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Title

Experimental and Simulation Study of Adsorption in Postcombustion Conditions Using a Microporous Biochar. 2. H2O, CO2, and N2 Adsorption

AuthorsGonzález Plaza, Marta ; Durán Vera, Inés ; Querejeta Montes, Nausika ; Rubiera González, Fernando ; Pevida García, Covadonga
Issue Date31-May-2016
PublisherAmerican Chemical Society
CitationIndustrial & Engineering Chemistry Research 55(24): 6854–6865 (2016)
AbstractThe adsorption behavior of humid mixtures that are representative of postcombustion conditions on a microporous biochar was evaluated. The adsorption isotherms of H2O(v) were measured at 30, 50, and 70 °C up to the saturation pressure and fitted to the extended Cooperative Multimolecular Sorption (CMMS) model. Dynamic experiments were carried out in a fixed-bed adsorption unit with mixtures of N2, CO2, and H2O(v). Experimental results indicate that H2O is little affected by CO2 adsorption. On the other hand, the CO2 adsorption capacity can be reduced by the adsorption of H2O. The extent of this reduction is dependent on the amount of H2O adsorbed, which, in turn, is strongly dependent on the relative humidity of the gas phase and the adsorption time. A dynamic fixed-bed adsorption model that makes use of Ideal Adsorbed Solution (IAS) theory has been shown to be adequate to describe the adsorption behavior of CO2 from the ternary mixtures in the full range of conditions evaluated.
Publisher version (URL)http://dx.doi.org/10.1021/acs.iecr.6b01720
URIhttp://hdl.handle.net/10261/134110
DOI10.1021/acs.iecr.6b01720
ISSN0888-5885
Appears in Collections:(INCAR) Artículos
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