Adsorption of carbon dioxide by coconut activated carbon modified with Cu/Ce |
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| Authors: | LI Fenrong YI Honghong TANG Xiaolong NING Ping YU Qiongfen KANG Dongjuan |
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| Affiliation: | College of Environmental Science and Engineering,Kunming University of Science & Technology |
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| Abstract: | A series of the coconut activated carbons(CAC) based absorbents modified with Cu and Ce(Cu/CAC,Cu/Ce/CAC) were prepared by impregnation technology for carbon dioxide capture.The adsocrption equilibriums of CO2 on Cu/CAC and Cu/Ce/CAC were measured.The results showed that the adsorption capacity of CO2 onto the activated carbon modified with Cu/Ce increased with the decreasing temperature in the same pressure.The adsorption capacity of CO2 on Cu/CAC was higher than that of the blank CAC,and compared with the Cu/CAC,the adsorption capacity of CO2 of Cu/Ce/CAC with the mass ratio of Cu/Ce=30 was improved at 298 and 303 K.In addition,the adsorption equilibrium data for CO2 at various temperatures was fitted to Langmuir,Freundlich and D-R isotherm models.It was found that the D-R equation was the best model for fitting the adsorption data on Cu/Ce/CAC at different temperatures. |
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| Keywords: | adsorption CO2 capture Cu Ce rare earths |
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