A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Techno-Economic Assessment of Brackish Water Electrochemical Desalination with Faradaic Electrodes
https://orcid.org/0000-0002-5197-3422
Capacitive deionization (CDI) has been widely studied for low-salinity desalination because of low-voltage operation, tunable salinity removal, and likely tolerance against fouling and scaling. Replacing carbonaceous electrodes with faradaic electrodes in CDI systems can increase both the energy efficiency and salt adsorption capacity. However, the techno-economic competitiveness of faradaic-based deionization systems versus carbon-electrode-based CDI and reverse osmosis (RO) remains unclear. In this study, we develop a parametric model to estimate the levelized cost of water (LCOW) produced by CDI, membrane CDI, and three architectures of faradaic-based deionization systems (hybrid deionization, dual-ion deionization, and battery deionization). We also investigate how different faradaic materials, operation conditions, and cell designs would impact the LCOW. Battery deionization outperforms hybrid deionization and dual-ion deionization in terms of LCOW. Additionally, in the scenario of a fixed 0.5-year lifespan, a lower LCOW of battery deionization is achieved at a higher ASAR with a lower thermodynamic energy efficiency; as such, operating at a higher current density can be a helpful strategy for reducing the cost of water production. Finally, sensitivity analysis indicates that electrode longevity and ion exchange membrane price are crucial parameters toward cost reduction of BDI to be cost-competitive with RO.
This work will facilitate the selection of more cost-effective architectures of faradaic deionization and provide insights toward cost reduction of electrochemical desalination technologies.
Techno-Economic Assessment of Brackish Water Electrochemical Desalination with Faradaic Electrodes
https://orcid.org/0000-0002-5197-3422
Capacitive deionization (CDI) has been widely studied for low-salinity desalination because of low-voltage operation, tunable salinity removal, and likely tolerance against fouling and scaling. Replacing carbonaceous electrodes with faradaic electrodes in CDI systems can increase both the energy efficiency and salt adsorption capacity. However, the techno-economic competitiveness of faradaic-based deionization systems versus carbon-electrode-based CDI and reverse osmosis (RO) remains unclear. In this study, we develop a parametric model to estimate the levelized cost of water (LCOW) produced by CDI, membrane CDI, and three architectures of faradaic-based deionization systems (hybrid deionization, dual-ion deionization, and battery deionization). We also investigate how different faradaic materials, operation conditions, and cell designs would impact the LCOW. Battery deionization outperforms hybrid deionization and dual-ion deionization in terms of LCOW. Additionally, in the scenario of a fixed 0.5-year lifespan, a lower LCOW of battery deionization is achieved at a higher ASAR with a lower thermodynamic energy efficiency; as such, operating at a higher current density can be a helpful strategy for reducing the cost of water production. Finally, sensitivity analysis indicates that electrode longevity and ion exchange membrane price are crucial parameters toward cost reduction of BDI to be cost-competitive with RO.
This work will facilitate the selection of more cost-effective architectures of faradaic deionization and provide insights toward cost reduction of electrochemical desalination technologies.
Techno-Economic Assessment of Brackish Water Electrochemical Desalination with Faradaic Electrodes
https://orcid.org/0000-0002-5197-3422
Capacitive deionization (CDI) has been widely studied for low-salinity desalination because of low-voltage operation, tunable salinity removal, and likely tolerance against fouling and scaling. Replacing carbonaceous electrodes with faradaic electrodes in CDI systems can increase both the energy efficiency and salt adsorption capacity. However, the techno-economic competitiveness of faradaic-based deionization systems versus carbon-electrode-based CDI and reverse osmosis (RO) remains unclear. In this study, we develop a parametric model to estimate the levelized cost of water (LCOW) produced by CDI, membrane CDI, and three architectures of faradaic-based deionization systems (hybrid deionization, dual-ion deionization, and battery deionization). We also investigate how different faradaic materials, operation conditions, and cell designs would impact the LCOW. Battery deionization outperforms hybrid deionization and dual-ion deionization in terms of LCOW. Additionally, in the scenario of a fixed 0.5-year lifespan, a lower LCOW of battery deionization is achieved at a higher ASAR with a lower thermodynamic energy efficiency; as such, operating at a higher current density can be a helpful strategy for reducing the cost of water production. Finally, sensitivity analysis indicates that electrode longevity and ion exchange membrane price are crucial parameters toward cost reduction of BDI to be cost-competitive with RO.
This work will facilitate the selection of more cost-effective architectures of faradaic deionization and provide insights toward cost reduction of electrochemical desalination technologies.
Techno-Economic Assessment of Brackish Water Electrochemical Desalination with Faradaic Electrodes
Hu, Kejia (author) / Chen, Jianxin (author) / Shanbhag, Sneha (author) / Liu, Xitong (author)
ACS ES&T Water ; 4 ; 5856-5867
2024-12-13
Article (Journal)
Electronic Resource
English
Faradaic electrode materials for next-generation electrochemical water desalination
| UB Braunschweig | 2019
Faradaic electrode materials for next-generation electrochemical water desalination
| TIBKAT | 2019