Records with Keyword: Carbon Capture
Showing records 1 to 25 of 49. [First] Page: 1 2 Last
Exploring the Feasibility of Carbon Capture Onboard Ships
Sadi Tavakoli, Gunnar Malm Gamlem, Donghoi Kim, Simon Roussanaly, Rahul Anantharaman, Kevin Kusup Yum, Anders Valland
November 6, 2023 (v1)
Subject: Environment
Keywords: amine, Carbon Capture, Carbon Dioxide, IMO, Maritime
International shipping is crucial for global freight transport, but is mainly based on fossil fuels, leading to significant greenhouse gas (GHG) emissions. Global GHG emissions must peak by 2025 and drop by at least 43% by 2030 to limit global warming within 1.5◦C. This calls for urgent action in all sectors as well as shipping. Scaling up alternative fuels may take too long, considering technical modifications onboard the vessels, as well as fuel production and infrastructure for distribution. Many alternative fuels are also inherently dependent on access to clean electricity, which is already in a shortage. Carbon capture from ships is another route to emission reduction that can be implemented faster and without increasing the demand for renewable electricity.
Tankers, dry bulk carriers, and container vessels contribute a majority of global shipping emissions and are therefore prime candidates for carbon capture and storage. Solvent-based post-combustion capture is mature and suita... [more]
Experimental Development of Calcium Looping Carbon Capture Processes: An Overview of Opportunities and Challenges
Rubens C. Toledo, Gretta L. A. F. Arce, João A. Carvalho Jr, Ivonete Ávila
May 23, 2023 (v1)
Keywords: bibliometric analysis, calcium looping, Carbon Capture, fluidized bed, scientific gaps
Global warming might be mitigated if emissions were interrupted through carbon capture technologies, as there is a significant amount of comprehensive studies on them. An outline of the main gaps and trends of a technology is critical for further development. In this context, this study provides an overview of calcium looping carbon capture processes that have proven their potential and commercial viability. A bibliometric analysis is conducted on both Scopus and Web of Science database by seeking the keywords “calcium looping”, “co2 capture”, and “fluidized bed” in titles, abstracts, and keywords. Word selection was based on a list of relevant papers on the topic. These items of data have been processed and analyzed based on the number of publications and citations by emphasizing recent publication evolution, journal influence, the use of specific keywords, and co-citation. Results reveal that the European Union (EU) leads the rankings on the topic, followed by Canada. Keyword choice... [more]
The Review of Carbon Capture-Storage Technologies and Developing Fuel Cells for Enhancing Utilization
Nehil Shreyash, Muskan Sonker, Sushant Bajpai, Saurabh Kr Tiwary, Mohd Ashhar Khan, Subham Raj, Tushar Sharma, Susham Biswas
April 24, 2023 (v1)
Keywords: Artificial Intelligence, Carbon Capture, CO2 combustion, electrochemical conversion, fuel cell, storage and utilization
The amount of CO2 released in the atmosphere has been at a continuous surge in the last decade, and in order to protect the environment from global warming, it is necessary to employ techniques like carbon capture. Developing technologies like Carbon Capture Utilization and Storage aims at mitigating the CO2 content from the air we breathe and has garnered immense research attention. In this review, the authors have aimed to discuss the various technologies that are being used to capture the CO2 from the atmosphere, store it and further utilize it. For utilization, researchers have developed alternatives to make profits from CO2 by converting it into an asset. The development of newer fuel cells that consume CO2 in exchange for electrical power to drive the industries and produce valuable hydrocarbons in the form of fuel has paved the path for more research in the field of carbon utilization. The primary focus on the article is to inspect the environmental and economic feasibility of n... [more]
CO2 Capture from Flue Gas of a Coal-Fired Power Plant Using Three-Bed PSA Process
Chu-Yun Cheng, Chia-Chen Kuo, Ming-Wei Yang, Zong-Yu Zhuang, Po-Wei Lin, Yi-Fang Chen, Hong-Sung Yang, Cheng-Tung Chou
April 20, 2023 (v1)
Keywords: breakthrough curve, Carbon Capture, flue gas, pressure swing adsorption, zeolite 13X
The pressure swing adsorption (PSA) process was used to capture carbon dioxide (CO2) from the flue gas of a coal-fired power plant to reduce CO2 emissions. Herein, CO2 was captured from flue gas using the PSA process for at least 85 vol% CO2 purity and with the other exit stream from the process of more than 90 vol% N2 purity. The extended Langmuir−Freundlich isotherm was used for calculating the equilibrium adsorption capacity, and the linear driving force model was used to describe the gas adsorption kinetics. We compared the results of breakthrough curves obtained through experiments and simulations to verify the accuracy of the mass transfer coefficient. The flue gas obtained after desulphurization and water removal (13.5 vol% CO2 and 86.5 vol% N2) from a subcritical 1-kW coal-fired power plant served as the feed for the designed three-bed, nine-step PSA process. To determine optimal operating conditions for the process, the central composite design (CCD) was used. After CCD analys... [more]
