4.500 mol/*** types of ACs exhibited the best fit with the Freundlich isotherm model,with the correlation coefficient(R 2)ranging from 0.997 to 0.999,indicating the formation of multilayer *** addition,the adsorption kinetic data for all ACs followed the pseudo-first-order model showing that the rate of adsorption was dependent on both the adsorbent and the adsorbate and was governed primarily by physical ad-sorption between the pore surface and methane *** results of intraparticle diffusion model indicated that the adsorption of methane was affected by both pore diffusion and exterior layer diffusion due to the different adsorption rates.
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