Preparation of gypsum with high purity and whiteness from phosphogypsum for CO(2) mineral sequestration

Phosphogypsum (PG) is a solid waste product generated during wet-process phosphoric acid production. Various impurities considerably reduce the purity, whiteness, and application range of PG. This article analyzes the physical properties of PG in detail and systematically examines the content and di...

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Detalles Bibliográficos
Autores principales: Zhang, Man, Fan, Xing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10011531/
https://www.ncbi.nlm.nih.gov/pubmed/36914695
http://dx.doi.org/10.1038/s41598-023-28251-6
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author Zhang, Man
Fan, Xing
author_facet Zhang, Man
Fan, Xing
author_sort Zhang, Man
collection PubMed
description Phosphogypsum (PG) is a solid waste product generated during wet-process phosphoric acid production. Various impurities considerably reduce the purity, whiteness, and application range of PG. This article analyzes the physical properties of PG in detail and systematically examines the content and distribution of impurities. Based on the obtained results, a simple process for the efficient removal of almost all impurities in the PG is proposed. The purity and whiteness of the purified gypsum (CaSO(4)) significantly increased to 99% and 92%, respectively. The migration of impurities and the material balance of this process were then analyzed. Most importantly, the purified gypsum showed high CO(2) sequestration efficiency for CO(2) mineral sequestration, through which a high value-added CaCO(3) product was obtained.
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spelling pubmed-100115312023-03-15 Preparation of gypsum with high purity and whiteness from phosphogypsum for CO(2) mineral sequestration Zhang, Man Fan, Xing Sci Rep Article Phosphogypsum (PG) is a solid waste product generated during wet-process phosphoric acid production. Various impurities considerably reduce the purity, whiteness, and application range of PG. This article analyzes the physical properties of PG in detail and systematically examines the content and distribution of impurities. Based on the obtained results, a simple process for the efficient removal of almost all impurities in the PG is proposed. The purity and whiteness of the purified gypsum (CaSO(4)) significantly increased to 99% and 92%, respectively. The migration of impurities and the material balance of this process were then analyzed. Most importantly, the purified gypsum showed high CO(2) sequestration efficiency for CO(2) mineral sequestration, through which a high value-added CaCO(3) product was obtained. Nature Publishing Group UK 2023-03-13 /pmc/articles/PMC10011531/ /pubmed/36914695 http://dx.doi.org/10.1038/s41598-023-28251-6 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Zhang, Man
Fan, Xing
Preparation of gypsum with high purity and whiteness from phosphogypsum for CO(2) mineral sequestration
title Preparation of gypsum with high purity and whiteness from phosphogypsum for CO(2) mineral sequestration
title_full Preparation of gypsum with high purity and whiteness from phosphogypsum for CO(2) mineral sequestration
title_fullStr Preparation of gypsum with high purity and whiteness from phosphogypsum for CO(2) mineral sequestration
title_full_unstemmed Preparation of gypsum with high purity and whiteness from phosphogypsum for CO(2) mineral sequestration
title_short Preparation of gypsum with high purity and whiteness from phosphogypsum for CO(2) mineral sequestration
title_sort preparation of gypsum with high purity and whiteness from phosphogypsum for co(2) mineral sequestration
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10011531/
https://www.ncbi.nlm.nih.gov/pubmed/36914695
http://dx.doi.org/10.1038/s41598-023-28251-6
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