scholarly journals AN ANALYSIS OF THE POSSIBLE FINANCIAL SAVINGS OF A CARBON CAPTURE PROCESS THROUGH CARBON DIOXIDE ABSORPTION AND GEOLOGICAL DUMPING

2020 ◽  
Vol 10 (4) ◽  
pp. 266-270
Author(s):  
Ronald Ssebadduka ◽  
Kyuro Sasaki ◽  
Yuichi Sugai
Keyword(s):  
Carbon Dioxide ◽  
Carbon Capture ◽  
Carbon Dioxide Absorption ◽  
Capture Process

Hydrate-Based Carbon Capture Process: Assessment of Various Packed Bed Systems for Boosted Kinetics of Hydrate Formation

2020 ◽  
Vol 143 (3) ◽  
Author(s):  
Amit Arora ◽  
Asheesh Kumar ◽  
Gaurav Bhattacharjee ◽  
Chandrajit Balomajumder ◽  
Pushpendra Kumar
Keyword(s):  
Carbon Dioxide ◽  
Carbon Capture ◽  
Carbon Dioxide Capture ◽  
Fixed Bed ◽  
Hydrate Formation ◽  
Packed Bed ◽  
Fixed Bed Reactor ◽  
Capture Process ◽  
Novel Technologies ◽  
Kinetics Of

Abstract The case for developing novel technologies for carbon dioxide (CO2) capture is fast gaining traction owing to increasing levels of anthropogenic CO2 being emitted into the atmosphere. Here, we have studied the hydrate-based carbon dioxide capture and separation process from a fundamental viewpoint by exploring the use of various packed bed media to enhance the kinetics of hydrate formation using pure CO2 as the hydrate former. We established the fixed bed reactor (FBR) configuration as a superior option over the commonly used stirred tank reactor (STR) setups typically used for hydrate formation studies by showing enhanced hydrate formation kinetics using the former. For the various packing material studied, we have observed silica gel with 100 nm pore size to return the best kinetic performance, corresponding to a water to hydrate conversion of 28 mol% for 3 h of hydrate growth. The fundamental results obtained in the present study set up a solid foundation for follow-up works with a more applied perspective and should be of interest to researchers working in the carbon dioxide capture and storage and gas hydrate fields alike.

scholarly journals Life Cycle Assessment of Synthetic Natural Gas Production from Different CO2 Sources: A Cradle-to-Gate Study

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4579
Author(s):  
Eleonora Bargiacchi ◽  
Nils Thonemann ◽  
Jutta Geldermann ◽  
Marco Antonelli ◽  
Umberto Desideri
Keyword(s):  
Carbon Dioxide ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Carbon Capture ◽  
Carbon Sources ◽  
Electric Energy ◽  
Co2 Concentration ◽  
Gas Production ◽  
Capture Process ◽  
Iron And Steel

Fuel production from hydrogen and carbon dioxide is considered an attractive solution as long-term storage of electric energy and as temporary storage of carbon dioxide. A large variety of CO2 sources are suitable for Carbon Capture Utilization (CCU), and the process energy intensity depends on the separation technology and, ultimately, on the CO2 concentration in the flue gas. Since the carbon capture process emits more CO2 than the expected demand for CO2 utilization, the most sustainable CO2 sources must be selected. This work aimed at modeling a Power-to-Gas (PtG) plant and assessing the most suitable carbon sources from a Life Cycle Assessment (LCA) perspective. The PtG plant was supplied by electricity from a 2030 scenario for Italian electricity generation. The plant impacts were assessed using data from the ecoinvent database version 3.5, for different CO2 sources (e.g., air, cement, iron, and steel plants). A detailed discussion on how to handle multi-functionality was also carried out. The results showed that capturing CO2 from hydrogen production plants and integrated pulp and paper mills led to the lowest impacts concerning all investigated indicators. The choice of how to handle multi-functional activities had a crucial impact on the assessment.

