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Enrichment, characterization, and sand consolidation application of urease active calcite-producing bacteria

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Abstract

Minerals such as calcium carbonate, which is prevalent in marble and limestone, are present naturally in rocks. Both physicochemical processes and microbial processes can result in the creation of calcium carbonate in nature, as is well documented. In this study, microbiologically induced calcite precipitation potential of three different Travertine-type water sources (Pamukkale Travertine Spring (PTS), Pamukkale Travertine Terraces (PTT), and Red Travertine of Karahayit (RTK)) using three different incubation media (NB, NB3, and ATCC1832) were investigated. After enrichment with ATCC1832 media, urease assays were positive for all of the microbial sources. The PTS and PTT were cultured with ATCC1832 medium for 48 h, which showed the best results for urease activity and microbial growth among other samples. Metagenome analyses indicated that PTT enriched with ATCC1832 media contains > 99% Firmicutes, while PTS enriched with ATCC1832 contains > 99% Proteobacteria at the Phylum level. Results from SEM–EDX and XRD analysis revealed that calcite and/or vaterite were the minerals that emerged from the mineralization of the PTS and PTT during incubation. The type of calcium carbonate crystals tended to change from one form to another when the incubation period extends from 72 to 120 h. Both the PTS and the PTT were able to precipitate calcite within the sand column. However, the bacteria from the PTT (26% CaCO3) outperformed those from the PTS (18% CaCO3) in terms of calcium carbonate deposition on the 21st day of incubation.

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Data Availability

The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

We would like to thank the Republic of Türkiye Ministry of Agriculture and Forestry, General Directorate of Nature Conservation and National Parks, for the legal permission to collect the samples. We thank Dr. Res. Assist. Yağmur Meltem Aydın Kızılkaya for their support in sample collection.

Funding

This work has been supported by Yildiz Technical University Scientific Research Projects Coordination Unit under project number YTÜ BAP FBA-2021–4517.

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Elvan Burcu Kosma: investigation, resources, methodology, validation, writing—original draft, visualization. Neslihan Manav-Demir: funding acquisition, resources, project administration, writing—review & editing. Hülya Civelek-Yörüklü: resources, methodology. Bestami Özkaya: conceptualization, supervision. All authors read and approved the final manuscript.

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Correspondence to Elvan Burcu Kosma.

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Kosma, E.B., Manav-Demir, N., Civelek-Yoruklu, H. et al. Enrichment, characterization, and sand consolidation application of urease active calcite-producing bacteria. Environ Sci Pollut Res 31, 2466–2480 (2024). https://doi.org/10.1007/s11356-023-31332-8

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  • DOI: https://doi.org/10.1007/s11356-023-31332-8

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