20.500.12556/DiRROS-16788 Methodology for evaluating the CO2 sequestration capacity of waste ashes The concentration of CO2 in the atmosphere is constantly increasing, leading to an increase in the average global temperature and, thus, affecting climate change. Hence, various initiatives have been proposed to mitigate this process, among which CO2 sequestration is a technically simple and efficient approach. The spontaneous carbonation of ashes with atmospheric CO2 is very slow, and this is why accelerated carbonation is encouraged. However, not all ashes are equally suitable for this process, so a methodology to evaluate their potential should be developed. Such a methodology involves a combination of techniques, from theoretical calculations to XRF, XRD, DTA-TG, and the calcimetric determination of the CaCO3 content. The present study followed the approach of exposing ashes to accelerated carbonation conditions (4% v/v CO2, 50–55% and 80–85% RH, 20 ◦C) in a closed carbonation chamber for different periods of time until the maximum CO2 uptake is reached. The amount of sequestered CO2 was quantified by thermogravimetry. The results show that the highest CO2 sequestration capacity (33.8%) and carbonation efficiency (67.9%) were obtained for wood biomass bottom ash. This method was applied to eight combustion ashes and could serve to evaluate other ashes or comparable carbon storage materials. CO2 sequestration carbonation efficiency coal ash wood biomass ash co-combustion ash DTA-TG analysis sekvestracija CO2 učinkovitost karbonatizacije pepel iz premoga pepel iz lesne biomase pepel iz sosežiga DTA-TG analiza true false true Methodology for evaluating the CO2 sequestration capacity of waste ashes Angleški jezik Slovenski jezik © 2023 by the authors. Licensee MDPI, Basel, Switzerland. Neznano 2023-08-08 08:12:34 2023-08-08 09:26:24 2023-08-09 03:34:53 0000-00-00 00:00:00 2023 0 0 Nasl. z nasl. zaslona; Opis vira z dne 28. 7. 2023; str. 1-15 iss. 15, [article no.] 5284 Vol. 16 Jul. 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-07-27 54 1996-1944 10.3390/ma16155284 159989251 https://www.mdpi.com/1996-1944/16/15/5284 1 91f8a330-35a1-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22825 RAZ_Tominc_Sara_2023.pdf RAZ_Tominc_Sara_2023.pdf 1 C666CA872924C0F3BC455FDA40F84120 1bfbe9bfcc12fae2e6ecea3dc7b65929e9f2def7f68e01660ea42405e97f8643 defbbd6b-35ab-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22827 Zavod za gradbeništvo Slovenije Dataset for the article Methodology for evaluating the CO2 sequestration capacity of waste ashes 0 0 0