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. 2019 Jul 8;4(7):11785–11790. doi: 10.1021/acsomega.9b00863

Figure 1.

Figure 1

(A) Schematic of the MEB and the four-step energy recovery cycle; (B) energy recovery cycle of the charge-free MEB equipped with a PB cationic electrode and a PPy anionic electrode flushed with real seawater and wastewater effluent.