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Experimental and Simulation Study of Adsorption in Postcombustion Conditions Using a Microporous Biochar. 1. CO2 and N2 Adsorption

AuthorsGonzález Plaza, Marta ; Durán Vera, Inés ; Querejeta Montes, Nausika ; Rubiera González, Fernando ; Pevida García, Covadonga
Issue Date25-Feb-2016
PublisherAmerican Chemical Society
CitationIndustrial & Engineering Chemistry Research 55(11): 3097-3112 (2016)
AbstractThe influence of N2 on CO2 adsorption was evaluated using a microporous biochar with a narrow pore size distribution. The adsorption isotherms of pure CO2 and N2 were measured at 0, 30, 50, and 70 °C up to 120 kPa and fitted to the Toth adsorption model. Dynamic breakthrough experiments were carried out in a fixed-bed adsorption unit using binary mixtures with compositions representative of different postcombustion streams (8–30% CO2) from ambient temperature to 70 °C. Dynamic adsorption experiments were simulated to validate the mathematical model of the adsorption process, as a necessary step for its later use for process design. The Ideal Adsorption Solution (IAS) theory, based on the pure component adsorption models, was used to account for competitive adsorption with satisfactory results. The information gathered in the present work will be used to extend the validity of the model to the adsorption of postcombustion streams containing H2O in part 2.
Publisher version (URL)http://dx.doi.org/10.1021/acs.iecr.5b04856
Appears in Collections:(INCAR) Artículos
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