scholarly journals Effect of Physical Properties of Synthesized Protic Ionic Liquid On Carbon Dioxide Absorption Rate

2021 ◽  
Author(s):  
Amita Chaudhary ◽  
Ashok N Bhaskarwar
Keyword(s):  
Carbon Dioxide ◽  
Activation Energy ◽  
Ionic Liquid ◽  
Carbon Capture ◽  
Large Scale ◽  
Climatic Conditions ◽  
Synthesis Process ◽  
Carbon Dioxide Absorption ◽  
Protic Ionic Liquid ◽  
Carbon Dioxide Gas

Abstract Concentration of carbon dioxide gas has accelerated from the last two decades which cause drastic changes in the climatic conditions. In industries, carbon capture plants use volatile organic solvent which causes many environmental threats. So, a low-cost green absorbent has been formulated with nontoxicity and high selectivity properties for absorbing carbon dioxide gas. This paper contains the synthesis process along with the structure confirmation using 1H NMR, 13C NMR, FT-IR, and mass spectroscopy. Density, viscosity, and diffusivity are measured at different ranges with standard instruments. The kinetic studies were also conducted in a standard predefined-interface stirred-cell reactor. The kinetic parameters were calculated at different parameters like agitation speeds, absorption temperature, initial concentrations of ionic liquid, and partial pressure of carbon dioxide. The reaction regime of carbon dioxide absorption is found to be in fast reaction kinetics with pseudo first order. The reaction rate and the activation energy of CO2 absorption are experimentally determined in the range of 299 K to 333K with different initial concentrations of ionic liquid (0.1-1.1 kmol/m3). The second order rate constant and activation energy of carbon dioxide absorption in the synthesized ionic liquid is found to be (6385.93 to 12632.01 m3 mol-1 s-1) and 16.61 kJ mol−1 respectively. This solvent has shown great potential to absorb CO2 at large scale.

scholarly journals Surface-Response Analysis for the Optimization of a Carbon Dioxide Absorption Process Using [hmim][Tf2N]

Processes ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 1063
Author(s):  
Grazia Leonzio ◽  
Edwin Zondervan
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Carbon Capture ◽  
Operating Conditions ◽  
Operating Costs ◽  
Response Analysis ◽  
Green Solvents ◽  
Carbon Dioxide Absorption ◽  
Capital Costs ◽  
Surface Response Analysis

The [hmim][Tf2N] ionic liquid is considered in this work to develop a model in Aspen Plus® capturing carbon dioxide from shifted flue gas through physical absorption. Ionic liquids are innovative and promising green solvents for the capture of carbon dioxide. As an important aspect of this research, optimization is carried out for the carbon capture system through a central composite design: simulation and statistical analysis are combined together. This leads to important results such as the identification of significant factors and their combinations. Surface plots and mathematical models are developed for capital costs, operating costs and removal of carbon dioxide. These models can be used to find optimal operating conditions maximizing the amount of captured carbon dioxide and minimizing total costs: the percentage of carbon dioxide removal is 93.7%, operating costs are 0.66 million €/tonCO2 captured (due to the high costs of ionic liquid), and capital costs are 52.2 €/tonCO2 captured.

scholarly journals Gas Phase Carbon Dioxide as an Optimum Substrate for Isocitrate Dehydrogenase Reaction

2019 ◽  
Vol 93 ◽  
pp. 04002
Author(s):  
Shunxiang Xia ◽  
Enjelia Veony
Keyword(s):  
Carbon Dioxide ◽  
Gas Phase ◽  
Isocitrate Dehydrogenase ◽  
Carbon Capture ◽  
Reaction Rate ◽  
Interfacial Area ◽  
High Energy ◽  
Capture Process ◽  
Carbon Species ◽  
Dehydrogenase Reaction

As biocatalytic carbon capture has attracted wide attraction due to its high energy efficiency, the preference of carbon species of the reaction is concerned. The self-evolution between carbon species makes the determination of preference a changeling issue. In this study, by comparing the isocitrate dehydrogenase reaction rate profiles with pre-equilibrated and un-equilibrated HCO3--CO2 solutions, gas phase carbon dioxide was believed as the optimum substrate, as it can provide higher reaction rate. During the carbon capture process, the partial pressure of the carbon dioxide affected both the reaction equilibrium and kinetics, while the interfacial area can only determine the reaction rate.

