A State of the Art Update on Integrated CO2 Capture and Electrochemical Conversion Systems

2022 ◽  
Author(s):  
Oriol Gutiérrez-Sánchez ◽  
Barbara Bohlen ◽  
Nick Daems ◽  
Metin Bulut ◽  
Deepak Pant ◽  
...  
Keyword(s):  
Co2 Capture ◽  
State Of The Art ◽  
Electrochemical Conversion

scholarly journals CO2 Capture, Use, and Storage in the Cement Industry: State of the Art and Expectations

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5692 ◽  
Author(s):  
Marta G. Plaza ◽  
Sergio Martínez ◽  
Fernando Rubiera
Keyword(s):  
Co2 Capture ◽  
Carbon Capture ◽  
State Of The Art ◽  
Pilot Scale ◽  
Cement Industry ◽  
General Overview ◽  
Climate Targets ◽  
Commercial Scale ◽  
And Storage ◽  
Made In

The implementation of carbon capture, use, and storage in the cement industry is a necessity, not an option, if the climate targets are to be met. Although no capture technology has reached commercial scale demonstration in the cement sector yet, much progress has been made in the last decade. This work intends to provide a general overview of the CO2 capture technologies that have been evaluated so far in the cement industry at the pilot scale, and also about the current plans for future commercial demonstration.

scholarly journals Oxygen Stable Electrochemical CO2 Capture and Concentration through Alcohol Additives

2021 ◽  
Author(s):  
Jenny Yang ◽  
Jeffrey Barlow
Keyword(s):  
Co2 Capture ◽  
Flue Gas ◽  
Reduction Potential ◽  
State Of The Art ◽  
Redox Properties ◽  
Intermolecular Hydrogen Bonding ◽  
Hydrogen Bond Donor ◽  
Reduction Potentials ◽  
Hydrogen Bonding Interactions ◽  
System Properties

Current methods for CO2 capture and concentration (CCC) are energy intensive due to their reliance on thermal cycles, which are intrinsically Carnot limited in efficiency. In contrast, electrochemically driven CCC (eCCC) can operate at much higher theoretical efficiencies. However, most reported systems are sensitive to O2, precluding their practical use. In order to achieve O2 stable eCCC, we pursued the development of molecular redox carriers with reduction potentials positive of the O2/O2- redox couple. Prior efforts to chemically modify redox carriers to operate at milder potentials resulted in a loss in CO2 binding. To overcome these limitations, we used common alcohols additives to anodically shift the reduction potential of a quinone redox carrier, 2,3,5,6-tetrachloro-p-benzoquinone (TCQ), by up to 350 mV, conferring O2 stability. Intermolecular hydrogen-bonding interactions to the dianion and CO2-bound forms of TCQ were correlated to alcohol pKa to identify ethanol as the optimal additive, as it imparts beneficial changes to both the reduction potential and CO2 binding constant, the two key properties for eCCC redox carriers. We demonstrate a full cycle of eCCC in aerobic simulated flue gas using TCQ and ethanol, two commercially available compounds. Based on the system properties, an estimated minimum of 21 kJ/mol is required to concentrate CO2 from 10% to 100%, or twice as efficient as state-of-the-art thermal amine capture systems and other reported redox carrier-based systems. Furthermore, this approach of using hydrogen-bond donor additives is general and can be used to tailor the redox properties of other quinones/alcohol combinations for specific CO2 capture applications.

Post-combustion CO2 capture by aqueous ammonia: A state-of-the-art review

2012 ◽  
Vol 9 ◽  
pp. 355-371 ◽  
Author(s):  
Bingtao Zhao ◽  
Yaxin Su ◽  
Wenwen Tao ◽  
Leilei Li ◽  
Yuanchang Peng
Keyword(s):  
Co2 Capture ◽  
Aqueous Ammonia ◽  
State Of The Art

Efficient CO2 to CO electrolysis on solid Ni–N–C catalysts at industrial current densities

2019 ◽  
Vol 12 (2) ◽  
pp. 640-647 ◽  
Author(s):  
Tim Möller ◽  
Wen Ju ◽  
Alexander Bagger ◽  
Xingli Wang ◽  
Fang Luo ◽  
...  
Keyword(s):  
Solid State ◽  
State Of The Art ◽  
The State ◽  
Electrochemical Conversion ◽  
Active Moiety ◽  
Current Densities ◽  
Carbon Catalysts

We demonstrate the direct electrochemical conversion of CO2 to CO using solid state Ni–N–C carbon catalysts characterized by a coordinative molecular Ni–Nx active moiety at industrial current densities of up to 700 mA cm−2 with faradaic efficiencies superior to those of the state-of-the-art AgOx electrocatalysts.

