Academic literature on the topic 'CaO/CaCO3 cycle'

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Journal articles on the topic "CaO/CaCO3 cycle"

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Toledo Arana, Javier, Juan José Torres, Diego F. Acevedo, Cristian O. Illanes, Nelio A. Ochoa, and Cecilia L. Pagliero. "One-Step Synthesis of CaO-ZnO Efficient Catalyst for Biodiesel Production." International Journal of Chemical Engineering 2019 (March 10, 2019): 1–7. http://dx.doi.org/10.1155/2019/1806017.

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Biodiesel is the best candidate for fuel oil replacement, and to obtain it, heterogeneous catalysts offer large advantages: they can be separated from the product and reused. This work reviews a novel one-step synthesis of CaO-ZnO catalytic particles suitable for biodiesel production. The catalyst is synthesized using an original simple method that involves mixing of ZnO with CaCO3 and subsequent calcination. The CaO-ZnO microparticles obtained present an average size of 2 μm. This material shows the characteristic crystallographic cubic structure of CaO and the hexagonal phase of ZnO. The tem
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Abanades, Juan Carlos. "The maximum capture efficiency of CO2 using a carbonation/calcination cycle of CaO/CaCO3." Chemical Engineering Journal 90, no. 3 (2002): 303–6. http://dx.doi.org/10.1016/s1385-8947(02)00126-2.

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Berstad, David, Rahul Anantharaman, and Kristin Jordal. "Post-combustion CO2 capture from a natural gas combined cycle by CaO/CaCO3 looping." International Journal of Greenhouse Gas Control 11 (November 2012): 25–33. http://dx.doi.org/10.1016/j.ijggc.2012.07.021.

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Wang, Iwei, Shihui Wang, and Zhenshan Li. "Utilizing Limestone Alone for Integrated CO2 Capture and Reverse Water-Gas Reaction in a Fixed Bed Reactor: Employing Mass and Gas Signal Analysis." Processes 12, no. 8 (2024): 1548. http://dx.doi.org/10.3390/pr12081548.

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The integrated CO2 capture and utilization coupled with the reverse water-gas shift reaction (ICCU-RWGS) presents an alternative pathway for converting captured CO2 into CO in situ. This study investigates the effectiveness of three calcium-based materials (natural limestone, sol-gel CaCO3, and commercial CaCO3) as dual-functional materials (DFMs) for the ICCU-RWGS process at intermediate temperatures (650–750 °C). Our approach involves a fixed-bed reactor coupled with mass spectrometry and in situ Fourier transform infrared (FTIR) measurements to examine cyclic CO2 capture behavior, detailed
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Luisetto, Igor, Maria Rita Mancini, Livia Della Seta, et al. "CaO–CaZrO3 Mixed Oxides Prepared by Auto–Combustion for High Temperature CO2 Capture: The Effect of CaO Content on Cycle Stability." Metals 10, no. 6 (2020): 750. http://dx.doi.org/10.3390/met10060750.

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Cycling high temperature CO2 capture using CaO–based solid sorbents, known as the calcium looping (CaL) process, is gaining considerable scientific and industrial interest due to the high theoretical sorbent capacity (0.78 gCO2/gCaO), the low specific cost, and the negligible environmental impact of the employed materials. In this work, we investigated the self–combustion synthesis of CaO–CaZrO3 sorbents with different CaO contents (40, 60, and 80 wt%) for use in the CaL process. CaZrO3 was used as a spacer to avoid CaO grains sintering at high temperature and to reduce the diffusional resista
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Aulia, Tia, Rico Aditia Prahmana, Prihadi Setyo Darmanto, Firman Bagja Juangsa, Raden Dewi Ghita Ghaida Permatasari, and Khoeril Walad. "Estimating the dimensions of integrated calciner and carbonator for calcium looping process in a 7500 TPD capacity of cement plant." Journal of Mechatronics, Electrical Power, and Vehicular Technology 15, no. 2 (2024): 117–25. https://doi.org/10.55981/j.mev.2024.1003.