Immobilising Microalgae and Cyanobacteria as Biocomposites: New Opportunities to Intensify Algae Biotechnology and Bioprocessing
Gary S. Caldwell, Pichaya In-na, Rachel Hart, Elliot Sharp, Assia Stefanova, Matthew Pickersgill, Matthew Walker, Matthew Unthank, Justin Perry, Jonathan G. M. Lee
April 19, 2023 (v1)
Keywords: bioreactor, Carbon Capture, Carbon Dioxide, eutrophication, immobilization, latex polymers, Process Intensification, Wastewater
There is a groundswell of interest in applying phototrophic microorganisms, specifically microalgae and cyanobacteria, for biotechnology and ecosystem service applications. However, there are inherent challenges associated with conventional routes to their deployment (using ponds, raceways and photobioreactors) which are synonymous with suspension cultivation techniques. Cultivation as biofilms partly ameliorates these issues; however, based on the principles of process intensification, by taking a step beyond biofilms and exploiting nature inspired artificial cell immobilisation, new opportunities become available, particularly for applications requiring extensive deployment periods (e.g., carbon capture and wastewater bioremediation). We explore the rationale for, and approaches to immobilised cultivation, in particular the application of latex-based polymer immobilisation as living biocomposites. We discuss how biocomposites can be optimised at the design stage based on mass transfe... [more]
SPEAR (Solar Pyrolysis Energy Access Reactor): Theoretical Design and Evaluation of a Small-Scale Low-Cost Pyrolysis Unit for Implementation in Rural Communities
Cesare Caputo, Ondřej Mašek
April 19, 2023 (v1)
Keywords: biochar, bioenergy, Carbon Capture, concentrated solar power, solar pyrolysis
Energy access and waste management are two of the most pressing developmental and environmental issues on a global level to help mitigate the accelerating impacts of climate change. They are particularly relevant in Sub−Saharan Africa where electrification rates are significantly below global averages and rural areas are lacking a formal waste management sector. This paper explores the potential of integrating solar energy into a biomass pyrolysis unit as a potentially synergetic solution to both issues. The full design of a slow pyrolysis batch reactor targeted at biochar production, following a strict cost minimization approach, is presented in light of the relevant considerations. SPEAR is powered using a Cassegrain optics parabolic dish system, integrated into the reactor via a manual tracking system and optically optimized with a Monte-Carlo ray tracing methodology. The design approach employed has led to the development an overall cost efficient system, with the potential to achi... [more]
Oxy-Fuel Combustion of Hard Coal, Wheat Straw, and Solid Recovered Fuel in a 200 kWth Calcium Looping CFB Calciner
Joseba Moreno, Matthias Hornberger, Max Schmid, Günter Scheffknecht
April 19, 2023 (v1)
Keywords: biomass combustion, Carbon Capture, co-firing, fluidized bed combustion, oxy-fuel combustion, SRF combustion
The fluidized bed combustion (FBC) of biomass and solid recovered fuel (SRF) is globally emerging as a viable solution to achieve net-negative carbon emissions in the heat and power sector. Contrary to conventional fossil fuels, alternative fuels are highly heterogeneous, and usually contain increased amounts of alkaline metals and chlorine. Hence, experimental studies are mandatory in order to thoroughly characterize the combustion behavior and pollutant formation of non-conventional fuels in novel applications. This work gives an overview of experimental investigations on the oxy-fuel combustion of hard coal, wheat straw, and SRF with a limestone bed in a semi-industrial circulating fluidized bed (CFB) pilot plant. The CFB combustor was able to be operated under different fuel blending ratios and inlet O2 concentrations, showing a stable hydrodynamic behavior over many hours of continuous operation. The boundary conditions introduced in this study are expected to prevail in carbon ca... [more]
Attitudes on Carbon Capture and Storage (CCS) as a Mitigation Technology within the UNFCCC
Katherine Romanak, Mathias Fridahl, Tim Dixon
April 13, 2023 (v1)
Keywords: BECCS, Carbon Capture, CCS, CCUS, DAC, DACCS, mitigation, negative emissions, NETs, side-events, UNFCCC