Novel CO2 Emissions Reduction Technique for IGCC Plants

2005 ◽  
Author(s):  
E. Kakaras ◽  
A. Koumanakos ◽  
A. Doukelis ◽  
D. Giannakopoulos ◽  
Ch. Hatzilau ◽  
...  
Keyword(s):  
Power Plant ◽  
Co2 Capture ◽  
Power Plants ◽  
State Of The Art ◽  
Combined Cycle ◽  
The Novel ◽  
Operating Characteristics ◽  
Calcination Process ◽  
Combined Cycle Power Plant ◽  
Novel Concept

Scope of the work presented is to examine and evaluate the state of the art in technological concepts towards the capture and sequestration of CO2 from coal-fired power plants. The discussion is based on the evaluation of a novel concept dealing with the carbonation-calcination process of lime for CO2 capture from coal fired power plants compared to integration of CO2 capture in an Integrated Gasification Combined Cycle power plant. In the novel concept, coal is gasified with steam in the presence of lime. Lime absorbs the CO2 released from the coal, producing limestone. The produced gas can be a low-carbon or even zero-carbon (H2) gas, depending on the ratio of lime added to the process. The produced gas can be used in state-of-the-art combined cycles for electricity generation, producing almost no CO2 emissions or other harmful pollutants. The limestone is regenerated in a second reactor, where pure CO2 is produced, which can be either marketed to industry or sequestered in long term disposal areas. The simulation model of a Combined Cycle power plant, integrating the novel carbonation-calcination process, is based on available data from a typical natural gas fired Combined Cycle power plant. The natural gas fired power plant was adopted to firing with the low-C fuel, maintaining the basic operating characteristics. The performance of the novel concept power plant is compared to that of an IGCC with CO2 removal by means of Selexol absorption. Results from thermodynamic simulation, dealing with the most important features for CO2 reduction, are presented. The operating characteristics, as well as the main figures of the plant energy balances are included. A preliminary economic comparison is also provided, taking into account investment and operating costs, in order to estimate the electricity cost related to the two different technological approaches and the economic constrains towards the potentials for applications are examined. The cycle calculations were performed using the thermodynamic cycle calculation software ENBIPRO (ENergie-BIllanz-PROgram). ENBIPRO is a powerful tool for heat and mass balance calculations, solving complex thermodynamic circuits, calculating the efficiency, and allowing exergetic and exergoeconomic analysis of power plants. The software code models all pieces of equipment that usually appear in power plant installations and can accurately calculate all thermodynamic properties (temperature, pressure, enthalpy) at each node of the thermodynamic circuit, power consumption of each component, flue gas composition etc [1]. The code has proven its validity by accurately simulating a large number of power plants and through comparison of the results with other commercial software.

scholarly journals Integrating CO2 Capture with Electrochemical Conversion Using Amine-Based Capture Solvents as Electrolytes

2021 ◽  
Author(s):  
Elena Pérez-Gallent ◽  
Chirag Vankani ◽  
Carlos Sánchez-Martínez ◽  
Anca Anastasopol ◽  
Earl Goetheer
Keyword(s):  
Co2 Capture ◽  
Electrochemical Conversion

scholarly journals Post-combustion CO2 capture with chemical absorption: A state-of-the-art review

2011 ◽  
Vol 89 (9) ◽  
pp. 1609-1624 ◽  
Author(s):  
M. Wang ◽  
A. Lawal ◽  
P. Stephenson ◽  
J. Sidders ◽  
C. Ramshaw
Keyword(s):  
Co2 Capture ◽  
State Of The Art ◽  
Chemical Absorption
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