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The calciner in cement factories plays a crucial role, particularly in the decomposition of calcium carbonate (CaCO3) as primary raw materials into calcium oxide (CaO) and carbon dioxide (CO2), a significant contributor to greenhouse gas (GHG) emissions. Hence, an integrated system has been proposed, combining conventional cement plants with calcium looping (CaL) cycles to reduce CO2 emissions. CaL facilitates the capture of CO2 by CaO, forming CaCO3 as raw material for cement production. Given that CaL effectively reduces CO2 emissions, the integration process with conventional cement plants
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Hadiyanto, Hadiyanto, Sri Puji Lestari, and Widayat Widayat. "Preparation and Characterization of Anadara Granosa Shells and CaCO3 as Heterogeneous Catalyst for Biodiesel Production." Bulletin of Chemical Reaction Engineering & Catalysis 11, no. 1 (2016): 21. http://dx.doi.org/10.9767/bcrec.11.1.402.21-26.

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<p>Nowadays, the use of homogenous catalyst has been gradually reduced for its operational reason. The homogenous catalyst leads in difficulty of separation after the process completed and the life cycle is shorter. Therefore, most of researches are introducing heterogenous catalyst for its substitution. This research was aimed to evaluate the use of shell of Anadara granosa and CaCO3 as source of CaO based catalyst through impregnation method. The preparation of the catalyst was started by decomposition of shells and CaCO3 at temperature of 800 oC for 3 hours, followed by impregnation a
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Widianingsih, Suci, Ika Yanti, Azlan Kamari, and Is Fatimah. "Thermal Conversion of Coral Waste and its Utilization as Low-Cost Catalyst for Biodiesel Production." Science and Technology Indonesia 9, no. 4 (2024): 866–75. http://dx.doi.org/10.26554/sti.2024.9.4.866-875.

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This study investigates the thermal conversion of waste coral and its utilization as a heterogeneous catalyst for biodiesel production from soybean oil. In this work, waste coral is calcined at varied temperatures of 800, 900, and 1000°C, and the effect of the calcination temperature on the physicochemical character of the solid is evaluated through Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and basicity measurement. The results show that the higher temperature facilitates the conversion of CaCO3 of the aragonite and calcite phases in raw waste co
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Fedunik-Hofman, Bayon, and Donne. "Comparative Kinetic Analysis of CaCO3/CaO Reaction System for Energy Storage and Carbon Capture." Applied Sciences 9, no. 21 (2019): 4601. http://dx.doi.org/10.3390/app9214601.

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The calcium carbonate looping cycle is an important reaction system for processes such as thermochemical energy storage and carbon capture technologies, which can be used to lower greenhouse gas emissions associated with the energy industry. Kinetic analysis of the reactions involved (calcination and carbonation) can be used to determine kinetic parameters (activation energy, pre-exponential factor, and the reaction model), which is useful to translate laboratory-scale studies to large-scale reactor conditions. A variety of methods are available and there is a lack of consensus on the kinetic
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Ávila, I., A. Mortari, A. M. Santos, and P. M. Crnkovic. "THE CALCIUM LOOPING CYCLE STUDY FOR CAPTURING CARBON DIOXIDE APPLIED TO THE ENERGY GENERATION." Revista de Engenharia Térmica 12, no. 2 (2013): 28. http://dx.doi.org/10.5380/reterm.v12i2.62041.

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The calcium looping process (Ca-L) is a promising technology to reduce of the carbon dioxide (CO2) emissions when applied in energy generation systems. Ca-based materials (usually limestone) are used in this process as CO2 sorbents. Thus, the CO2 capture occurs by the reversible reaction between calcium oxide (CaO) and CO2, resulting in the calcium carbonate form (CaCO3). Compared to other technologies applied to carbon sequestration process, the Ca-L offers additional advantages such: the use of fluidized bed technology that is already well established; this process occurs at high temperature
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Dissertations / Theses on the topic "CaO/CaCO3 cycle"

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Honoré, Stéphane. "Rôle des intégrines per se dans l'organisation du cytosquelette actinique et la progression du cycle cellulaire dans une lignée d'adénocarcinome colique (Caco-2)." Aix-Marseille 2, 2001. http://theses.univ-amu.fr.lama.univ-amu.fr/PHA_2001_1546.pdf.

