Electrochemical methods for carbon dioxide separations

Diederichsen, Kyle M.; Sharifian, Rezvan; Kang, Jin Soo; Liu, Yayuan; Kim, Seoni; Gallant, Betar M.; Vermaas, David A.; Hatton, T. Alan

doi:10.1038/s43586-022-00148-0

Cited by 71 publications

(52 citation statements)

References 107 publications

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“…By analogy to wastewater refining, carbon capture & utilization (CCU) is a rapidly maturing field that is investigated academically and pursued industrially; CCU feedstocks range from flue gas to direct air capture, and products include fuels, syngas, and organic commodities. 28,29 Similar open challenges exist in electrochemical wastewater refining: selective reactions and separations must be improved at multiple scales through sorption, catalysis, transport, separations, and reactor engineering. The breadth of wastewater contaminants and products requires contributions from the fundamental chemical sciences to extract the full potential from wastewater contaminants, especially with selective recovery from complex mixtures.…”

Section: Closing the Gap Between Opportunity And Practice For Wastewa...mentioning

confidence: 99%

Electrochemical wastewater refining: a vision for circular chemical manufacturing

Miller

Abels

Guo

et al. 2023

Preprint

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Wastewater is an underleveraged resource; it contains pollutants that can be transformed into valuable high-purity products. Innovations in chemistry and chemical engineering will play critical roles in valorizing wastewater to remediate environmental pollution, provide equitable access to chemical resources and services, and secure critical materials from diminishing feedstock availability. This perspective envisions electrochemical wastewater refining—the use of electrochemical processes to tune and recover specific products from wastewaters—as the necessary framework to accelerate wastewater-based electrochemistry to widespread practice. We define and prescribe a use-informed approach that simultaneously serves specific wastewater-pollutant-product triads and uncover mechanistic understanding generalizable to broad use cases. We use this approach to evaluate research needs in specific case studies of electrocatalysis, stoichiometric electrochemical conversions, and electrochemical separations. Finally, we provide rationale and guidance for intentionally expanding the electrochemical wastewater refining product portfolio. Wastewater refining will require a coordinated effort from multiple expertise areas to meet the urgent need of extracting maximal value from complex, variable, diverse, and abundant wastewater resources.

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Section: Closing the Gap Between Opportunity And Practice For Wastewa...mentioning

confidence: 99%

Electrochemical wastewater refining: a vision for circular chemical manufacturing

Miller

Abels

Guo

et al. 2023

Preprint

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“…29,33,34 Since the reactions are driven by supplying electrons in a controllable manner, we can avoid chemical use and parasitic reactions. 31,35,36 To date, two approaches have been proposed for electrochemically driven CO 2 removal from seawater: electro-deionization 30,34 and electrodialysis. 29,33,[37][38][39] In the electro-deionization process, water splitting reactions generating hydrogen and oxygen gases occur at each electrode to modulate the pH, driving CO 2 removal from the oceanwater.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric chloride-mediated electrochemical process for CO₂ removal from oceanwater

Kim

Nitzsche

Rufer

et al. 2023

Energy Environ. Sci.

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“…14 Frequently, expensive materials such as bipolar membranes, ion-exchange membranes, carbon nanotubes, ionic liquid electrolytes, and specialty polymers are used raising concerns about capital cost. 13,15,16 Some electrochemical techniques, e.g. EMAR, also employ amines which have the above-mentioned limitations.…”

Section: Introductionmentioning

confidence: 99%

Scaling Supercapacitive Swing Adsorption of CO2 Using Bipolar Electrode Stacks

Bilal

Landskron

2023

Preprint

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Supercapacitive Swing Adsorption (SSA) modules with bipolar stacks having 2, 4, 8 and 12 electrode pairs made from BPL 4x6 activated carbon were constructed and tested for carbon dioxide capture applications. Tests were performed with simulated flue gas (15%CO2 /85%N2) at 2, 4, 8 and 12 V, respectively. Reversible adsorption with sorption capacities (~58 mmol·kg-1) and adsorption rates (~38 µmol·kg-1·s-1) were measured for all stacks. The productivity scales with the number cells in the module, and increases from 70 to 390 mmol.h-1m-2. Energy efficiency and the energy consumption improved with increasing number of electrodes from 67% to 84%, and 142 to 60 kJ·mol-1, respectively. Overall, the results show that SSA modules with bipolar electrodes can be scaled without reducing the adsorptive performance, and with improvement of energetic performance.

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Electrochemical methods for carbon dioxide separations

Cited by 71 publications

References 107 publications

Electrochemical wastewater refining: a vision for circular chemical manufacturing

Electrochemical wastewater refining: a vision for circular chemical manufacturing

Asymmetric chloride-mediated electrochemical process for CO₂ removal from oceanwater

Scaling Supercapacitive Swing Adsorption of CO2 Using Bipolar Electrode Stacks

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Electrochemical methods for carbon dioxide separations

Cited by 71 publications

References 107 publications

Electrochemical wastewater refining: a vision for circular chemical manufacturing

Electrochemical wastewater refining: a vision for circular chemical manufacturing

Asymmetric chloride-mediated electrochemical process for CO2 removal from oceanwater

Scaling Supercapacitive Swing Adsorption of CO2 Using Bipolar Electrode Stacks

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Product

Resources

About

Asymmetric chloride-mediated electrochemical process for CO₂ removal from oceanwater