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Clean coal technology

About: Clean coal technology is a(n) research topic. Over the lifetime, 2397 publication(s) have been published within this topic receiving 44179 citation(s). The topic is also known as: CCT.
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Journal ArticleDOI
25 Sep 2009-Science
TL;DR: Urgent action is required if carbon capture and storage is to play a large role in limiting climate change, and many technological, commercial, and political hurdles remain to be overcome.
Abstract: The capture of carbon dioxide at the point of emission from coal- or gas-burning power plants is an attractive route to reducing carbon dioxide emissions into the atmosphere. To commercialize carbon capture, as well as transport of liquified carbon dioxide and its storage in exploited oil fields or saline formations, many technological, commercial, and political hurdles remain to be overcome. Urgent action is required if carbon capture and storage is to play a large role in limiting climate change.

1,481 citations

Journal ArticleDOI
01 Oct 2003-Energy Policy
Abstract: A study was conducted to compare the electricity generation costs of a number of current commercial technologies with technologies expected to become commercially available within the coming decade or so. The amount of greenhouse gas emissions resulting per kWh of electricity generated were evaluated. A range of fossil fuel alternatives (with and without physical carbon sequestration),were compared with the baseline case of a pulverised coal,steam cycle power plant. Nuclear,hydro,wind,bioenergy and solar generating plants were also evaluated. The objectives were to assess the comparative costs of mitigation per tonne of carbon emissions avoided,and to estimate the total amount of carbon mitigation that could result from the global electricity sector by 2010 and 2020 as a result of fuel switching,carbon dioxide sequestration and the greater uptake of renewable energy. Most technologies showed potential to reduce both generating costs and carbon emission avoidance by 2020 with the exception of solar power and carbon dioxide sequestration. The global electricity industry has potential to reduce its carbon emissions by over 15% by 2020 together with cost saving benefits compared with existing generation. r 2002 Elsevier Science Ltd. All rights reserved.

596 citations

Journal ArticleDOI
01 Oct 2012-Energy
Abstract: Coal-fired thermal power plants are the major source of CO2 emission among fossil fuel power plants. In thermal power plants, coal combustion produces flue gas containing a number of gases including hazardous pollutants, such as CO2, mercury (Hg), sulfur dioxide (SO2), and oxides of nitrogen (NOx). Among all, CO2 is the largest contributor to global warming. CO2 capture and separation are therefore essential to keep the environment safe and secure. The present paper delineates the existing literature to examine the current status of various methods and technologies used for CO2 capture and separation from thermal power plant flue gas. Various emerging technologies like, chemical-looping combustion, integrated gasification combined cycle, enzyme based separation, dual-alkali absorption approach, facilitated transport membrane, hydrate based separations, mixed matrix membrane and, calcium looping are also thoroughly discussed. 2012 Elsevier Ltd. All rights reserved. Increasing CO2 emissions in environment leads to global warming which is an issue of great concern today. The climate of the earth is varying continuously due to various factors, viz., change in the Earth’s orbit, change in the Sun’s intensity, change in ocean currents, volcanic emissions and increase in greenhouse gas (GHG) concentrations. The greenhouse effect is the phenomenon where water vapor, carbon dioxide (CO2), methane and other atmospheric gases absorb outgoing infrared radiation causing an increase of Earth’s temperature [1]. Excessive greenhouse gases in the atmosphere are responsible for various environmental problems like continuous rise of water-level in sea, the increasing number of ocean storms, floods, etc. [2]. Among the GHGs, CO2 is the major contributor for global warming and it has the greatest adverse impact which accounts approximately 55% of the observed global warming. CO2 alone is responsible for about 64% of the enhanced greenhouse effect [3]. According to the prediction of Intergovernmental Panel on Climate Change (IPCC), by the year 2100, the atmosphere may contain up to 570 ppmv of CO2, causing a rise of mean global temperature of around 1.9 � C and an increase in mean sea level of 3.8 m. Currently85%oftotalworlddemandedenergyissuppliedbyfossil fuelthermalpowerplantincluding coal, oilandgas.Fossilfuelpower plants account roughly 40% of total CO2 emission and coal-fired power plant is the main contributor among them [4]. The capture of CO2 from power plant flue gas accounts three quarter of the total cost of carbon capture and storage. It has become an important research issue of global perspectives as more international attention is focused on global warming [5] .T o achieve mid to long term CO 2

