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336.#.#.3: Artículo de Investigación

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351.#.#.6: http://jart.icat.unam.mx/index.php/jart

351.#.#.b: Journal of Applied Research and Technology

351.#.#.a: Artículos

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270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

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856.4.0.u: http://jart.icat.unam.mx/index.php/jart/article/view/1280/786

100.1.#.a: Pérez, Héctor Ferral; García, Mónica Galicia

524.#.#.a: Pérez, Héctor Ferral, et al. (2020). Bioprecipitation of calcium carbonate by Bacillus subtilis and its potential to self-healing in cement-based materials. Journal of Applied Research and Technology; Vol 18 No 5, 2020. Recuperado de https://repositorio.unam.mx/contenidos/4110261

245.1.0.a: Bioprecipitation of calcium carbonate by Bacillus subtilis and its potential to self-healing in cement-based materials

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Ciencias Aplicadas y Tecnología, UNAM

264.#.0.c: 2020

264.#.1.c: 2020-10-30

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY 4.0 Internacional, https://creativecommons.org/licenses/by/4.0/legalcode.es, fecha de asignación de la licencia 2020-10-30, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistas@unam.mx

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520.3.#.a: In recent years, biological mineralization has been implemented as a viable option for the elaboration of new building materials, protection and repair of concrete by self-healing, soil stabilization, carbon dioxide capture, and drug delivery. Biogenic mineralization of calcium carbonate (CaCO3) induced by bacterial metabolism has been proposed as an effective method. The objective of the present study was to characterize the bioprecipitation of CaCO3 crystals by Bacillus subtilis in a semi-solid system. The results show that CaCO3 crystals were produced by day 3 of incubation. The prevalent crystalline polymorph was calcite, and in a minor proportion, vaterite. The presence of amorphous material was also detected (amorphous CaCO3 (ACC)). Finally, the crystallinity index was 81.1%. This biogenic calcium carbonate does not decrease pH and does not yield chloride formation. Contrary, it increases pH values up to 10, which constitutes and advantage for implementations at reinforced concrete. Novel applications for biogenic calcium carbonate derived from Bacillus subtilis addressing self-healing, biocementation processes, and biorestoration of monuments are presented.  

773.1.#.t: Journal of Applied Research and Technology; Vol 18 No 5 (2020)

773.1.#.o: http://jart.icat.unam.mx/index.php/jart

046.#.#.j: 2021-04-13 00:00:00.000000

022.#.#.a: ISSN electrónico: 2448-6736; ISSN: 1665-6423

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264.#.1.b: Instituto de Ciencias Aplicadas y Tecnología, UNAM

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doi: https://doi.org/10.22201/icat.24486736e.2020.18.5.1280

handle: 00e7c7e0be21eec3

harvesting_date: 2021-03-08 00:00:00.0

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Artículo

Bioprecipitation of calcium carbonate by Bacillus subtilis and its potential to self-healing in cement-based materials

Pérez, Héctor Ferral; García, Mónica Galicia

Instituto de Ciencias Aplicadas y Tecnología, UNAM, publicado en Journal of Applied Research and Technology, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Cita

Pérez, Héctor Ferral, et al. (2020). Bioprecipitation of calcium carbonate by Bacillus subtilis and its potential to self-healing in cement-based materials. Journal of Applied Research and Technology; Vol 18 No 5, 2020. Recuperado de https://repositorio.unam.mx/contenidos/4110261

Descripción del recurso

Autor(es)
Pérez, Héctor Ferral; García, Mónica Galicia
Tipo
Artículo de Investigación
Área del conocimiento
Ingenierías
Título
Bioprecipitation of calcium carbonate by Bacillus subtilis and its potential to self-healing in cement-based materials
Fecha
2020-10-30
Resumen
In recent years, biological mineralization has been implemented as a viable option for the elaboration of new building materials, protection and repair of concrete by self-healing, soil stabilization, carbon dioxide capture, and drug delivery. Biogenic mineralization of calcium carbonate (CaCO3) induced by bacterial metabolism has been proposed as an effective method. The objective of the present study was to characterize the bioprecipitation of CaCO3 crystals by Bacillus subtilis in a semi-solid system. The results show that CaCO3 crystals were produced by day 3 of incubation. The prevalent crystalline polymorph was calcite, and in a minor proportion, vaterite. The presence of amorphous material was also detected (amorphous CaCO3 (ACC)). Finally, the crystallinity index was 81.1%. This biogenic calcium carbonate does not decrease pH and does not yield chloride formation. Contrary, it increases pH values up to 10, which constitutes and advantage for implementations at reinforced concrete. Novel applications for biogenic calcium carbonate derived from Bacillus subtilis addressing self-healing, biocementation processes, and biorestoration of monuments are presented.  
Idioma
eng
ISSN
ISSN electrónico: 2448-6736; ISSN: 1665-6423

Enlaces