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Assessement of Phenanthrene Removal from Hot Gas by Porous Carbons

2000; American Chemical Society; Volume: 15; Issue: 1 Linguagem: Inglês

10.1021/ef000116g

1520-5029

A.M. Mastral, Tomás García, M.S. Callén, M.V. Navarro, Javier Galbán,

Carbon Dioxide Capture Technologies

This is the first time that the adsorption of phenanthrene (Phe) for hot gas emissions cleaning from combustion has been studied. For this goal, the adsorption capacity of 10 active carbons with different origins and a wide range of textural characteristics has been assessed for Phe removal from hot gas emissions. The study was carried out at laboratory scale and the main aim has been to test the Phe adsorption capacities by the porous materials at the ranges that Phe could be emitted from new energy systems generation. The protocol followed in this work was the following: first, to check the influence of the bed mass on the Phe adsorption capacity, and second, once it was shown that the bed mass is not relevant for the studied Phe concentration range, the adsorption capacity of the 10 adsorbents was analyzed. The CA-3 adsorbent was selected to check the inlet concentration at three different temperatures, 125, 150, and 175 °C, within the range of atmospheric emissions from the power stations. The results obtained show that there is a good correlation between the Phe adsorption capacity and the total micropore volume calculated with the Dubinin−Radushkevich equation for the N2 isotherm data. No relationship was found between Phe adsorption capacity and mesopore volume calculated by BJH method. Besides, no relationship was found between chemical surface (CO and CO2 groups desorbed on thermal program desorption (TPD)) and adsorption capacity.