capture carbon dioxide carbon Articles
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Combined cycles for CO2-capture with high efficiency
The presented paper gives an overview on combined cycles for CO2-capture with high efficiency focussed on processes using a Solid Oxide Fuel Cell (SOFC), because of the air separating ability of the SOFC-membrane. The SOFC-membrane is only permeable for oxygen ions, so the cathode exhaust gas is oxygen depleted air, which should be discharged to the atmosphere after recycling or using the heat ...
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Single solvents, solvent blends, and advanced solvent systems in CO
2capture by absorption: a reviewCO2 capture by absorption requires solvents which can meet performance criteria such as fast absorption rate, high CO2 loading capacity, low regeneration energy, low degradation rate, low corrosiveness, low environmental impact and low solvent cost. The development of a suitable solvent is central for design of decarbonised power plants with minimal energy penalty in a cost–effective and ...
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Greenhouse gas emissions of fossil fuel-fired power plants: current status and reduction potentials, case study of Iran and Canada
In this paper, methodology to estimate GHG emissions from electricity generation sector using Iran as an example was first explained. Then different scenarios to reduce GHG emissions were evaluated for two countries: Canada and Iran. The results demonstrated that there were great potentials for GHG emission reduction in both countries. These potentials were evaluated by introducing eight ...
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The kinetics of carbon dioxide capture by solutions of piperazine and N-methyl piperazine
In this paper, kinetics and mechanism of the reaction between CO2 and piperazine (PZ) or n-methyl piperazine (NMP) in aqueous and alcoholic solutions were investigated using direct stopped-flow technique under a range of temperatures (278, 288 and 298 K). The results show that the reactions follow a single termolecular reaction mechanism and the reaction rate between CO2 and aqueous PZ ...
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Cyclic CO
2capture performance of CaO–based sorbents obtained from various precursorsThe effects of pore morphology and crystal structure of CaO–based sorbents derived from various precursors were investigated to elucidate the property dependence of CaO–based sorbent performance for cyclic CO2 capture. The results indicate that CO2 capture capacity of the first carbonate looping cycle is dependent on the specific surface area of CaO–based sorbents. The carbonation conversions of ...
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Green capitalism: negative carbon and the green power fund
This paper discusses the challenges and opportunities created for the world by the Kyoto protocol and the creation based on international law of a global market for carbon emissions trading, in particular, the significance of the clean development mechanism (CDM). The projects funded by CDM and paid for from the carbon market's funds have already achieved a real impact, they have decreased carbon ...
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A review of non–renewable energy options in Illinois
The State of Illinois has the largest non–renewable (fossil) energy reserves among all the states in the USA. We report our studies on coal, oil and gas energy resources, conversions, consumptions and carbon dioxide sequestration advances in Illinois from the point of view of sustainability in energy and environmental. This includes reserves and characteristics of coal, oil and gas in the ...
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A method for estimating the cost to sequester carbon dioxide by delivering iron to the ocean
The need to find economical methods of CO2 sequestration is now urgent. Ocean iron fertilisation has been suggested as a low cost mitigation option to capture and store carbon. However, previous methods of estimating the cost fail to account for many of the losses and offsets occurring over the storage period. A method for calculating the net carbon stored from iron fertilisation of high nutrient ...
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Transboundary transportation of CO2 associated with carbon capture and storage projects
International legal issues raised by Carbon Capture and Storage (CCS) have received close attention in recent years, including important amendments being made to two international marine environment protection treaties – the global London Protocol 1 and the regional OSPAR Convention2 – to resolve their uncertain legal treatment of CO2 storage into the sub-seabed. To date, however, most published ...
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Exergy analysis of the solar thermochemical cycle for capturing CO2 from air
This paper presents exergy analysis of the novel solar thermochemical cycle for CO2 capture from ambient air. The exergy balance, the degree of the thermodynamic perfection, the influence coefficient and the exergy efficiency are determined for every element of the system. The proposed system has rather low exergy efficiency of 4.8%, mainly owing to the primary purpose of this system to capture ...
