Summary
Membrane inlet mass spectrometry has been used to determine the effect of oxygen on methanogenesis in samples from a rumen and an anaerobic digester. A membrane covered Photobacterium probe, in conjunction with the mass spectrometer, was used to measure low (> 30 nM) levels of dissolved oxygen. Methanogenesis in both systems was inhibited by dissolved oxygen concentrations below 30 nM. In samples from the rumen, oxygen inhibition of methanogenesis was fully reversible; in anaerobic digester samples short term irreversibility was observed.
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Scott, R.I., Williams, T.N. & Lloyd, D. Oxygen sensitivity of methanogenesis in rumen and anaerobic digester populations using mass spectrometry. Biotechnol Lett 5, 375–380 (1983). https://doi.org/10.1007/BF00131275
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DOI: https://doi.org/10.1007/BF00131275