Unsaturated fluid flow through granular soils treated with microbial induced desaturation and precipitation

Elizabeth G.Stallings Young, Claudia E. Zapata, Leon Van Paassen

Research output: Contribution to journalConference articlepeer-review

Abstract

The use of microorganisms to induce desaturation of granular soils via denitrification results in nitrogen and carbon dioxide gas generation, which in turn lowers the degree of saturation of the soil matrix. Given sufficient substrates, the stimulated bacteria will produce enough gas to develop a continuous gas phase. Introducing gas into the soil to reduce the degree of saturation is shown to increase the soil resistance to dynamic loading and helps to mitigate liquefaction. The impact of desaturation on liquefaction hazard mitigation has comparative value to the calcite precipitation phase of the process. Meso-scale tests have been performed on a relatively thin tank of soil to simulate planar flow through a granular soil treated with MIDP.

Original languageEnglish (US)
Article number05003
JournalE3S Web of Conferences
Volume195
DOIs
StatePublished - Oct 16 2020
Event4th European Conference on Unsaturated Soils, E-UNSAT 2020 - Lisboa, Portugal
Duration: Oct 19 2020Oct 21 2020

ASJC Scopus subject areas

  • Environmental Science(all)
  • Energy(all)
  • Earth and Planetary Sciences(all)

Fingerprint

Dive into the research topics of 'Unsaturated fluid flow through granular soils treated with microbial induced desaturation and precipitation'. Together they form a unique fingerprint.

Cite this