Carbon Capture and Storage (CCS) is a technology for mitigating emissions from large point-source industries. In addition to the primary role of reducing carbon dioxide (CO2) in the atmosphere, CCS forms the basis for two large-scale negative emissions technologies by coupling geologic CO2 storage with bioenergy (BECCS) and direct air carbon capture (DACCS). Despite its inclusion within the United Nations Framework Convention on Climate Change (UNFCCC), CCS has been largely unsupported by UNFCCC delegates because of its association with fossil fuels. We evaluate data from surveys given since 2015 to UNFCCC delegates at the Conference of the Parties (COPs) to ascertain how attitudes about bioenergy, BECCS, and CCS may be changing within the UNFCCC. The results show a positive change in attitudes over time for both fossil CCS and BECCS. Using a unique data analysis method, we ascertain that, in some instances, popularity of BECCS increased due to an increased acceptance of CCS despite lo... [more]
Climate Policy Imbalance in the Energy Sector: Time to Focus on the Value of CO2 Utilization
Pavel Tcvetkov
April 13, 2023 (v1)
Subject: Energy Policy
Keywords: Carbon Capture, carbon storage, carbon tax, carbon utilization, climate change adaptation, climate change mitigation, climate policy, CO2 costs, energy sector, hydrocarbons, value of CO2 utilization
Global warming is an existential threat to humanity and the rapid energy transition, which is required, will be the defining social, political and technical challenge of the 21st century. Practical experience and research results of recent years have showed that our actions to cover the gap between real situation and aims of climate agreements are not enough and that improvements in climate policy are needed, primarily in the energy sector. It is becoming increasingly clear that hydrocarbon resources, which production volume is increasing annually, will remain a significant part of the global fuel balance in the foreseeable future. Taking this into account, the main problem of the current climate policy is a limited portfolio of technologies, focused on replacement of hydrocarbon resources with renewable energy, without proper attention to an alternative ways of decreasing carbon intensity, such as carbon sequestration options. This study shows the need to review the existing climate p... [more]
Connecting Fiscal Decentralization with Climate Change Mitigation in China: Directions for Carbon Capturing Systems
Tao Deng, Mohammed Arshad Khan, Moin Uddin, Ahsanuddin Haider
April 11, 2023 (v1)
Keywords: Carbon Capture, carbon emission, China, climate change mitigation, fiscal decentralization
The research aims to assess the relationship between fiscal decentralization and climate change mitigation to warrant the direction for the carbon-capturing systems of China. The study estimated the results of China and applied unit root test, cointegration analysis, CS-ARDL test, and robustness analysis. The survey results highlighted a significant relationship between the fiscal decentralization index and climate change mitigation. More specifically, the budgetary decentralization index’s economic, governmental, and institutional factors play a substantial role in climate change mitigation in the short run. While governmental factors are found insignificant asein the long run, economic, institutional, and cultural factors revealed a significant connection in the Chinese setting. The results of the study are robust in both long-run and short-run perspectives. The study also presented prudential guidelines for using fiscal decentralization as an environmental tool for climate change mi... [more]
Techno-Economic Assessment of Different Heat Exchangers for CO2 Capture
Solomon Aforkoghene Aromada, Nils Henrik Eldrup, Fredrik Normann, Lars Erik Øi
April 11, 2023 (v1)
Keywords: Aspen HYSYS, capture cost, Carbon Capture, Carbon Dioxide, energy cost, heat exchanger, sensitivity, Simulation
We examined the cost implications of selecting six different types of heat exchangers as the lean/rich heat exchanger in an amine-based CO2 capture process. The difference in total capital cost between different capture plant scenarios due to the different costs of the heat exchangers used as the lean/rich heat exchanger, in each case, is in millions of Euros. The gasketed-plate heat exchanger (G-PHE) saves significant space, and it saves considerable costs. Selecting the G-PHE instead of the shell and tube heat exchangers (STHXs) will save €33 million−€39 million in total capital cost (CAPEX), depending on the type of STHX. About €43 million and €2 million in total installed costs (CAPEX) can be saved if the G-PHE is selected instead of the finned double-pipe heat exchanger (FDP-HX) or welded-plate heat exchanger, respectively. The savings in total annual cost is also in millions of Euros/year. Capture costs of €5/tCO2−€6/tCO2 can be saved by replacing conventional STHXs with the G-PH... [more]
Study on the Coupling Effect of a Solar-Coal Unit Thermodynamic System with Carbon Capture
Jixuan Wang, Wensheng Liu, Xin Meng, Xiaozhen Liu, Yanfeng Gao, Zuodong Yu, Yakai Bai, Xin Yang
