Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microbial-Induced Calcite Precipitation (MICP) Using Surfactants
Microbial-induced calcite precipitation (MICP) is an evolving technology for modifying engineering characteristics of the soil, including strength, stiffness, and permeability. However, application in the field is facing the difficulty of achieving uniform distribution of precipitated calcite, which questions the homogeneity and overall efficiency and limits the feasible scales of treatment. This lack of uniformity is mainly ascribed to the common distribution of the injected bacteria. To overcome the uniformity issue, the study described in this paper examines the effect of surfactants on the transport and distribution of the bacteria (Sporosarcina pasteurii) and on MICP efficiency and distribution. Batch tests are used to evaluate the effect of surfactants on the urease activity, while column tests are used to describe changes in attachment efficiency and bacterial distribution. A notable increase in MICP efficiency was noticed with surfactants in general. It was found that surfactants can be used to generate a remote localized MICP.
Microbial-Induced Calcite Precipitation (MICP) Using Surfactants
Microbial-induced calcite precipitation (MICP) is an evolving technology for modifying engineering characteristics of the soil, including strength, stiffness, and permeability. However, application in the field is facing the difficulty of achieving uniform distribution of precipitated calcite, which questions the homogeneity and overall efficiency and limits the feasible scales of treatment. This lack of uniformity is mainly ascribed to the common distribution of the injected bacteria. To overcome the uniformity issue, the study described in this paper examines the effect of surfactants on the transport and distribution of the bacteria (Sporosarcina pasteurii) and on MICP efficiency and distribution. Batch tests are used to evaluate the effect of surfactants on the urease activity, while column tests are used to describe changes in attachment efficiency and bacterial distribution. A notable increase in MICP efficiency was noticed with surfactants in general. It was found that surfactants can be used to generate a remote localized MICP.
Microbial-Induced Calcite Precipitation (MICP) Using Surfactants
Dawoud, O. (Autor:in) / Chen, C. Y. (Autor:in) / Soga, K. (Autor:in)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Technical Papers ; 1635-1643
24.02.2014
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Microbial Induced Calcite Precipitation (MICP) Using Surfactants
| British Library Conference Proceedings | 2014
| Taylor & Francis Verlag | 2022
Microbially Induced Calcite Precipitation (MICP): Review from an Engineering Perspective
| Online Contents | 2022
| British Library Conference Proceedings | 2014