Abstract

Microbially induced calcium carbonate precipitation (MICP) is attracting increasing attention as a sustainable means of soil improvement. Microbial denitrification has the potential to become the preferred method for MICP because denitrification does not produce toxic byproducts, does not require a water-soluble electron donor, can utilize nearly 100 of the electron donor, does not require exogenous organic nitrogen, is thermodynamically more favorable than other processes, readily occurs under anoxic conditions, and potentially has a greater carbonate yield per mole of substrate than other MICP processes. Bench scale bioreactor and column tests using Pseudomonas denitrificans have shown that calcite can be precipitated from calcium-rich pore water using denitrification. Recent experiments at Arizona State University and by others have sought to reduce potential environmental impacts and lower costs associated with denitrification by reducing the total dissolved solids in the reactors and columns and by addressing the loss of free calcium in the form of calcium phosphate precipitate from the pore fluid.

Original languageEnglish (US)
Title of host publicationGeo-Frontiers 2011
Subtitle of host publicationAdvances in Geotechnical Engineering - Proceedings of the Geo-Frontiers 2011 Conference
Pages3925-3934
Number of pages10
Edition211 GSP
DOIs
StatePublished - May 27 2011
EventGeo-Frontiers 2011: Advances in Geotechnical Engineering - Dallas, TX, United States
Duration: Mar 13 2011Mar 16 2011

Publication series

NameGeotechnical Special Publication
Number211 GSP
ISSN (Print)0895-0563

Other

OtherGeo-Frontiers 2011: Advances in Geotechnical Engineering
CountryUnited States
CityDallas, TX
Period3/13/113/16/11

Keywords

  • Minerals
  • Precipitation
  • Soil stabilization

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Hamdan, N., Kavazanjian, E., Rittmann, B., & Karatas, I. (2011). Carbonate mineral precipitation for soil improvement through microbial denitrification. In Geo-Frontiers 2011: Advances in Geotechnical Engineering - Proceedings of the Geo-Frontiers 2011 Conference (211 GSP ed., pp. 3925-3934). (Geotechnical Special Publication; No. 211 GSP). https://doi.org/10.1061/41165(397)401