Adsorption of congo red on mesoporous activated carbon prepared by CO2 physical activation

查看全文 作　　者：Mingjie [1,2,3]Ma;Huijuan [3,4]Ying;Fangfang [2,3]Cao;Qining [3,4]Wang;Ning [1,2,3]Ai

机构地区：[1]College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China;[2]Zhejiang Province Key Laboratory of Biomass Fuel,Hangzhou 310014,China;[3]Biodiesel Laboratory of China Petroleum and Chemical Industry Federation,Hangzhou 310014,China;[4]National Chemical and Chemical Engineer Experiment Teaching Center,National Chemical and Chemical Engineer Simulation Experiment Teaching Center,Zhejiang University of Technology,Hangzhou 310014,China

出　　处：《Chinese Journal of Chemical Engineering》索引2020年第28卷第4期,共8页

基　　金：financially supported by the Zhejiang Provincial Natural Science Foundation of China(LY16B060014);the Program for the Joint Research Fund for Overseas Chinese,Hong Kong and Macao Scholars of National Natural Science Foundation of China(Grant No.21628601);the Innovation and Development of Marine Economy Demonstration。 摘　　要：This research demonstrates the production of mesoporous activated carbon from sargassum fusiforme via physical activation with carbon dioxide.Central composite design was applied to conduct the experiments at different levels by altering three operating parameters.Activation temperature(766-934℃),CO2 flow rate(0.8-2.8 L·min^-1)and activation time(5-55 min)were the variables examined in this study.The effect of parameters on the specific surface area,total pore volume and burn-out rate of activated carbon was studied,and the influential parameters of methylene blue adsorption value were identified employing analysis of variance.The optimum conditions for maximum methylene blue adsorption value were:activation temperature=900℃,activation time=29.05 min and CO2 flow rate=1.8 L·min(-1).The activated carbon produced under optimum conditions was characterized by BET,FTIR and SEM.The adsorption behavior on congo red was studied.The effect of parameters on the adsorbent dosage,temperature,PH and initial congo red concentration was investigated.The adsorption properties of the activated carbon were investigated by kinetics.The equilibrium removal rate and maximum adsorption capacity reaches up to 94.72%,234 mg·g^-1,respectively when initial congo red concentration is 200 mg·L^-1 under adsorbent dosage(0.8 g·L^-1),temperature(30℃),PH7. 关键词：Sargassum fusiforme Mesoporous activated carbon Congo red Response surface method KINETICS

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Adsorption of congo red on mesoporous activated carbon prepared by CO2 physical activation

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