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Fig. 1 | Biotechnology for Biofuels

Fig. 1

From: Hybrid photosynthesis-powering biocatalysts with solar energy captured by inorganic devices

Fig. 1

Hybrid photosynthesis with photovoltaic cell. a PV-driven MES or EE. In the first MES-based example, R. eutropha oxidized H2 generated at the cathode to reduce CO2 into PHB and/or C3 and C5 alcohols [77]. In the second EE-based example, the reduction of CO2 into formate by a formate dehydrogenase via NADH and neutral red (NR) could be powered by a PV cell [108,109,110, 112]. No membrane was present between the electrodes in the first example, while in the second example, either an ion-exchange membrane (IEM) or salt bridge was present. b Alternatively, PV can power H2 evolution by an electrolyzer. H2 can then be mixed with CO2 and fed to a gas bioreactor. Here, a polymer electrolyte membrane (PEM) electrolyzer is depicted

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