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. 2021 Mar 27;9(4):694. doi: 10.3390/microorganisms9040694

Figure 4.

Figure 4

A schematic representation of the incorporation of anaerobic fungi into (a) single-stage biomethane production; (b) two-stage dark fermentation and methanogenesis; (c) single-stage dark fermentation and photofermentation; (d) two-stage dark fermentation and photofermentation; and (e) two-stage dark fermentation and microbial electrolysis.