April 3, 2023 (v1)
Keywords: Carbon Capture, exergetic cost, flue gas heat, parabolic trough collector field, structural theory, thermo-economic cost
Based on the structural theory of thermo-economics, a 600 MW unit was taken as an example. An integration system which uses fuel gas heat and solar energy as a heat source for post-combustion carbon capture was proposed. The physical structure sketch and productive structure sketch were drawn and a thermo-economics model and cost model based on the definition of fuel-product were established. The production relation between units was analyzed, and the composition and distribution of the exergy cost and thermo-economic cost of each unit were studied. Additionally, the influence of the fuel price and equipment investment cost of the thermo-economic cost for each product was studied. The results showed that the main factors affecting the unit cost are the fuel exergy cost, component exergy efficiency, and irreversible exergy cost of each unit, and the main factors affecting the thermo-economics cost are the specific irreversible exergy cost and investment exergy cost. The main factors aff... [more]
Study on Mineral Compositions of Direct Carbonated Steel Slag by QXRD, TG, FTIR, and XPS
Xue Wang, Wen Ni, Jiajie Li, Siqi Zhang, Keqing Li
March 28, 2023 (v1)
Keywords: Carbon Capture, gypsum, orthogonal test design, steel slag, UCS, XPS
Steel slag CO2 sequestration helps mitigate global warming and decrease the stockpile of steel slag (SS). Through orthogonal design tests and single-factor tests, this paper evaluated the effects of the water/solid mass ratio (w/s), gypsum ratio (G/SS), molding pressure, and curing duration on uniaxial compressive strength (UCS) and CO2 uptake of the compacts. The results indicated that high w/s enhanced both strength and CO2 capture ability. The proper addition of gypsum helps promote UCS increase and CO2 uptake of steel slag. In addition, increasing the molding pressure can significantly improve UCS without reducing CO2 uptake. The optimum conditions in the study were a w/s of 0.20, G/SS of 1/16, and molding pressure of 27 MPa, under which conditions 1 d UCS and CO2 uptake were 55.30 MPa and 12.36%, respectively. Microanalyses showed that gypsum activates mainly mayenite in steel slag. An increase in water addition also increased the hydration and carbonation products greatly, and th... [more]
Application of the Thermodynamic Cycle to Assess the Energy Efficiency of Amine-Based Absorption of Carbon Capture
Yaofeng Xu, Shuai Deng, Li Zhao, Xiangzhou Yuan, Jianxin Fu, Shuangjun Li, Yawen Liang, Junyao Wang, Jun Zhao
March 21, 2023 (v1)
Keywords: amine-based absorption, Carbon Capture, COPCO2, regeneration heat, second-law efficiency, thermodynamic cycle
The thermodynamic cycle, as a significant tool derived from equilibrium, could provide a reasonable and rapid energy profile of complicated energy systems. Such a function could strongly promote an in-depth and direct understanding of the energy conversion mechanism of cutting-edge industrial systems, e.g., carbon capture system (CCS) However, such applications of thermodynamics theory have not been widely accepted in the carbon capture sector, which may be one of the reasons why intensive energy consumption still obstructs large-scale commercialization of CCS. In this paper, a kind of thermodynamic cycle was developed as a tool to estimate the lowest regeneration heat (Qre) of a benchmark solvent (MEA) under typical conditions. Moreover, COPCO2, a new assessment indicator, was proposed firstly for energy-efficiency performance analysis of such a kind of CCS system. In addition to regeneration heat and second-law efficiency (η2nd), the developed COPCO2 was also integrated into the exis... [more]
Carbon Capture for CO2 Emission Reduction in the Cement Industry in Germany
Peter Markewitz, Li Zhao, Maximilian Ryssel, Gkiokchan Moumin, Yuan Wang, Christian Sattler, Martin Robinius, Detlef Stolten
March 21, 2023 (v1)
Keywords: Carbon Capture, cement plant, CO2 emissions reduction, MEA absorption
The share of global CO2 emissions deriving from the cement industry is about 5%. More than 50% of these are process-related and cannot be avoided. This paper addresses the application of CO2 capture technology to the cement industry. Analyses focusing on post-combustion technology for cement plants are carried out on the basis of detailed model calculations. Different heat supply variants for the regeneration of loaded wash solution were investigated. CO2 avoidance costs are in a range of 77 to 115 EUR/tCO2. The achievable CO2 avoidance rate for the investigated cases was determined to be 70% to 90%. CO2 reduction potentials were identified using CCS technology, focusing on the German cement industry as a case study. The results show that adopting carbon capture technology could lead to a significant reduction in CO2 emissions.
