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Received June 27, 2015
Accepted November 8, 2015
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Experimental investigation of CO2 capture using sodium hydroxide particles in a fluidized bed

School of Chemical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
aghaemi@iust.ac.ir
Korean Journal of Chemical Engineering, April 2016, 33(4), 1278-1285(8), 10.1007/s11814-015-0237-1
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Abstract

CO2 capture from air using sodium hydroxide solid sorbent in a laboratory scale fluidized bed reactor was investigated experimentally. The influence of three parameters of temperature, inlet CO2 volume percentage and inlet air flow rate on the CO2 removal rate was studied. Experimental results showed that the optimum rate was at 25 ℃ when the inlet CO2 volume percentage was 1%. The results also showed that the adsorption process was reactive, and the reaction mechanism depended on the reaction temperature. In addition, empirical observation revealed only one adsorption cycle happened at low temperatures (25-30 ℃). As the temperature increased, the second adsorption cycle occurred and, finally, CO2 desorption cycle took place in the range of 90-115 ℃.

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