Fig. 2From: Turning C1-gases to isobutanol towards great environmental and economic sustainability via innovative biological routes: two birds with one stoneSchematic process flow diagram of isobutanol production from C1 gases. A100: gas supply; A200: isobutanol production; A300: isobutanol purification; A400: wastewater treatment; A500: utilities; PBR: closed tubular photobioreactors just for culturing autotrophic microbes using CO2; BCB: bubble column bioreactors just for culturing heterotrophic microbes using CH4Back to article page