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Applications of Microbial Processes in Geotechnical Engineering.

Grainne El Mountassir1, James M Minto1, Leon A van Paassen2

  • 1Department of Civil and Environmental Engineering, University of Strathclyde, Glasgow, United Kingdom.

Advances in Applied Microbiology
|August 26, 2018
PubMed
Summary

Biogeotechnics offers eco-friendly ground improvement using microbial processes. This review covers microbially induced carbonate precipitation (MICP) and emerging fungal applications for soil enhancement.

Keywords:
Biogenic gasDenitrificationFungiGeotechnical engineeringMicrobially induced carbonate precipitationUreolysis

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Area of Science:

  • Geotechnical Engineering
  • Environmental Science
  • Microbiology

Background:

  • Geotechnical engineering faces challenges with traditional ground improvement methods regarding environmental impact and cost.
  • Biogeotechnics has emerged as a sustainable alternative, utilizing microbial processes for soil and rock modification.
  • Current research focuses on microbial processes to enhance soil hydraulic and mechanical properties.

Purpose of the Study:

  • To review the advancements in the emerging field of biogeotechnics.
  • To summarize promising microbial processes for soil and rock improvement.
  • To explore novel applications of fungi in geotechnical engineering.

Main Methods:

  • Comprehensive literature review of biogeotechnical studies.
  • Analysis of microbially induced carbonate precipitation (MICP) via ureolysis.
  • Examination of other microbial processes like MICP via denitrification and biogenic gas generation.
  • Exploration of fungal applications in geotechnical contexts.

Main Results:

  • Microbially induced carbonate precipitation (MICP) via ureolysis is a well-researched method for ground improvement.
  • Other MICP pathways and biogenic gas generation show potential for altering soil properties.
  • Fungal applications in geotechnical engineering represent a new and unexplored research frontier.

Conclusions:

  • Biogeotechnics offers a promising, sustainable approach to ground improvement.
  • MICP and other microbial processes are effective in modifying soil behavior.
  • Further research into fungal applications could unlock new geotechnical solutions.