{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:47:34Z","timestamp":1760143654152,"version":"build-2065373602"},"reference-count":33,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2024,2,20]],"date-time":"2024-02-20T00:00:00Z","timestamp":1708387200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"FCT","doi-asserted-by":"publisher","award":["UIDB\/00100\/2020","UIDP\/00100\/2020","PD\/BD\/133309\/2017","PTDC\/EAM-PEC\/32342\/201","LA\/P\/0056\/2020"],"award-info":[{"award-number":["UIDB\/00100\/2020","UIDP\/00100\/2020","PD\/BD\/133309\/2017","PTDC\/EAM-PEC\/32342\/201","LA\/P\/0056\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Processes"],"abstract":"<jats:p>The potential of the supercritical antisolvent micronization (SAS) technique was evaluated for the production of CaO-based particles with a size and a physical structure that could enable high performance for CO2 capture through the calcium looping process. Two sources of calcium derivative compounds were tested, waste marble powder (WMP) and dolomite. The SAS micronization of the derivate calcium acetate was carried out at 60 \u00b0C, 200 bar, a 0.5 mL min\u22121 flow rate of liquid solution, and 20 mg mL\u22121 concentration of solute, producing, with a yield of more than 70%, needle-like particles. Moreover, since dolomite presents with a mixture of calcium and magnesium carbonates, the influence of the magnesium fraction in the SAS micronization was also assessed. The micronized mixtures with lower magnesium content (higher calcium fraction) presented needle-like particles similar to WMP. On the other hand, for the higher magnesium fractions, the micronized material was similar to magnesium acetate micronization, presenting sphere-like particles. The use of the micronized material in the Ca-looping processes, considering 10 carbonation-calcination cycles under mild and realistic conditions, showed that under mild conditions, the micronized WMP improved CaO conversion. After 10 cycles the micronization, WMP presented a conversion 1.8 times greater than the unprocessed material. The micronized dolomite, under both mild and real conditions, maintained more stable conversion after 10 cycles.<\/jats:p>","DOI":"10.3390\/pr12030425","type":"journal-article","created":{"date-parts":[[2024,2,20]],"date-time":"2024-02-20T04:36:22Z","timestamp":1708403782000},"page":"425","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["The Treatment of Natural Calcium Materials Using the Supercritical Antisolvent Method for CO2 Capture Applications"],"prefix":"10.3390","volume":"12","author":[{"given":"Lu\u00eds C. S.","family":"Nobre","sequence":"first","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural, Institute of Molecular Sciences, Departamento de Qu\u00edmica e Bioqu\u00edmica, Faculdade de Ci\u00eancias, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6137-6664","authenticated-orcid":false,"given":"Paula","family":"Teixeira","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Qu\u00edmica, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 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":"Centro de Qu\u00edmica Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Qu\u00edmica, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]},{"given":"Ant\u00f3nio M. F.","family":"Palavra","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Qu\u00edmica, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2094-4781","authenticated-orcid":false,"given":"M\u00e1rio J. F.","family":"Calvete","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica de Coimbra, Institute of Molecular Sciences, Departamento de Qu\u00edmica, Universidade de Coimbra, 3004-535 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9011-5132","authenticated-orcid":false,"given":"Carlos A.","family":"Nieto de Castro","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural, Institute of Molecular Sciences, Departamento de Qu\u00edmica e Bioqu\u00edmica, Faculdade de Ci\u00eancias, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal"}]},{"given":"Beatriz P.","family":"Nobre","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Qu\u00edmica, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2024,2,20]]},"reference":[{"key":"ref_1","unstructured":"Brundtland Commission (1987). World Commission on Environment and Development, Elsevier."},{"key":"ref_2","unstructured":"United Nations (2021, November 22). Transforming Our World: The 2030 Agenda for Sustainable Development. Available online: https:\/\/sdgs.un.org\/2030agenda."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"105030","DOI":"10.1007\/s11356-023-29511-8","article-title":"A Critical Review on Sustainable Hazardous Waste Management Strategies: A Step towards a Circular Economy","volume":"30","author":"Kumar","year":"2023","journal-title":"Environ. Sci. Pollut. 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