Apol, Emile

Banning, Hans

Faber, Folkert

Hofstede, Gert

Nap, Jan Peter

Tideman, Jeroen

Wedema, Ronald

Excess of renewable electricity from wind turbines or solar panels is used for electrolysis of water. To store this renewable energy as methane, the hydrogen is fed to an anaerobic digester to stimulate biological methanation by hydrogenotrophic methanogens. This workpackage focusses on the best ways for hydrogen delivery and the community changes in a biomethanation reactor as a result of hydrogen supply

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l     Co-financed by the Taskforce Applied Research SIA, part of the Dutch Organisation for Scientific Research (NWO).  Power to Methane    WP2/3: A promising new method for hydrogen delivery to methanogens results in more methane from biomass Gert Hofstede, Emile Apol, Ronald Wedema, Hans Banning, Jeroen Tideman,                Folkert Faber (WPL) and Jan Peter Nap   Excess of renewable electricity from wind turbines or solar panels is used for electrolysis of water. To store this renewable energy as methane, the hydrogen is fed to an anaerobic digester to stimulate biological methanation by hydrogenotrophic methanogens. This workpackage focusses on the best ways for hydrogen delivery and the community changes in a biomethanation reactor as a result of hydrogen supply.  Biological Power to Methane is based on the ability of microorganisms to make methane from (renewable) hydrogen and carbon dioxide (Figure 1).  Figure 1. Biological Power to Methane  The effect of hydrogen of methane formation was studied at mesophilic conditions (42°C) at atmospheric pressure in two 10 L bioreactors (Infors) in both an in situ and an ex situ setup (Figure 2), with different ways of hydrogen supply and appropriate controls.  Figure 2. Reactor set-ups used  Results  The addition of hydrogen biogas resulted in both set-ups in more methane per unit biomass (Figure 3 in situ).  Figure 3. Methane per amount of biomass (in situ)  In both reactor setups the innovative use of high permeable silicone tubing resulted in sufficient diffusion and hydrogen solubilisation to convert it with carbon dioxide in methane. Adding hydrogen to an experimental reactor (in situ) is therefore attractive.   Future activities  • Taqman assay to study the effects of hydrogen supply on the microbial community • Scaling up (WP5) • Further comparison in situ and ex situ             

Power to methane:WP 2/3: a promising new method for hydrogen delivery to methanogens results in more methane from biomass

https://research.hanze.nl/ws/files/16437695/21_en_22_WP2_poster_JP_mn2.pdf

Power to methane:WP 2/3: a promising new method for hydrogen delivery to methanogens results in more methane from biomass

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