Transformation of siderite to goethite by humic acid in the natural environment

Humic acid (HA) is particularly important in iron-bearing mineral transformations and erosion at the water-mineral boundary zone of the Earth. In this study, three stages of the possible pathway by which HA causes mineral transformation from siderite to goethite are identified. Firstly, a Fe(II)-HA...

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Autores principales: Xing, Bobo, Graham, Nigel, Yu, Wenzheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9814924/
https://www.ncbi.nlm.nih.gov/pubmed/36703449
http://dx.doi.org/10.1038/s42004-020-0284-3
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author Xing, Bobo
Graham, Nigel
Yu, Wenzheng
author_facet Xing, Bobo
Graham, Nigel
Yu, Wenzheng
author_sort Xing, Bobo
collection PubMed
description Humic acid (HA) is particularly important in iron-bearing mineral transformations and erosion at the water-mineral boundary zone of the Earth. In this study, three stages of the possible pathway by which HA causes mineral transformation from siderite to goethite are identified. Firstly, a Fe(II)-HA complex is formed by chelation, which accelerates the dissolution and oxidation of Fe(II) from the surface of siderite. As the Fe(II)-HA complex retains Fe atoms in close proximity of each other, ferrihydrite is formed by the agglomeration and crystallization. Finally, the ferrihydrite structurally rearranges upon attachment to the surface of goethite crystals and merges with its structure. The influence of low concentrations of HA (0–2 mg/L) on phosphate adsorption is found to be beneficial by the inducing of new mineral phases. We believe that these results provide a greater understanding of the impact of HA in the biogeochemical cycle of phosphate, mineral transformation.
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spelling pubmed-98149242023-01-10 Transformation of siderite to goethite by humic acid in the natural environment Xing, Bobo Graham, Nigel Yu, Wenzheng Commun Chem Article Humic acid (HA) is particularly important in iron-bearing mineral transformations and erosion at the water-mineral boundary zone of the Earth. In this study, three stages of the possible pathway by which HA causes mineral transformation from siderite to goethite are identified. Firstly, a Fe(II)-HA complex is formed by chelation, which accelerates the dissolution and oxidation of Fe(II) from the surface of siderite. As the Fe(II)-HA complex retains Fe atoms in close proximity of each other, ferrihydrite is formed by the agglomeration and crystallization. Finally, the ferrihydrite structurally rearranges upon attachment to the surface of goethite crystals and merges with its structure. The influence of low concentrations of HA (0–2 mg/L) on phosphate adsorption is found to be beneficial by the inducing of new mineral phases. We believe that these results provide a greater understanding of the impact of HA in the biogeochemical cycle of phosphate, mineral transformation. Nature Publishing Group UK 2020-03-25 /pmc/articles/PMC9814924/ /pubmed/36703449 http://dx.doi.org/10.1038/s42004-020-0284-3 Text en © The Author(s) 2020 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Xing, Bobo
Graham, Nigel
Yu, Wenzheng
Transformation of siderite to goethite by humic acid in the natural environment
title Transformation of siderite to goethite by humic acid in the natural environment
title_full Transformation of siderite to goethite by humic acid in the natural environment
title_fullStr Transformation of siderite to goethite by humic acid in the natural environment
title_full_unstemmed Transformation of siderite to goethite by humic acid in the natural environment
title_short Transformation of siderite to goethite by humic acid in the natural environment
title_sort transformation of siderite to goethite by humic acid in the natural environment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9814924/
https://www.ncbi.nlm.nih.gov/pubmed/36703449
http://dx.doi.org/10.1038/s42004-020-0284-3
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