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Accelerated mineral bio-carbonation of coarse residue kimberlite material by inoculation with photosynthetic microbial mats
Microbiological weathering of coarse residue deposit (CRD) kimberlite produced by the Venetia Diamond Mine, Limpopo, South Africa enhanced mineral carbonation relative to untreated material. Cultures of photosynthetically enriched biofilm produced maximal carbonation conditions when mixed with kimbe...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10276481/ https://www.ncbi.nlm.nih.gov/pubmed/37326927 http://dx.doi.org/10.1186/s12932-023-00082-4 |
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author | Jones, Thomas Ray Poitras, Jordan Gagen, Emma Paterson, David John Southam, Gordon |
author_facet | Jones, Thomas Ray Poitras, Jordan Gagen, Emma Paterson, David John Southam, Gordon |
author_sort | Jones, Thomas Ray |
collection | PubMed |
description | Microbiological weathering of coarse residue deposit (CRD) kimberlite produced by the Venetia Diamond Mine, Limpopo, South Africa enhanced mineral carbonation relative to untreated material. Cultures of photosynthetically enriched biofilm produced maximal carbonation conditions when mixed with kimberlite and incubated under near surface conditions. Interestingly, mineral carbonation also occurred in the dark, under water-saturated conditions. The examination of mineralized biofilms in ca. 150 µm-thick-sections using light microscopy, X-ray fluorescence microscopy (XFM) and backscatter electron—scanning electron microscopy-energy dispersive x-ray spectrometry demonstrated that microbiological weathering aided in producing secondary calcium/magnesium carbonates on silicate grain boundaries. Calcium/magnesium sulphate(s) precipitated under vadose conditions demonstrating that evaporites formed upon drying. In this system, mineral carbonation was only observed in regions possessing bacteria, preserved within carbonate as cemented microcolonies. 16S rDNA molecular diversity of bacteria in kimberlite and in natural biofilms growing on kimberlite were dominated by Proteobacteria that are active in nitrogen, phosphorus and sulphur cycling. Cyanobacteria based enrichment cultures provided with nitrogen & phosphorus (nutrients) to enhance growth, possessed increased diversity of bacteria, with Proteobacteria re-establishing themselves as the dominant bacterial lineage when incubated under dark, vadose conditions consistent with natural kimberlite. Overall, 16S rDNA analyses revealed that weathered kimberlite hosts a diverse microbiome consistent with soils, metal cycling and hydrocarbon degradation. Enhanced weathering and carbonate-cemented microcolonies demonstrate that microorganisms are key to mineral carbonation of kimberlite. |
format | Online Article Text |
id | pubmed-10276481 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Springer International Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-102764812023-06-18 Accelerated mineral bio-carbonation of coarse residue kimberlite material by inoculation with photosynthetic microbial mats Jones, Thomas Ray Poitras, Jordan Gagen, Emma Paterson, David John Southam, Gordon Geochem Trans Research Microbiological weathering of coarse residue deposit (CRD) kimberlite produced by the Venetia Diamond Mine, Limpopo, South Africa enhanced mineral carbonation relative to untreated material. Cultures of photosynthetically enriched biofilm produced maximal carbonation conditions when mixed with kimberlite and incubated under near surface conditions. Interestingly, mineral carbonation also occurred in the dark, under water-saturated conditions. The examination of mineralized biofilms in ca. 150 µm-thick-sections using light microscopy, X-ray fluorescence microscopy (XFM) and backscatter electron—scanning electron microscopy-energy dispersive x-ray spectrometry demonstrated that microbiological weathering aided in producing secondary calcium/magnesium carbonates on silicate grain boundaries. Calcium/magnesium sulphate(s) precipitated under vadose conditions demonstrating that evaporites formed upon drying. In this system, mineral carbonation was only observed in regions possessing bacteria, preserved within carbonate as cemented microcolonies. 16S rDNA molecular diversity of bacteria in kimberlite and in natural biofilms growing on kimberlite were dominated by Proteobacteria that are active in nitrogen, phosphorus and sulphur cycling. Cyanobacteria based enrichment cultures provided with nitrogen & phosphorus (nutrients) to enhance growth, possessed increased diversity of bacteria, with Proteobacteria re-establishing themselves as the dominant bacterial lineage when incubated under dark, vadose conditions consistent with natural kimberlite. Overall, 16S rDNA analyses revealed that weathered kimberlite hosts a diverse microbiome consistent with soils, metal cycling and hydrocarbon degradation. Enhanced weathering and carbonate-cemented microcolonies demonstrate that microorganisms are key to mineral carbonation of kimberlite. Springer International Publishing 2023-06-16 /pmc/articles/PMC10276481/ /pubmed/37326927 http://dx.doi.org/10.1186/s12932-023-00082-4 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/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
spellingShingle | Research Jones, Thomas Ray Poitras, Jordan Gagen, Emma Paterson, David John Southam, Gordon Accelerated mineral bio-carbonation of coarse residue kimberlite material by inoculation with photosynthetic microbial mats |
title | Accelerated mineral bio-carbonation of coarse residue kimberlite material by inoculation with photosynthetic microbial mats |
title_full | Accelerated mineral bio-carbonation of coarse residue kimberlite material by inoculation with photosynthetic microbial mats |
title_fullStr | Accelerated mineral bio-carbonation of coarse residue kimberlite material by inoculation with photosynthetic microbial mats |
title_full_unstemmed | Accelerated mineral bio-carbonation of coarse residue kimberlite material by inoculation with photosynthetic microbial mats |
title_short | Accelerated mineral bio-carbonation of coarse residue kimberlite material by inoculation with photosynthetic microbial mats |
title_sort | accelerated mineral bio-carbonation of coarse residue kimberlite material by inoculation with photosynthetic microbial mats |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10276481/ https://www.ncbi.nlm.nih.gov/pubmed/37326927 http://dx.doi.org/10.1186/s12932-023-00082-4 |
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