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Feasibility Study of Using Brine for Carbon Dioxide Capture
ABSTRACT A laboratory-scale reactor was developed to evaluate the capture of carbon dioxide (CO2) from a gas into a liquid as an approach to control greenhouse gases emitted from fixed sources. CO2 at 5–50% concentrations was passed through a gas-exchange membrane and transferred into liquid media—tap water or simulated brine. When using water, capture efficiencies exceeded 50% and ...
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Evaluation of the simultaneous biogas upgrading and treatment of centrates in a high-rate algal pond through C, N and P mass balances
The simultaneous capture of CO2 from biogas and removal of carbon and nutrients from diluted centrates in a 180 L high-rate algal pond (HRAP) interconnected to a 2.5 L absorption column were evaluated using a C, N and P mass balance approach. The experimental set-up was operated indoors at 75 μE/m2·s for 24 h/d at 20 days of hydraulic retention time for 2 months of steady state, ...
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CO2 Capture from Ambient Air by Crystallization with a Guanidine Sorbent
Carbon capture and storage is an important strategy for stabilizing the increasing concentration of atmospheric CO2 and the global temperature. A possible approach toward reversing this trend and decreasing the atmospheric CO2 concentration is to remove the CO2 directly from air (direct air capture). Herein we report a simple aqueous guanidine sorbent that captures CO2 from ambient air and ...
By SusChem
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Carbon dioxide capture and storage scenarios: a case study of the East Midlands and Yorkshire (UK)
This paper uses quantitative electricity supply scenarios to explore the potential for CO2 storage at locations in the Southern North Sea basin from point sources within a case study region that consists of the East Midlands combined with Yorkshire and Humberside in the UK. The reactions to these scenarios from a variety of stakeholders from the public and private sectors are explored using an ...
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Modelling and simulation of reaction kinetics of carbon dioxide absorption into aqueous ammonia in a wetted wall column
Carbon dioxide accounts for about 80% of all greenhouse gases (GHG) and thus becomes the major source responsible for global warming which is considered as the greatest environmental challenge the world is facing. The post–combustion capture is the main way to lower the emission of existing power plants and future power plants where CO2 is produced during the combustion. Solvent–based ...
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Carbon capture is a mirage for poor nations
The world is witnessing a coal renaissance. While public attention remains focused on the progress of the clean energy sector, a ‘black revolution’ of coal power stations is taking shape in the developing world, in particular in Asia, according to Ottmar Edenhofer, the chief economist at the Potsdam Institute for Climate Impact Research in Germany. At the Our Common Future under ...
By SciDev.Net
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The Chemical Route to a Carbon Dioxide Neutral World
Excessive CO2 emissions in the atmosphere from anthropogenic activity can be divided into point sources and diffuse sources. The capture of CO2 from flue gases of large industrial installations and its conversion into fuels and chemicals with fast catalytic processes seems technically possible. Some emerging technologies are already being demonstrated on an industrial scale. Others are still ...
By SusChem
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Laboratory scale tests of coal-based hydrogen production with CO2 capture in the aspect of clean coal technologies
In the light of continuously increasing oil prices as well as stronger environmental regulations, an important issue becomes finding an alternative to fossil fuels. Scientists agree that hydrogen seems to be an ideal, price-competitive and environment-friendly future energy carrier. One of the most effective methods of hydrogen production is the process of steam gasification of coal to ...
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Carbon dioxide capture: an assessment of plausible ranges
The projections of energy related carbon dioxide (CO2) emissions in the Special Report on Emission Scenarios (SRES) of the Intergovernmental Panel on Climate Change (IPCC) serve as point of departure for an assessment of plausible ranges of CO2 emissions that could be avoided through CO2 capture and storage measures. Scenario and time dependent, sector and fuel specific capture factors are ...
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How Will Carbon Capture, Utilization and Storage (CCUS) Contribute to the Global Temperature Goal of 1.5°C?
Let’s begin: what Carbon Capture, Utilization and Storage is and how it works Carbon Capture, Utilization and Storage (CCUS) consist of a series of technologies to capture carbon (usually as CO2) emitted by various processes, to then either be used or stored in an underground reservoir. Carbon capture can be achieved as part of an industrial process, such as hydrogen, ammonia or ethanol ...
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