Fig. 3

Carbon balance of the acidogenic duckweed reactors. Total carbon percent contributions from initial duckweed, inocula, and alkalinity, and final soluble (< 0.2 µm), particulate (> 0.2 µm; < 340 µm), solid (> 340 µm), and gaseous phases of the reactors under: a acidic mesophilic; b acidic thermophilic; c basic mesophilic; d basic thermophilic conditions. Error bars are cumulative standard deviations of the individual measurements