Electrosorption of Heavy Metals with Capacitive Deionization: Water Reuse, Desalination and Resources Recovery

Xu, Pei; Elson, Brian; Drewes, Jörg E.

doi:10.1002/9781118904855.ch12

Cited by 2 publications

(1 citation statement)

References 75 publications

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“…Currently, effort and focus in CDI researches have been put into the development and synthesis of better electrode materials to improve the CDI performance. Up to now various kinds of carbon-based materials such as activated carbon cloth (Huang et al, 2016), 3D graphene , activated carbon (AC) (Xu et al, 2014), Fe 3 O 4 /porous graphene nanocomposite (Bharath et al, 2017), carbon nanotube , O-doped BN nanosheet , 8 activated carbon with an ion-exchange membrane (Dong et al, 2018). have been studied as CDI electrode materials for lead removal from aqueous solution.…”

Section: Electrode Materials For CDI Application Specifically For Lea...mentioning

confidence: 99%

Removal of heavy metals from water by capacitive deionization electrode materials derived from chicken feathers

Alfred

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Capacitive deionization (CDI) is an emerging desalination technology based on the principle of electrical double layer capacitors. When the voltage is applied to the surface of the electrodes, electrodes become oppositely charged and ions are adsorbed onto the electrode surfaces under the presence of the electric field, thus producing a purified stream of water. Once the electrodes are saturated with ions, adsorbed ions can desorb from the surface of the electrodes when the applied voltage is reversed or removed. Electrode materials play an important role in CDI performance. To date, the porous carbon derived from biomass shows a competitive advantage in CDI practical applications because of their low production costs, availability, good electrical conductivity, large specific surface areas, and environmental compatibility. In this study a high surface area porous carbons were synthesized from chicken feathers through pyrolysis and KOH activation; the KOH: CF ratio (R) and activation temperature (Ta) were variable parameters. The carbon samples synthesized were characterized by SEM, FTIR spectroscopy and nitrogen adsorption-desorption isotherms at 77 K and desalination experiments were performed by using potentiostat/galvanostat. All samples except the untreated carbon exhibited type IV isotherms demonstrating the existence of mesopores. The lead (Pb2+) removal test was performed with a CDI cell containing the fabricated carbon electrode and 100 mgL-1 Pb (NO3)2 solution; the sample prepared with the ratio R of 1:1 and Ta = 800 K exhibited higher Pb2+ removal efficiency of 81% and electro sorption capacity of 4.1 mgg-1 at the electrode potential 1.2 V and flow rate 5 mLmin-1. Therefore, chicken feather derived carbon (CF) is considered a promising CDI electrode material for the removal of heavy metals from wastewater.

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Section: Electrode Materials For CDI Application Specifically For Lea...mentioning

confidence: 99%

Removal of heavy metals from water by capacitive deionization electrode materials derived from chicken feathers

Alfred

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Electroadsorption of uranium on amidoxime modified graphite felt

Xue

Cao

Gao

et al. 2021

Separation and Purification Technology

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Electrosorption of Heavy Metals with Capacitive Deionization: Water Reuse, Desalination and Resources Recovery

Cited by 2 publications

References 75 publications

Removal of heavy metals from water by capacitive deionization electrode materials derived from chicken feathers

Removal of heavy metals from water by capacitive deionization electrode materials derived from chicken feathers

Electroadsorption of uranium on amidoxime modified graphite felt

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