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Fernandes, Mariana Vinhas. "Cytotoxicity and Cell Cycle Effects of Gold and Silver Nanoparticles in Human Intestinal Epithelial Caco-2 Cells." Master's thesis, 2014. https://repositorio-aberto.up.pt/handle/10216/76930.

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Fernandes, Mariana Vinhas. "Cytotoxicity and Cell Cycle Effects of Gold and Silver Nanoparticles in Human Intestinal Epithelial Caco-2 Cells." Dissertação, 2014. https://repositorio-aberto.up.pt/handle/10216/76930.

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Stephens, Mark P. "A study of several aspects of the marine carbon cycle 1) sea-air flux of CO₂ in the North Pacific using shipboard and satellite data, 2) chloropigments and labile organic carbon at the equatorial Pacific seafloor, and 3) late Holocene CaCO₃ dissolution from the equatorial Pacific seafloor /." 1996. http://catalog.hathitrust.org/api/volumes/oclc/37356727.html.

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Book chapters on the topic "CaO/CaCO3 cycle"

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Meyer, Julien, Rolf Jarle Aaberg, and Bjørg Andresen. "Generation of Hydrogen Fuels for A Thermal Power Plant with Integrated CO2-Capture Using A CaO-CaCO3 Cycle." In Carbon Dioxide Capture for Storage in Deep Geologic Formations. Elsevier, 2005. http://dx.doi.org/10.1016/b978-008044570-0/50098-2.

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Bianchi, Thomas S. "Carbon Cycle." In Biogeochemistry of Estuaries. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780195160826.003.0023.

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Carbon is the key element of life on Earth and exists in more than a million compounds (Holmén, 2000; Berner, 2004). The unique covalent long-chained and aromatic carbon compounds form the basis of organic chemistry and the “roadmap” for understanding life from the cellular to the ecosystem level. The oxidation states of C atoms range from +IV to −IV; methane (CH4) is the most reduced form of C (−IV), with CO2 and other carbonate forms existing in the most oxidized state (+IV). The major reservoirs of C are stored in the Earth’s crust, with much of it as inorganic carbonate and the remaining a
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Murray, James W. "Major components, salinity and density of seawater." In Aquatic Geochemical Oceanography. Oxford University PressOxford, 2025. https://doi.org/10.1093/9780191853241.003.0007.

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Abstract This chapter describes the major components, salinity and density of seawater. The 11 major components are defined using mass units rather than molar units. Major components have concentrations in seawater greater than 1 ppm. Na+, K+, Cl−, SO42−, Br−, B(OH)3° and F− have constant ratios to salinity and are conservative. Dissolved Ca has small increases in the deep ocean due to CaCO3 dissolution. Mg has anomalies in the deep ocean over mid-ocean ridges. Sr shows a nutrient-like pattern due to a shallow dissolution cycle involving acantharia. HCO3− varies with organic carbon and CaCO3 c
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Conference papers on the topic "CaO/CaCO3 cycle"

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Harvey, J. E., and J. S. Roti. "Handling System Upsets Using High Phosphate Corrosion Inhibitor Programs: New Polymer Technology Reduces Operating Problems." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88021.

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Abstract High phosphate-based cooling water treatment programs have been used extensively throughout industry over the past 8-10 years. Although corrosion protection and deposit control can be achieved at a cost-effective level, a primary drawback of these treatments has been the necessity of very tight system control. Cycles of concentration must be maintained to limit calcium and iron levels in the water, pH must be controlled within acceptable parameters and the concentration of phosphate corrosion inhibitor and deposit control agent must also be tightly controlled in order to achieve low c
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Lorreyte, Clarisse, Hazal Parmaksiz, Bruno Lachmann, et al. "Experimental Study of a Lab Scale Carbonator for CO2 Capture Purpose." In ASME 2024 18th International Conference on Energy Sustainability collocated with the ASME 2024 Heat Transfer Summer Conference and the ASME 2024 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/es2024-130660.

