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JoVE Journal

Environment

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Laboratory Simulation of an Iron(II)-rich Precambrian Marine Upwelling System to Explore the Growth of Photosynthetic Bacteria

11.7K Views

09:45 min

July 24th, 2016

July 24th, 2016

11,656 Views

0:05

Title

1:17

Preface and Column Assembly

3:15

Flushing Oxygen and Loading Medium

6:07

Inoculation and Sampling

7:33

Results: Cyanobacteria Inoculation

8:50

Conclusion

Transkript

The overall goal of this experimental approach is to simulate a ferruginous upwelling system and to detect geochemical profiles of oxygen and aqueous iron in the water column when cyanobacteria were present and produces oxygen by photosynthesis. T

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We simulated a Precambrian ferruginous marine upwelling system in a lab-scale vertical flow-through column. The goal was to understand how geochemical profiles of O2 and Fe(II) evolve as cyanobacteria produce O2. The results show the establishment of a chemocline due to Fe(II) oxidation by photosynthetically produced O2.

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