Techno-economic analysis of capacitive and intercalative water deionization

Metzger, Michael; Besli, Münir M.; Kuppan, Saravanan; Hellstrom, Sondra; Kim, Soo Jeong; Sebti, Elias; Subban, Chinmayee V.; Christensen, Jake

doi:10.1039/d0ee00725k

Cited by 88 publications

(42 citation statements)

References 41 publications

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“…Traditional desalination technologies, such as thermal distillation, reverse osmosis, and electrodialysis, exert heat, pressure, or electricity to extract water, which is highly energy-intensive [ 3 ]. Newly emerging processes, including capacitive deionization and membrane solar distillation, create less carbon footprint [ 4 ]. Capacitive deionization separates charged ions from saline media via electrosorption; the low applied cell voltage and high charge efficiency render this technique very promising regarding desalination of brackish water [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability in Capacitive Deionization

Xiong

Arnold

et al. 2021

Research

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Faradaic electrode materials have significantly improved the performance of membrane capacitive deionization, which offers an opportunity to produce freshwater from seawater or brackish water in an energy-efficient way. However, Faradaic materials hold the drawbacks of slow desalination rate due to the intrinsic low ion diffusion kinetics and inferior stability arising from the volume expansion during ion intercalation, impeding the engineering application of capacitive deionization. Herein, a pseudocapacitive material with hollow architecture was prepared via template-etching method, namely, cuboid cobalt hydroxide, with fast desalination rate (3.3 mg (NaCl)·g-1 (h-Co(OH)2)·min-1 at 100 mA·g-1) and outstanding stability (90% capacity retention after 100 cycles). The hollow structure enables swift ion transport inside the material and keeps the electrode intact by alleviating the stress induced from volume expansion during the ion capture process, which is corroborated well by in situ electrochemical dilatometry and finite element simulation. Additionally, benefiting from the elimination of unreacted bulk material and vertical cobalt hydroxide nanosheets on the exterior surface, the synthesized material provides a high desalination capacity (117±6 mg (NaCl)·g-1 (h-Co(OH)2) at 30 mA·g-1). This work provides a new strategy, constructing microscale hollow faradic configuration, to further boost the desalination performance of Faradaic materials.

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Section: Introductionmentioning

confidence: 99%

Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability in Capacitive Deionization

Xiong

Arnold

et al. 2021

Research

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“…For MCDI, the cell cost was found to be the largest contributor (~58%) of the total capital costs, while the maintenance costs were typically assumed to be 5% of equipment costs (Huyskens et al 2015). Metzger et al (2020) also reported similar findings that the costs of ion exchange membranes shared around ~80% of the total capital costs for MCDI.…”

Section: Total Costsmentioning

confidence: 72%

“…Lifetime-oriented considerations to total costs are crucial for the techno-economic analysis of brackish water desalination. A number of studies have reported the cost estimates based on parameterized process models to project fixed and variable costs at a large scale for RO and CDI (Bales et al 2019, Hand et al 2019, Metzger et al 2020). However, only a few studies provided the information of total costs based on real plant operations using RO and CDI, as presented in Table 8.…”

Section: Lifetime-oriented Considerations To Total Costsmentioning

confidence: 99%

Brackish water desalination using reverse osmosis and capacitive deionization at the water-energy nexus

et al. 2020

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In this article, we present a critical review of the reported performance of reverse osmosis (RO) and capacitive deionization (CDI) for brackish water (salinity < 5.0 g/L) desalination from the aspects of engineering, energy, economy and environment. We first illustrate the criteria and the key performance indicators to evaluate the performance of brackish water desalination. We then systematically summarize technological information of RO and CDI, focusing on the effect of key parameters on desalination performance, as well as energy-water efficiency, economic costs and environmental impacts (including carbon footprint). We provide in-depth discussion on the interconnectivity between desalination and energy, and the trade-off between kinetics and energetics for RO and CDI as critical factors for comparison. We also critique the results of technical-economic assessment for RO and CDI plants in the context of large-scale deployment, with focus on *Manuscript Click here to view linked References 2 lifetime-oriented consideration to total costs, balance between energy efficiency and clean water production, and pretreatment/post-treatment requirements. Finally, we illustrate the challenges and opportunities for future brackish water desalination, including hybridization for energy-efficient brackish water desalination, co-removal of specific components in brackish water, and sustainable brine management with innovative utilization. Our study reveals that both RO and CDI should play important roles in water reclamation and resource recovery from brackish water, especially for inland cities or rural regions.

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“…58 The use of CNTf wiring, which makes the final device 100% metal free, provides additional advantages; such as reducing the final carbon footprint, as well as cutting the final price, due to the increasing cost of metal sources. [59][60][61] These results make this work an important breakthrough in capacitive deionization technology, with potential for future development of CDI systems with a high ion removal capacity. In this sense, further improvements regarding the optimization of the cylindrical cell design and the development of cables made of CNTf are expected to help outperform the values reported in this manuscript.…”

Section: Electrochemical Characterization Electrochemical Properties Of Hybrid Electrodesmentioning

confidence: 85%

Low-energy consumption, free-form capacitive deionization through nanostructured networks

Santos

Rodríguez

Lado

et al. 2021

Carbon

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Techno-economic analysis of capacitive and intercalative water deionization

Abstract: This is a techno-economic analysis of intercalative water deionization (IDI), a novel battery-inspired concept for brackish water desalination with lower module cost, volume, and energy consumption than competing technologies.

Cited by 88 publications

References 41 publications

Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability in Capacitive Deionization

Three-Dimensional Cobalt Hydroxide Hollow Cube/Vertical Nanosheets with High Desalination Capacity and Long-Term Performance Stability in Capacitive Deionization

Brackish water desalination using reverse osmosis and capacitive deionization at the water-energy nexus

Low-energy consumption, free-form capacitive deionization through nanostructured networks

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