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Institut de minéralogie, de physique des matériaux et de cosmochimie

Real-time geochemical monitoring of bioreactors

In collaboration with Didier Jezequel (IPGP), a batch bioreactor has been set up to follow in situ the physical and chemical variations of culture solutions with a high temporal resolution (< 5s). The actual design of the bioreactor allows to acquire six different physicochemical parameters of the bulk solution via probes (i.e. pH, aCa2+, conductivity and T) and sensor spots (pO2, pCO2) and sample cells under sterile conditions. This bioreactor coupled with microscopy analyses (i.e., CLSM, TEM) is a powerful experimental apparatus to better understand the influence of diverse physicochemical parameters on the formation of intracellular carbonates by cyanobacteria in relation with their physiological state.


ERC Calcyan

Diversity / Ultrastructures / Molecular mechanisms / Isotopic fractionation (Sr, Ba) / Environmental and geochemical / Fossilization 

Correlative SEM-CLSM / STXM / Real-time geochemistry



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