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Experimental Column Setup for Studying Anaerobic Biogeochemical Interactions Between Iron (Oxy)Hydroxides, Trace Elements, and Bacteria

Article DOI: 10.3791/56240-v • 06:52 min • December 19th, 2017
December 19th, 2017 •
1, 2, 1,3, 1
1Environmental Biogeochemistry and Water Quality Unit, BRGM, 2Risks and Risk Prevention Division, BRGM, 3Egg Safety & Quality Research

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Fate and speciation of arsenic and mercury in aquifers are closely related to physio-chemical conditions and microbial activity. Here, we present an original experimental column setup that mimics an aquifer and enables a better understanding of trace element biogeochemistry in anoxic conditions. Two examples are presented, combining geochemical and microbiological approaches.

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Experimental Setup Anaerobic Biogeochemical Interactions Iron (oxy)hydroxides Trace Elements Bacteria Sulfate Conditions Iron-reducing Conditions Microbial Activities Biogeochemistry Field Mercury Arsenic Continuous Water Flow Biogeochemical Reactions Lability Of Trace Elements Sampling Ports Fate Of Mercury And Arsenic Iron Oxides Carrier Substrates Hafida Tris Technician Glass Reactor Magnetic Stir Bar Iron(III)chloride Hexahydrate Sodium Hydroxide Precipitation PH Adjustment Arsenic Trioxide Concentration
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