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Calcium carbonate bioprecipitation mediated by ureolytic bacteria grown in pelletized organic manure medium

Omoregie, AI, Muda, K, Bakri, MKB, Rahman, MR, Yusof, FAM and Ojuri, OO (2022) Calcium carbonate bioprecipitation mediated by ureolytic bacteria grown in pelletized organic manure medium. Biomass Conversion and Biorefinery. ISSN 2190-6815

Omoregie_ _ _ Ojuri_et al 2022_LJMU repository.pdf - Accepted Version

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New sustainable methods utilizing biological processes to mediate the improvement of soil properties have recently emerged. Microbially induced calcite precipitation (MICP) has been demonstrated as a potential sustainable technique for soil improvement and solidification, erosion control and prevention, and remediation of contaminants. This paper describes experiments conducted to demonstrate the efficacy of using pelletized organic manure (POM), supplemented with varying concentrations of yeast extract (20 to 80%, w/v) as a suitable alternative low-cost nutrient source for bacteria cultivation during the MICP soil biocementation process. The evaluation entails using scanning electron microscopy with electron-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis analysis for cementation efficiency, relative merits of the mechanisms, and biocementation byproduct. The results demonstrated that ureolytic bacteria can be cultivated with POM containing yeast extract (4 to 8 g/L), and this alternative bacteria cultivation nutrient source produced more crystal formations with less visible pore spaces in biocemented soil. This study reveals that more treatment cycle (bacterial cultures and chemical solution) approaches would be required during biocementation to achieve successful crystal shapes to bridge soil particles when using ureolytic bacteria grown in the inexpensive medium supplemented with low yeast extract.

Item Type: Article
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Divisions: Civil Engineering & Built Environment
Publisher: Springer Science and Business Media LLC
SWORD Depositor: A Symplectic
Date Deposited: 16 Sep 2022 10:32
Last Modified: 01 Sep 2023 00:50
DOI or ID number: 10.1007/s13399-022-03239-w
URI: https://researchonline.ljmu.ac.uk/id/eprint/17595
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