Study on the improvement of the capacity of amine-impregnated commercial activated carbon beds for Co-2 adsorbing

Khalil, S.H. and Aroua, M.K. and Daud, W.M.A.W. (2012) Study on the improvement of the capacity of amine-impregnated commercial activated carbon beds for Co-2 adsorbing. Chemical Engineering Journal, 183. pp. 15-20. ISSN 1385-8947

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Abstract

Amine-based chemicals were impregnated onto activated carbon particles to improve its natural adsorption ability and selectivity to adsorb CO 2 from gas mixture stream. Characterization results achieved by measuring the surface area with ASAP 2020 showed that the amine-based chemicals blocked the mostly micropore pores of the activated carbon particles. The amine-based chemicals used in this study were, monoethanolamine (MEA) and 2-amino-2-methyl-1-propanol (AMP). The impregnation process and the subsequent blockage reduced the surface area of the activated carbon particles significantly but on the other hand enhanced the adsorption capacity and selectivity of the activated carbon for CO 2 adsorption. Elemental analysis results using energy-dispersive X-ray spectroscopy showed that the impregnation process managed to attach the reactive N 2 molecules onto the surface and inside the pores of the activated carbon particles. Images from field emission scanning electron microscope showed that due to impregnation process most of the pores of the activated carbon particles had been blocked by the MEA and AMP molecules. Sweeping exhausted non-impregnated activated carbon beds with 60ml/min pure nitrogen for 4h was enough for these beds to regain their original adsorption capacity but in contrast it was not enough to regenerate exhausted AMP, MEA-impregnated activated carbon beds to regain their original adsorption capability.

Item Type: Article
Additional Information: Export Date: 21 April 2013 Source: Scopus CODEN: CMEJA :doi 10.1016/j.cej.2011.12.011 Language of Original Document: English Correspondence Address: Khalil, S.H.; Chemical Engineering Department, University of Malaya, 50603 Kuala Lumpur, Malaysia; email: saadamen@yahoo.com References: Schobert, H.H., Song, C., (2002) Fuel, 81 (1), p. 15; Maroto-Valer, M.M., Song, C., Soong, Y., (2002) Environmental Challenges and Greenhouse Gas Control for Fossil Fuel Utilization in the 21st Century, , Kluwer Academic/Plenum Publishers, New York; White, C.M., Strazisar, B.R., Granite, E.J., Hoffman, J.S., Pennline, H.W., Separation and capture of CO 2 from large stationary sources and sequestration in geological formations - coalbeds and deep saline aquifers (2003) J. Air Waste Manag. Assoc., 53, pp. 645-715; Aaron, D., Tsouris, C., Separation of CO 2 from flue gas: a review (2005) Sep. Sci. Technol., 40, pp. 321-348; Bai, H.L., Yeh, A.C., Removal of CO 2 greenhouse gas by ammonia scrubbing (1997) Ind. Eng. Chem. Res., 36, pp. 2490-2493; Yeh, A.C., Bai, H.L., Comparison of ammonia and monoethanolamine solvents to reduce CO 2 greenhouse gas emissions (1999) Sci. Total Environ., 228, pp. 121-133; Rao, A.B., Rubin, E.S., A technical, economic, and environmental assessment of amine-based CO 2 capture technology for power plant greenhouse gas control (2002) Environ. Sci. Technol., 36, pp. 4467-4475; Hsu, S.-C., Lu, C., Su, F., Zeng, W., Chen, W., Thermodynamics and regeneration studies of CO 2 adsorption on multiwalled carbon nanotubes (2010) Chem. Eng. Sci., 65, pp. 1354-1361; Xu, X.C., Song, C.S., Andresen, J.M., Miller, B.G., Scaroni, A.W., (2002) Energy Fuels, 16, p. 1463; Siriwardane, R.V., Shen, M.S., Fisher, E.P., Poston, J.A., (2001) Energy Fuels, 15, p. 279; Gray, M.L., Soong, Y., Champagne, K.J., Baltrus, J., Stevens, R.W., Toochinda, P., Chuang, S.S.C., (2004) Sep. Purif. Technol., 35, p. 31; Bansal, R.C., Donnet, J., Stoeckl, F., (1998) Activated Carbon, , Marcel Dekker Inc; Przepiórski, J., Skrodzewicz, M., Morawski, A.W., (2004) Appl. Surf. Sci., 225 (1-4), p. 235; Maroto-valer, M.M., Tang, Z., Zhang, Y., CO 2 capture by activated and impregnated anthracites (2005) Fuel Process. Technol., 86 (14-15 OCTOBER), pp. 1487-1502; Xu, X., Song, C., Andrésen, J.M., Miller, B.G., Scaroni, A.W., Preparation and characterization of novel CO 2 molecular basket adsorbents based on polymer-modified mesoporous molecular sieve MCM-41 (2003) Micropor. Mesopor. Mater., 62 (1-2), pp. 29-45; Brunauer, S., Emmett, P.H., Teller, E., Adsorption of gases in multimolecular layers (1938) J. Am. Chem. Soc., 60 (2), pp. 309-319
Uncontrolled Keywords: Activated carbon; Adsorption; AMP; Impregnation; MEA; 2-amino-2-methyl-1-propanol; Activated carbon beds; Activated carbon particles; Adsorption ability; Adsorption capability; Adsorption capacities; Commercial activated carbons; Energy dispersive x-ray spectroscopy; Field emission scanning electron microscopes; Micropores; Monoethanolamine; Surface area; Carbon dioxide; Chemicals; Energy dispersive spectroscopy; Organic compounds; Scanning electron microscopy.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 16 Jul 2013 02:16
Last Modified: 08 Nov 2017 08:45
URI: http://eprints.um.edu.my/id/eprint/7399

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