Evaluation of Mathematical Models for CO2 Frost Formation in a Cryogenic Moving Bed
David Cann, Carolina Font-Palma
March 17, 2023 (v1)
Keywords: Carbon Capture, cryogenic separation, desublimation, moving bed heat exchanger (MBHE)
Moving bed heat exchangers (MBHE)s are used in industrial applications including waste heat recovery and the drying of solids. As a result, energy balance models have been developed to simulate the heat transfer between a moving bed and the gas phase. Within these energy balance models, phase change of components within the gas phase has not been considered as the liquefaction or desublimation of the gas phase does not occur in typical industrial applications. However, available energy balance models for cryogenic CO2 capture (CCC) have only focused on fixed packed beds. The development of a suitable energy balance model to predict the energy duties for MBHEs that include phase change would be beneficial for CCC applications. This work investigated the development of moving bed energy balance models for the design of moving bed columns that involve phase change of CO2 into frost, using existing models for MBHEs and fixed-bed CCC capture. The models were evaluated by comparison with ava... [more]
Assessment on the Application of Facilitated Transport Membranes in Cement Plants for CO2 Capture
Maria-Chiara Ferrari, Antonio Amelio, Giuseppe Marino Nardelli, Riccardo Costi
March 10, 2023 (v1)
Keywords: Carbon Capture, cement, facilitated transport, Membranes
Carbon dioxide capture from cement plant flue gas can play an important role in mitigating CO2 emission that lead to climate change. Among all the technologies evaluated, membranes have potential to be one of the most energy-efficient and low-cost CO2 capture option. In this work, a novel membrane technology, Facilitated Transport Membranes (FTMs), is assessed to further reduce energy demand and cost for CO2 capture in a cement plant. A new process that employs FTMs is simulated and applied to a real clinker production plant in Italy (Colacem, Gubbio). The process is then compared with other carbon capture technologies. Results show that the FTM technology can be competitive with other technologies despite the need of steam to operate the membrane. Despite the benefit in terms of specific emission compared to more established absorption with liquid amines process, further improvements on membrane performances are needed to gain also an economic advantage for carbon capture in the cemen... [more]
Adsorption of Carbon Dioxide, Methane, and Nitrogen on Zn(dcpa) Metal-Organic Framework
Rui P. P. L. Ribeiro, Isabel A. A. C. Esteves, José P. B. Mota
March 9, 2023 (v1)
Keywords: Adsorption, biogas, Carbon Capture, framework flexibility, gas storage, MOF, Zn(dcpa)
Adsorption-based processes using metal-organic frameworks (MOFs) are a promising option for carbon dioxide (CO2) capture from flue gases and biogas upgrading to biomethane. Here, the adsorption of CO2, methane (CH4), and nitrogen (N2) on Zn(dcpa) MOF (dcpa (2,6-dichlorophenylacetate)) is reported. The characterization of the MOF by powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), and N2 physisorption at 77 K shows that it is stable up to 650 K, and confirms previous observations suggesting framework flexibility upon exposure to guest molecules. The adsorption equilibrium isotherms of the pure components (CO2, CH4, and N2), measured at 273−323 K, and up to 35 bar, are Langmuirian, except for that of CO2 at 273 K, which exhibits a stepwise shape with hysteresis. The latter is accurately interpreted in terms of the osmotic thermodynamic theory, with further refinement by assuming that the free energy difference between the two metastable structures of Zn(dcpa) is a norma... [more]