Vitamin C as a green high-performance CO2 scrubber

2020 ◽  
Author(s):  
Linda Pastero ◽  
Alessandra Marengo ◽  
Davide Bernasconi ◽  
Guido Scarafia ◽  
Alessandro Pavese
Keyword(s):  
Carbon Dioxide ◽  
Calcium Carbonate ◽  
Vitamin C ◽  
Calcium Oxalate ◽  
Carbon Dioxide Emissions ◽  
Carbon Capture ◽  
High Performance ◽  
Capture Efficiency ◽  
Stability Field ◽  
Capture Process

<p>Carbon dioxide is a greenhouse gas and a natural component of the atmosphere, essential for plant life. Natural reservoirs (oceans, soils, etc.) regulate its geochemical cycle, but the anthropic activity disturbs this balance. In order to control the concentration of carbon dioxide in the atmosphere, many synergic CO<sub>2</sub> capture and sequestration methods (Aresta and Dibenedetto, 2007; Bachu, 2008; Baker et al., 2007; García-España et al., 2004; Lively et al., 2015; Rosa et al., 2018; Stenhouse et al., 2009)coupled with the reduction of carbon dioxide emissions in the atmosphere, have been proposed.</p><p>In an early paper (Pastero et al., 2019), we proposed the ascorbic acid (vitamin C) as a high-performance and green CO<sub>2</sub> scrubber. We hypothesized a red-ox reaction involving calcium ascorbate as the sacrificial reductant. As a result, the reduction of carbon from C(IV) to C(III) leads to the formation of oxalic acid and, in the presence of calcium as the counterion, to the precipitation of calcium oxalate. Calcium oxalate is an almost insoluble salt that doubles the capture efficiency with respect to calcium carbonate. The reaction’s performance in terms of carbon capture efficiency was evaluated under different experimental conditions. Depending on the experimental setup, the yield of the capture and sequestration reaction reaches very high values, up to 80%. The return of the system depends on the total surface exposed to the reaction, the CO<sub>2</sub>/vitamin C mixing mode, the presence of oxygen in the reaction vessel, and the stoichiometry of the solution.</p><p>The products of the reaction are limited to calcium oxalate dihydrate (weddellite), while no monohydrate (whewellite) or trihydrate (caoxite) oxalates were detected. The chemistry of the system was intentionally kept far from the stability field of the carbonates to avoid the co-precipitation of both calcium carbonate and oxalate and, accordingly, the competition between the two phases on the carbon capture process.</p><p>The technological finalization of a carbon capture system exploiting this reaction will trustfully increase further the effectiveness of the method, pointing towards the zero CO<sub>2</sub> emission.</p><p> </p><p>References</p><p>Aresta, M., Dibenedetto, A., 2007.  Dalt. Trans. 0, 2975. https://doi.org/10.1039/b700658f</p><p>Bachu, S., 2008.  Prog. Energy Combust. Sci. https://doi.org/10.1016/j.pecs.2007.10.001</p><p>Baker, J.M., Ochsner, T.E., Venterea, R.T., Griffis, T.J., 2007. Agric. Ecosyst. Environ. https://doi.org/10.1016/j.agee.2006.05.014</p><p>García-España, E., Gaviña, P., Latorre, J., Soriano, C., Verdejo, B., 2004.  J. Am. Chem. Soc. 126, 5082–5083. https://doi.org/10.1021/ja039577h</p><p>Lively, R.P., Sharma, P., Mccool, B.A., Beaudry-Losique, J., Luo, D., Thomas, V.M., Realff, M., Chance, R.R., 2015. Biofuels, Bioprod. Biorefining 9, 72–81. https://doi.org/10.1002/bbb.1505</p><p>Pastero, L., Curetti, N., Ortenzi, M.A., Schiavoni, M., Destefanis, E., Pavese, A., 2019. Sci. Total Environ. 666, 1232–1244. https://doi.org/10.1016/J.SCITOTENV.2019.02.114</p><p>Rosa, G.M. da, Morais, M.G. de, Costa, J.A.V., 2018. Bioresour. Technol. 261, 206–212. https://doi.org/10.1016/j.biortech.2018.04.007</p><p>Stenhouse, M., Arthur, R., Zhou, W., 2009. In: Energy Procedia. pp. 1895–1902. https://doi.org/10.1016/j.egypro.2009.01.247</p>

