A Modeling Study of the Bio-geochemical Processes in Microbially Induced Calcite Precipitation
Microbially induced calcite precipitation (MICP) offers potential for the development of innovative and environmental friendly techniques for soil improvement. The main purpose of this study is deepening the understanding of bio-geochemical processes involved in MICP by means of numerical modelling. In this paper a coupled bio-geochemo-hydraulic model considering multispecies bio-reactive transport is presented. Generally, this model is based on the theory of porous media, continuum mechanics and solved by finite element method (FEM). Utilizing this model a numerical case study is performed. It is estimated that this model is able to predict a rational bio-geochemical behavior of MICP. Besides, sensitivity analysis regarding the relevant model parameters has been performed to identify key factors in the MICP processes.
KeywordsMICP Bioremediation Biogeochemical Coupled model Multispecies
- Barkouki TH, Martinez BC, Mortensen BM, Weathers TS, De Jong JD, Ginn TR, Spycher NF, Smith RW, Fujita Y (2014, September) Forward and inverse bio-geochemical modeling of microbially induced calcite precipitation in half-meter column experiments. http://doi.org/10.1007/s11242-011-9804-zCrossRefGoogle Scholar
- Kolditz O, Bauer S, Bilke L, Böttcher N, Delfs JO, Fischer T, Zehner B (2012) OpenGeoSys: an open-source initiative for numerical simulation of thermo-hydro-mechanical/chemical (THM/C) processes in porous media. Environ Earth Sci 67(2):589–599. https://doi.org/10.1007/s12665-012-1546-xCrossRefGoogle Scholar
- Martinez BC, Barkouki TH, DeJong JD, Ginn TR (2011) Upscaling of microbial induced calcite precipitation in 0.5mcolumns: experimental and modeling results. In: Han J, Alzamora DA (eds) Advances on geotechnical engineering. Geotechnical Special Publications. Proceedings of geo-frontiers, 13–16 March 2011, Dallas, TexasGoogle Scholar
- van Paassen LA (2009) Biogrout, ground improvement by microbial induced carbonate precipitation. PhD thesis, Delft University of TechnologyGoogle Scholar