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- W3107604755 endingPage "107869" @default.
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- W3107604755 abstract "Abstract In situ biomethanation combines Power-to-Gas and biogas upgrading by converting electricity-derived H2 and biogas-CO2 to CH4 in existing biogas reactors. Development of industrially relevant H2 injection technologies that facilitate high H2 gas-liquid mass transfer rates is key to advance the technology to commercial application. This study shows the potential of using a venturi-based biogas reactor mixing system for H2 injection into a full-scale biogas reactor by assessing the system’s H2 gas-liquid mass transfer capacity in short-term H2 injection experiments (1 h). H2 conversion rates were limited by H2 gas-liquid mass transfer at all experimental conditions and governed by H2 injection and biogas production rates. The highest experimental H2 conversion rate and H2 conversion efficiency amounted to 24.7 L H2 · m−3 · h-1 and 49 %, respectively. A predictive model suggests that the injection system can facilitate H2 conversion rates to a level equivalent to the stoichiometric conversion of 24–33% of the internally produced CO2 to CH4 in the full-scale reactor. The studied H2 injection technology hence provides a potential solution for low-cost partial in situ biogas upgrading, by using already installed mixing-capacity to facilitate H2 gas-liquid mass transfer." @default.
- W3107604755 created "2020-12-07" @default.
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- W3107604755 date "2021-02-01" @default.
- W3107604755 modified "2023-09-24" @default.
- W3107604755 title "Integrating H2 injection and reactor mixing for low-cost H2 gas-liquid mass transfer in full-scale in situ biomethanation" @default.
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- W3107604755 doi "https://doi.org/10.1016/j.bej.2020.107869" @default.
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