How CO2-to-Diesel Technology Could Help Reach Net-Zero Emissions Targets: A Canadian Case Study
Andrew William Ruttinger, Miyuru Kannangara, Jalil Shadbahr, Phil De Luna, Farid Bensebaa
March 7, 2023 (v1)
Keywords: Carbon Capture, CO2-to-diesel, emissions mitigation, levelized cost of carbon abatement, technology learning curves, utilization and storage
Carbon capture, utilization, and storage (CCUS) is an attractive technology for the decarbonization of global energy systems. However, its early development stage makes impact assessment difficult. Moreover, rising popularity in carbon pricing necessitates the development of a methodology for deriving carbon abatement costs that are harmonized with the price of carbon. We develop, using a combined bottom-up analysis and top-down learning curve approach, a levelized cost of carbon abatement (LCCA) model for assessing the true cost of emissions mitigation in CCUS technology under carbon pricing mechanisms. We demonstrate our methodology by adapting three policy scenarios in Canada to explore how the implementation of CO2-to-diesel technologies could economically decarbonize Canada’s transportation sector. With continued policy development, Canada can avoid 932 MtCO2eq by 2075 at an LCCA of CA$209/tCO2eq. Technological learning, low emission hydroelectricity generation, and cost-effective... [more]
Review on Carbon Capture in ICE Driven Transport
Alexander García-Mariaca, Eva Llera-Sastresa
March 7, 2023 (v1)
Keywords: Carbon Capture, CO2 emissions, internal combustion engine, mobile sources, TSA
The transport sector powered by internal combustion engines (ICE) requires novel approaches to achieve near-zero CO2 emissions. In this direction, using CO2 capture and storage (CCS) systems onboard could be a good option. However, CO2 capture in mobile sources is currently challenging due to the operational and space requirements to install a CCS system onboard. This paper presents a systematic review of the CO2 capture in ICE driven transport to know the methods, techniques, and results of the different studies published so far. Subsequently, a case study of a CCS system working in an ICE is presented, where the energy and space needs are evaluated. The review reveals that the most suitable technique for CO2 capture is temperature swing adsorption (TSA). Moreover, the sorbents with better properties for this task are PPN-6-CH2-DETA and MOF-74-Mg. Finally, it shows that it is necessary to supply the energy demand of the CCS system and the option is to take advantage of the waste heat... [more]
Macroeconomic Factors Influencing Public Policy Strategies for Blue and Green Hydrogen
Roberto Fazioli, Francesca Pantaleone
March 6, 2023 (v1)
Subject: Energy Policy
Keywords: blue hydrogen, Carbon Capture, energy transition, green hydrogen, Renewable and Sustainable Energy
The aim of this paper is to analyze the factors affecting hydrogen and Carbon Capture and Storage Technologies (“CCS”) policies, taking into consideration Fossil Fuel Consumption, Oil Reserves, the Debt/GDP Ratio, the Trilemma Index and other variables with respect to OECD countries. STATA 17 was used for the analysis. The results confirm the hypothesis that countries with high fossil fuel consumption and oil reserves are investing in blue hydrogen and CCS towards a “zero-carbon-emission” perspective. Moreover, countries with a good Debt/GDP ratio act most favorably to green policies by raising their Public Debt, because Foreign Direct Investments are negatively correlated with those kinds of policies. Future research should exploit Green Finance policy decision criteria on green and blue hydrogen.
