{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,14]],"date-time":"2026-04-14T17:19:25Z","timestamp":1776187165262,"version":"3.50.1"},"reference-count":61,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2021,8,5]],"date-time":"2021-08-05T00:00:00Z","timestamp":1628121600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["Research Projects UIDP\/00100\/2020 and UIDB\/00100\/2020, Carbon Emissions Reduction in the Cement Industry (PTDC\/AAG-MAA\/6195\/2014) and Solar-driven Ca-Looping Process for Thermochemical Energy Storage (PTDC\/EAM-PEC\/32342\/2017)."],"award-info":[{"award-number":["Research Projects UIDP\/00100\/2020 and UIDB\/00100\/2020, Carbon Emissions Reduction in the Cement Industry (PTDC\/AAG-MAA\/6195\/2014) and Solar-driven Ca-Looping Process for Thermochemical Energy Storage (PTDC\/EAM-PEC\/32342\/2017)."]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>The use of wastes of marble powder (WMP) and dolomite as sorbents for CO2 capture is extremely promising to make the Ca-looping (CaL) process a more sustainable and eco-friendly technology. For the downstream utilization of CO2, it is more realistic to produce a concentrated CO2 stream in the calcination step of the CaL process, so more severe conditions are required in the calciner, such as an atmosphere with high concentration of CO2 (&gt;70%), which implies higher calcination temperatures (&gt;900 \u00b0C). In this work, experimental CaL tests were carried out in a fixed bed reactor using natural CaO-based sorbent precursors, such as WMP, dolomite and their blend, under mild (800 \u00b0C, N2) and realistic (930 \u00b0C, 80% CO2) calcination conditions, and the sorbents CO2 carrying capacity along the cycles was compared. A blend of WMP with dolomite was tested as an approach to improve the CO2 carrying capacity of WMP. As regards the realistic calcination under high CO2 concentration at high temperature, there is a strong synergetic effect of inert MgO grains of calcined dolomite in the blended WMP + dolomite sorbent that leads to an improved stability along the cycles when compared with WMP used separately. Hence, it is a promising approach to tailor cheap waste-based blended sorbents with improved carrying capacity and stability along the cycles under realistic calcination conditions.<\/jats:p>","DOI":"10.3390\/ma14164379","type":"journal-article","created":{"date-parts":[[2021,8,5]],"date-time":"2021-08-05T09:35:32Z","timestamp":1628156132000},"page":"4379","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Blending Wastes of Marble Powder and Dolomite Sorbents for Calcium-Looping CO2 Capture under Realistic Industrial Calcination Conditions"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6137-6664","authenticated-orcid":false,"given":"Paula","family":"Teixeira","sequence":"first","affiliation":[{"name":"CQE\u2014Centro de Qu\u00edmica Estrutural, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal"}]},{"given":"Auguste","family":"Fernandes","sequence":"additional","affiliation":[{"name":"CQE\u2014Centro de Qu\u00edmica Estrutural, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9538-821X","authenticated-orcid":false,"given":"Filipa","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"CQE\u2014Centro de Qu\u00edmica Estrutural, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2568-3974","authenticated-orcid":false,"given":"Carla I. C.","family":"Pinheiro","sequence":"additional","affiliation":[{"name":"CQE\u2014Centro de Qu\u00edmica Estrutural, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2021,8,5]]},"reference":[{"key":"ref_1","unstructured":"UNFCCC (2021, April 23). Conference of the Parties (COP) Paris Climate Change Conference-November 2015, COP 21. Available online: http:\/\/unfccc.int\/resource\/docs\/2015\/cop21\/eng\/l09r01.pdf."},{"key":"ref_2","unstructured":"(2021, April 23). Global CCS Institute, Global Status of CCS, 2019, Australia. Available online: https:\/\/www.globalccsinstitute.com\/resources\/global-status-report\/."},{"key":"ref_3","first-page":"1","article-title":"Progress in the development and application of CaO-based adsorbents for CO2 capture\u2014A review","volume":"1\u20132","author":"Wu","year":"2018","journal-title":"Mater. Today Sustain."},{"key":"ref_4","unstructured":"WBCSD (2009). Cement Technology Roadmap 2009: Carbon Emissions Reductions up to 2050, IEA."},{"key":"ref_5","unstructured":"(2018). 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