CO2 Reduction to Propanol by Copper Foams: A Pre- and Post-Catalysis Study

2020 ◽  
Author(s):  
Jennifer A. Rudd ◽  
Ewa Kazimierska ◽  
Louise B. Hamdy ◽  
Odin Bain ◽  
Sunyhik Ahn ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Photoelectron Spectroscopy ◽  
Carbon Capture ◽  
Surface Composition ◽  
Co2 Reduction ◽  
Structural Rearrangement ◽  
Copper Electrode ◽  
Ex Situ ◽  
X Ray ◽  
Copper Electrodes

The utilization of carbon dioxide is a major incentive for the growing field of carbon capture. Carbon dioxide could be an abundant building block to generate higher value products. Herein, we describe the use of porous copper electrodes to catalyze the reduction of carbon dioxide into higher value products such as ethylene, ethanol and, notably, propanol. For <i>n</i>-propanol production, faradaic efficiencies reach 4.93% at -0.83 V <i>vs</i> RHE, with a geometric partial current density of -1.85 mA/cm<sup>2</sup>. We have documented the performance of the catalyst in both pristine and urea-modified foams pre- and post-electrolysis. Before electrolysis, the copper electrode consisted of a mixture of cuboctahedra and dendrites. After 35-minute electrolysis, the cuboctahedra and dendrites have undergone structural rearrangement. Changes in the interaction of urea with the catalyst surface have also been observed. These transformations were characterized <i>ex-situ</i> using scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. We found that alterations in the morphology, crystallinity, and surface composition of the catalyst led to the deactivation of the copper foams.

scholarly journals Investigation into the Re-Arrangement of Copper Foams Pre- and Post-CO2 Electrocatalysis

Chemistry ◽  
2021 ◽  
Vol 3 (3) ◽  
pp. 687-703
Author(s):  
Jennifer A. Rudd ◽  
Sandra Hernandez-Aldave ◽  
Ewa Kazimierska ◽  
Louise B. Hamdy ◽  
Odin J. E. Bain ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Carbon Dioxide ◽  
Carbon Capture ◽  
Surface Composition ◽  
Structural Rearrangement ◽  
Copper Electrode ◽  
Copper Electrodes ◽  
Porous Copper ◽  
Chemical Products ◽  
Co2 Electrolysis

The utilization of carbon dioxide is a major incentive for the growing field of carbon capture. Carbon dioxide could be an abundant building block to generate higher-value chemical products. Herein, we fabricated a porous copper electrode capable of catalyzing the reduction of carbon dioxide into higher-value products, such as ethylene, ethanol and propanol. We investigated the formation of the foams under different conditions, not only analyzing their morphological and crystal structure, but also documenting their performance as a catalyst. In particular, we studied the response of the foams to CO2 electrolysis, including the effect of urea as a potential additive to enhance CO2 catalysis. Before electrolysis, the pristine and urea-modified foam copper electrodes consisted of a mixture of cuboctahedra and dendrites. After 35 min of electrolysis, the cuboctahedra and dendrites underwent structural rearrangement affecting catalysis performance. We found that alterations in the morphology, crystallinity and surface composition of the catalyst were conducive to the deactivation of the copper foams.

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