Project TitleBiologically induced methane oxidation and precipitation of carbonate minerals: An experimental study
AcronymDeep Sea Geochem CaCO3
URLhttps://www.bco-dmo.org/project/743426
CreatedAugust 9, 2018
ModifiedSeptember 14, 2018

Project Description

Biologically-mediated CaCO3 precipitation widely occurs in aquatic systems and is often directly linked to the metabolic activity of microorganisms, which could significantly affect the local environment. An example is oxidation of methane and reduction of sulfate mediated by a consortium of Bacteria and Archaea. In order to investigate geochemistry of CaCO3precipitated abiotically and under microbial activity experimental work was initiated.  The abiotic experiments were performed at different temperatures and pressures (nitrogen and nitrogen-methane mixture).  Further geochemical analyses will allow evaluating of the effect of total pressure and methane partial pressure on the geochemistry of CaCO3. Sulfate reducing bacterial (Desulfovibrio salexigens) was successfully cultured and precipitation experiments on microbially mediated CaCO3 are in progress. This work is relevant to C-DEBI Research Theme I (Activity in the Deep Subseafloor Biosphere: function & rates of global biogeochemical processes) because carbonate growth rate is linked to microbial activity and the rate of methane oxidation.

Project Maintainers

NameAffiliationRoleContact
Rinat GabitovMississippi State University (MSU)Principal Investigator
Karyn L. RogersRensselaer Polytechnic Institute (RPI)Co-Principal Investigator
Chiara BorrelliUniversity of RochesterContact
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