1. Energy recovery from the flow-electrode capacitive deionization.
- Author
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Ma, Junjun, Liang, Peng, Sun, Xueliang, Zhang, Helan, Bian, Yanhong, Yang, Fan, Bai, Junfei, Gong, Qianming, and Huang, Xia
- Subjects
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CARBON electrodes , *CARBON nanotubes , *SEVERANCE pay , *ENERGY consumption , *DENSITY currents , *ELECTROLYTES - Abstract
Abstract The energy consumed during the desalination process in a flow-electrode capacitive deionization (FCDI) is recovered by a two-chamber device, where the adsorbed electrodes are discharged with constant current. When single constant discharge current is applied, the maximum energy of 36.3 J can be obtained with 0.50 mA/cm2 discharge current density. Much more energy is recovered by applying successive discharge currents. With additional conductive agent carbon nanotubes in the suspend carbon electrodes, the ratio was further enhanced by 60%. Increased salt concentration of the electrolyte could decrease the energy consumption and improve the energy recovery. The energy recovery ratio was promoted to 9.4% when the salt concentration of the electrolyte increased to 9.60 g L−1. Highlights • Two-chamber device to recover the energy from FCDI. • Successive discharging currents benefit the energy recovery. • Additional CNT improved energy recovery ratio by 60%. • Increased salt concentration of electrode improved energy recovery performance. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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