Projects per year
Microbially induced carbonate precipitation (MICP) is a promising technique that could be used for soil stabilization, for permeability control in porous and fractured media, for sealing leaky hydrocarbon wells, and for immobilizing contaminants. Many further field trials are required before optimum treatment strategies can be established. These field trials will be costly and time consuming to \carry out and are currently a barrier to transitioning MICP from a lab-scale process to a practical field-scale deployable technology. To narrow down the range of potential treatment options into a manageable number, we present a field-scale reactive transport model of MICP that captures the key processes of bacteria transport and attachment, urea hydrolysis, tractable CaCO 3 precipitation, and modification to the porous media in terms of porosity and permeability. The model, named biogroutFoam, is implemented in OpenFOAM, and results are presented for MICP treatment in a planar fracture, three-dimensional sand media at pore scale, and at continuum scale for an array of nine injection/abstraction wells. Results indicate that it is necessary to model bacterial attachment, that bacterial attachment should be a function of fluid velocity, and that phased injection strategies may lead to the most uniform precipitation in a porous media.
- MICP modelling
- micro-continuum modelling
- MICP treatment injection modelling
- ground improvement
- Sporosarcina pasteurii
- bacterial attachment
1/11/17 → 31/10/22
Project: Research Fellowship
1/12/14 → 30/11/16
Minto, J. M., El Mountassir, G. & Lunn, R. J., 25 Jun 2019, E3S Web of Conferences: 7th International Symposium on Deformation Characteristics of Geomaterials (IS-Glasgow 2019) . Tarantino, A. & Ibraim, E. (eds.). [Bloomsbury]: EDP Sciences, Vol. 92. 5 p. 11019
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution bookOpen AccessFile10 Downloads (Pure)
'Microbial mortar'- restoration of degraded marble structures with microbially induced carbonate precipitationMinto, J. M., Tan, Q., Lunn, R. J., El Mountassir, G., Guo, H. & Cheng, X., 20 Aug 2018, In : Construction and Building Materials. 180, p. 44-54 11 p.
Research output: Contribution to journal › ArticleOpen AccessFile11 Citations (Scopus)36 Downloads (Pure)
Minto, J. M., MacLachlan, E., El Mountassir, G. & Lunn, R. J., 20 Dec 2016, In : Water Resources Research. 52, 11, p. 8827-8844 18 p.
Research output: Contribution to journal › ArticleOpen AccessFile31 Citations (Scopus)155 Downloads (Pure)