Studies on the CO2 Capture by Coal Fly Ash Zeolites: Process Design and Simulation
Silviya Boycheva, Ivan Marinov, Denitza Zgureva-Filipova
March 3, 2023 (v1)
Keywords: Carbon Capture, coal fly ash zeolites, dynamic process simulation, plant design, thermal-swing adsorption
At present, mitigating carbon emissions from energy production and industrial processes is more relevant than ever to limit climate change. The widespread implementation of carbon capture technologies requires the development of cost-effective and selective adsorbents with high CO2 capture capacity and low thermal recovery. Coal fly ash has been extensively studied as a raw material for the synthesis of low-cost zeolite-like adsorbents for CO2 capture. Laboratory tests for CO2 adsorption onto coal fly ash zeolites (CFAZ) reveal promising results, but detailed computational studies are required to clarify the applicability of these materials as CO2 adsorbents on a pilot and industrial scale. The present study provides results for the validation of a simulation model for the design of adsorption columns for CO2 capture on CFAZ based on the experimental equilibrium and dynamic adsorption on a laboratory scale. The simulations were performed using ProSim DAC dynamic adsorption software to... [more]
Atmospheric Dispersion of Gaseous Amine Emitted from Absorption-Based Carbon Capture Plants in Saskatchewan, Canada
Pet Pakchotanon, Amornvadee Veawab, Adisorn Aroonwilas, Teerawat Sema
March 2, 2023 (v1)
Keywords: air pollution, amine emissions, Carbon Capture, coal-fired power plant, dispersion model
Carbon capture and storage (CCS) is a key strategy to reduce carbon dioxide (CO2) emissions from industrial point sources. Gas absorption into aqueous amine solutions is an immediate technology for carbon capture that has been tested in many demonstration plants. One concern of using the amine-based carbon capture process is the environmental impacts and health risk caused by emissions of gaseous amines from the process to the atmosphere. This work applied the knowledge of air dispersion modelling to map out the atmospheric dispersion and resulting ground surface level concentration of gaseous amine, namely Monoethanolamine (MEA), from a coal-fired power plant (with a carbon capture unit) and in surrounding areas, in case of an accidental leaking of amine from the CCS system to the atmosphere. The chosen study area was centered on a coal-fired power plant in the province of Saskatchewan, Canada. The Environmental Protection (EPA) approved air pollution model (CALPUFF), together with me... [more]
Economic and Environmental Potential of Large-Scale Renewable Synthetic Jet Fuel Production through Integration into a Biomass CHP Plant in Sweden
Anton Fagerström, Omar Abdelaziz, Sofia Poulikidou, Adam Lewrén, Christian Hulteberg, Ola Wallberg, Tomas Rydberg
March 2, 2023 (v1)
Subject: Environment
Keywords: Carbon Capture, electrofuel, life cycle assessment, renewable fuel, sustainable aviation fuel, techno-economic assessment
The potential of bio-electro-jet fuel (BEJF) production with integration into an existing biomass-based combined heat and power (CHP) facility was investigated. The BEJF is produced via Fischer−Tropsch (F−T) synthesis from biogenic CO2 and H2 obtained by water electrolysis. Techno-economic (TEA)- and life. cycle (LCA)- assessments were performed to evaluate the production cost and environmental impact of the BEJF production route. The BEJF mass fraction reached 40% of the total F−T crude produced. A reduction of 78% in heating demands was achieved through energy integration, leading to an increase in the thermal efficiency by up to 39%, based on the F−T crude. The total production cost of BEJF was in the range of EUR 1.6−2.5/liter (EUR 169−250/MWh). The GWP of the BEJF was estimated to be 19 g CO2-eq per MJ BEJF. The reduction potential in GWP in contrast to the fossil jet baseline fuel varied from 44% to more than 86%. The findings of this study underline the potential of BEJF as a re... [more]
Ship-Based Carbon Capture and Storage: A Supply Chain Feasibility Study
Max Buirma, Jaap Vleugel, Jeroen Pruyn, Vincent Doedée, Dingena Schott
March 2, 2023 (v1)
Keywords: Carbon Capture, feasibility, Liquified Natural Gas, maritime, payback time, Supply Chain
The International Maritime Organisation (IMO) calls for the maritime industry to restrict its CO2 emissions by −40% (IMO2030) and −70% (IMO2050). This paper answered the following research question: “Which technical, economic and emissions-related conditions predominantly determine the feasibility of a conceptual supply chain of liquid CO2 that is captured from the exhaust gases of LNG powered offshore vessels?” The captured CO2 is transported to land where it is utilized by a final customer. The study followed a systems engineering approach. Problem definition was followed by a requirements analysis (technology, emissions, economy and operations), design with scenarios and a case study with realistic vessel deployment, modeling and evaluation. All designs have technical uncertainties and financial risks, but the sale of captured CO2 could be a crucial advantage of the proposed concept over other concepts. The main conclusion is that emission and financial targets (payback time) can be... [more]
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