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Effects On Iron And Cobalt On Methane Production From Dairy Cattle Manure, Mark E. Himes
Effects On Iron And Cobalt On Methane Production From Dairy Cattle Manure, Mark E. Himes
Retrospective Theses and Dissertations
The effects of iron and cobalt on methanogenesis from dairy cattle manure were studied. Four-liter digestors with 3-liter working volumes were charged daily with dairy manure (4.5% W/V volatile solids) to achieve a 3-day retention time. Digestors were incubated at 37°C and pH 7.0 on a rotary shaker. Duplicate digestors were maintained under the following parameters: controls (no ions added), Co++ at 4.958 mg/liter, Fe++ at 20.64 mg/liter and Fe++ and Co++ at above stated final digestor concentrations.
Significantly higher production of biogas and methane occurred with the addition of iron (p = .05). Iron-amended digestors …