Adsorption of sulfur dioxide onto activated carbons prepared from oil-palm shells impregnated with potassium hydroxide
2000; Wiley; Volume: 75; Issue: 11 Linguagem: Inglês
10.1002/1097-4660(200011)75
ISSN1097-4660
Autores Tópico(s)Catalytic Processes in Materials Science
ResumoJournal of Chemical Technology & BiotechnologyVolume 75, Issue 11 p. 971-976 Research Article Adsorption of sulfur dioxide onto activated carbons prepared from oil-palm shells impregnated with potassium hydroxide Jia Guo, Corresponding Author Jia Guo Division of Thermal and Fluids Engineering, School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798, Republic of SingaporeDivision of Thermal and Fluids Engineering, School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798, Republic of Singapore===Search for more papers by this authorAik Chong Lua, Aik Chong Lua Division of Thermal and Fluids Engineering, School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798, Republic of SingaporeSearch for more papers by this author Jia Guo, Corresponding Author Jia Guo Division of Thermal and Fluids Engineering, School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798, Republic of SingaporeDivision of Thermal and Fluids Engineering, School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798, Republic of Singapore===Search for more papers by this authorAik Chong Lua, Aik Chong Lua Division of Thermal and Fluids Engineering, School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798, Republic of SingaporeSearch for more papers by this author First published: 27 October 2000 https://doi.org/10.1002/1097-4660(200011)75:11 3.0.CO;2-VCitations: 24Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Adsorption of sulfur dioxide (SO2), a gaseous pollutant, onto activated carbons prepared from oil-palm shells pre-treated with potassium hydroxide (KOH) impregnation was studied. Experimental results showed that SO2 concentration and adsorption temperature affected significantly the amount of SO2 adsorbed and the equilibrium time. However, sample particle sizes influenced the equilibrium time (due to effect of diffusion rate) only. Desorption at the same temperature of adsorption and a higher temperature of 200 °C confirmed the presence of chemisorption due to pre-impregnation. Impregnation with different activation agents was found to have limited effect on the inorganic components of the sample. Compared with the activated carbon pre-treated with 30% phosphoric acid (H3PO4) that had larger BET and micropore surface areas, the sample impregnated with 10% KOH had a higher adsorptive capacity for SO2, which was closely related to the surface organic functional groups of the sample. In general, the activated carbon prepared from oil-palm shell impregnated with KOH was more effective for SO2 adsorption and its adsorptive capacity was comparable to some commercial activated carbons. © 2000 Society of Chemical Industry Citing Literature Volume75, Issue11November 2000Pages 971-976 RelatedInformation
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