538 citations

Journal ArticleDOI
TL;DR: RTILs present a highly versatile and tunable platform for the development of new processes and materials aimed at the capture of CO(2) from power plant flue gas and in natural gas sweetening and new imidazolium-based polymer architectures and thermotropic and lyotropic liquid crystals as highly tailorable materials based on and capable of interacting with RTILs are developed.
Abstract: Clean energy production has become one of the most prominent global issues of the early 21st century, prompting social, economic, and scientific debates regarding energy usage, energy sources, and sustainable energy strategies. The reduction of greenhouse gas emissions, specifically carbon dioxide (CO2), figures prominently in the discussions on the future of global energy policy. Billions of tons of annual CO2 emissions are the direct result of fossil fuel combustion to generate electricity. Producing clean energy from abundant sources such as coal will require a massive infrastructure and highly efficient capture technologies to curb CO2 emissions. Current technologies for CO2 removal from other gases, such as those used in natural gas sweetening, are also capable of capturing CO2 from power plant emissions. Aqueous amine processes are found in the vast majority of natural gas sweetening operations in the United States. However, conventional aqueous amine processes are highly energy intensive; their imp...

525 citations

Journal ArticleDOI
Abstract: A comprehensive, spatially resolved (0.25°×0.25°) fossil fuel consumption database and emissions inventory was constructed, for India, for the first time. Emissions of sulphur dioxide and aerosol chemical constituents were estimated for 1996–1997 and extrapolated to the Indian Ocean Experiment (INDOEX) study period (1998–1999). District level consumption of coal/lignite, petroleum and natural gas in power plants, industrial, transportation and domestic sectors was 9411 PJ, with major contributions from coal (54%) followed by diesel (18%). Emission factors for various pollutants were derived using India specific fuel characteristics and information on combustion/air pollution control technologies for the power and industrial sectors. Domestic and transportation emission factors, appropriate for Indian source characteristics, were compiled from literature. SO2 emissions from fossil fuel combustion for 1996–1997 were 4.0 Tg SO2 yr−1, with 756 large point sources (e.g. utilities, iron and steel, fertilisers, cement, refineries and petrochemicals and non-ferrous metals), accounting for 62%. PM2.5 emitted was 0.5 and 2.0 Tg yr−1 for the 100% and the 50% control scenario, respectively, applied to coal burning in the power and industrial sectors. Coal combustion was the major source of PM2.5 (92%) primarily consisting of fly ash, accounting for 98% of the “inorganic fraction” emissions (difference between PM2.5 and black carbon+organic matter) of 1.6 Tg yr−1. Black carbon emissions were estimated at 0.1 Tg yr−1, with 58% from diesel transport, and organic matter emissions at 0.3 Tg yr−1, with 48% from brick-kilns. Fossil fuel consumption and emissions peaked at the large point industrial sources and 22 cities, with elevated area fluxes in northern and western India. The spatial resolution of this inventory makes it suitable for regional-scale aerosol-climate studies. These results are compared to previous studies and differences discussed. Measurements of emission factors for Indian sources are needed to further refine these estimates.

394 citations

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No. of papers in the topic in previous years

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Topic's top 5 most impactful authors

Calin-Cristian Cormos

17 papers, 670 citations

Klaus S. Lackner

6 papers, 108 citations

Giorgio Cau

4 papers, 15 citations

Michela Vellini

4 papers, 3 citations

V. Prabu

4 papers, 125 citations