Biocementation mediated by native microbes from Brahmaputra riverbank for mitigation of soil erodibility

Abstract Riverbank erosion is a global problem with significant socio-economic impacts. Microbially induced calcite precipitation (MICP) has recently emerged as a promising technology for improving the mechanical properties of soils. The present study investigates the potential of selectively enrich...

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Autores principales:	Anant Aishwarya Dubey, K. Ravi, Abhijit Mukherjee, Lingaraj Sahoo, Moses Akindele Abiala, Navdeep K. Dhami
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7e0ba39357c2435e8e341c5afe1a368a
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spelling	oai:doaj.org-article:7e0ba39357c2435e8e341c5afe1a368a2021-12-02T16:31:02ZBiocementation mediated by native microbes from Brahmaputra riverbank for mitigation of soil erodibility10.1038/s41598-021-94614-62045-2322https://doaj.org/article/7e0ba39357c2435e8e341c5afe1a368a2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94614-6https://doaj.org/toc/2045-2322Abstract Riverbank erosion is a global problem with significant socio-economic impacts. Microbially induced calcite precipitation (MICP) has recently emerged as a promising technology for improving the mechanical properties of soils. The present study investigates the potential of selectively enriched native calcifying bacterial community and its supplementation into the riverbank soil of the Brahmaputra river for reducing the erodibility of the soil. The ureolytic and calcium carbonate cementation abilities of the enriched cultures were investigated with reference to the standard calcifying culture of Sporosarcina pasteurii (ATCC 11859). 16S rRNA analysis revealed Firmicutes to be the most predominant calcifying class with Sporosarcina pasteurii and Pseudogracilibacillus auburnensis as the prevalent strains. The morphological and mineralogical characterization of carbonate crystals confirmed the calcite precipitation potential of these communities. The erodibility of soil treated with native calcifying communities was examined via needle penetration and lab-scale hydraulic flume test. We found a substantial reduction in soil erosion in the biocemented sample with a calcite content of 7.3% and needle penetration index of 16 N/mm. We report the cementation potential of biostimulated ureolytic cultures for minimum intervention to riparian biodiversity for an environmentally conscious alternative to current erosion mitigation practices.Anant Aishwarya DubeyK. RaviAbhijit MukherjeeLingaraj SahooMoses Akindele AbialaNavdeep K. DhamiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anant Aishwarya Dubey K. Ravi Abhijit Mukherjee Lingaraj Sahoo Moses Akindele Abiala Navdeep K. Dhami Biocementation mediated by native microbes from Brahmaputra riverbank for mitigation of soil erodibility
description	Abstract Riverbank erosion is a global problem with significant socio-economic impacts. Microbially induced calcite precipitation (MICP) has recently emerged as a promising technology for improving the mechanical properties of soils. The present study investigates the potential of selectively enriched native calcifying bacterial community and its supplementation into the riverbank soil of the Brahmaputra river for reducing the erodibility of the soil. The ureolytic and calcium carbonate cementation abilities of the enriched cultures were investigated with reference to the standard calcifying culture of Sporosarcina pasteurii (ATCC 11859). 16S rRNA analysis revealed Firmicutes to be the most predominant calcifying class with Sporosarcina pasteurii and Pseudogracilibacillus auburnensis as the prevalent strains. The morphological and mineralogical characterization of carbonate crystals confirmed the calcite precipitation potential of these communities. The erodibility of soil treated with native calcifying communities was examined via needle penetration and lab-scale hydraulic flume test. We found a substantial reduction in soil erosion in the biocemented sample with a calcite content of 7.3% and needle penetration index of 16 N/mm. We report the cementation potential of biostimulated ureolytic cultures for minimum intervention to riparian biodiversity for an environmentally conscious alternative to current erosion mitigation practices.
format	article
author	Anant Aishwarya Dubey K. Ravi Abhijit Mukherjee Lingaraj Sahoo Moses Akindele Abiala Navdeep K. Dhami
author_facet	Anant Aishwarya Dubey K. Ravi Abhijit Mukherjee Lingaraj Sahoo Moses Akindele Abiala Navdeep K. Dhami
author_sort	Anant Aishwarya Dubey
title	Biocementation mediated by native microbes from Brahmaputra riverbank for mitigation of soil erodibility
title_short	Biocementation mediated by native microbes from Brahmaputra riverbank for mitigation of soil erodibility
title_full	Biocementation mediated by native microbes from Brahmaputra riverbank for mitigation of soil erodibility
title_fullStr	Biocementation mediated by native microbes from Brahmaputra riverbank for mitigation of soil erodibility
title_full_unstemmed	Biocementation mediated by native microbes from Brahmaputra riverbank for mitigation of soil erodibility
title_sort	biocementation mediated by native microbes from brahmaputra riverbank for mitigation of soil erodibility
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7e0ba39357c2435e8e341c5afe1a368a
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Biocementation mediated by native microbes from Brahmaputra riverbank for mitigation of soil erodibility

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