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. 2020 Nov 27;43(2):445–454. doi: 10.1007/s10529-020-03050-5

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© The Author(s) 2020

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Fig. 2 — a Voltage vs. time curves with different amounts of introduced acetate (given in mg BOD₅) in MFC “A”; b linear correlation of the total charge (Q) values vs. introduced acetate in mg BOD₅ for each MFC (error bars = standard deviation of Q, n = 3–5)