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Abstract Carbon Capture and Utilization (CCU) and Calcium Looping (CaL) have emerged as promising technologies for reducing CO2 emissions, particularly in industries like cement production. The synergy of these processes relies on a reversible chemical reaction involving calcium oxide (CaO), carbon dioxide (CO2), and calcium carbonate (CaCO3). Two reactors, a calciner and a carbonator, facilitate this process, releasing and capturing CO2 from CaCO3 and CaO particles, respectively. This study introduces a lab-scale carbonator designed for CO2 capture within the context of CCU and CaL technologi
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Klimantos, P., N. Koukouzas, and E. Kakaras. "Energy and Exergy Analysis of an IGCC With In-Situ CO2 Capture." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14389.

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Within this study energetic and exergetic theoretical analyses of a novel IGCC power plant concept with CO2 capture are carried out. The core process of the concept examined is based on the high pressure steam gasification of high moisture low grade coals where CO2 is captured reacting exothermically with CaO-based sorbents and high hydrogen-content carbon-free fuel gas is produced without using additional shift reactors and CO2 separation stages. The carbonated sorbents are continuously fed to an oxygen blown calcination reactor where pure CO2 is released and active CaO is reproduced. This co
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Escosa, Jesu´s M., Cristo´bal Cortes, and Luis M. Romeo. "Repowering of Fossil Fuel Power Plants and Reversible Carbonation/Calcination Cycle for CO2 Abatement." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79883.

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Fossil fuel power plants account for about a third of global carbon dioxide emissions. Coal is the major power-generation fuel, being used twice as extensively as natural gas (IEA, 2003). Moreover, on a global scale, coal demand is expected to double over the period to 2030; IEA estimates that 4500 GWe of new installed power will be required. Coal is expected to provide 40% of this figure. It is thus obvious that coal power plants must be operative to provide such amount of energy in the short term, at the same time reducing their CO2 emissions in a feasible manner and increasing their efficie
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Burra, K. G., and A. K. Gupta. "Sorption Enhanced Steam Reforming of Propane Using Calcium Looping." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3621.

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Sorption enhanced steam reforming of propane over Ni catalyst using in-situ carbonation of CaO provides both carbon capture, and enhanced H2 content in the product gas, and enhanced carbon conversion efficiency. Choosing propane over methane for sorption enhanced reforming provides easier fuel handling capability and higher throughput of H2 per unit volume of fuel. Such advantages help in building domestic scale hydrogen production source for sustainable energy production. The effect of propane addition on CaO carbonation and poisoning possibilities in reformation integrated with CO2 capture i
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Li, Wei, Chao Dai, Lei Liu, and Yalou Li. "Optimization Model and PID Temperature Control System Design for CO2 Capture Process by CaO Carbonation-CaCO3 Calcination Cycles." In 2010 Asia-Pacific Power and Energy Engineering Conference. IEEE, 2010. http://dx.doi.org/10.1109/appeec.2010.5448289.

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Ness, Giulia, Ken Stuart Sorbie, Ali Hassan Al Mesmari, and Shehadeh Masalmeh. "The Impact of CCUS for Improved Oil Recovery on CaCO3 Scaling Potential of Produced Fluids." In SPE EuropEC - Europe Energy Conference featured at the 83rd EAGE Annual Conference & Exhibition. SPE, 2022. http://dx.doi.org/10.2118/209676-ms.

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Abstract Unlike other CCUS technologies, CO2 EOR has been widely implemented at a commercial level and on an industrial scale. In CO2 EOR, CO2 can be injected on its own or alternated with water in CO2 WAG (water-alternating-gas). Both applications have a direct impact on produced fluid compositions influencing GOR, water cut, CO2 concentration and consequently Ca2+, alkalinity and pH. The variation of fluid compositions has an inevitable impact on the scaling potential of produced fluids and on the resulting level of scale formation and its mitigation strategy. The aim of this work is to inve
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Senthoorselvan, Sivalingam, Stephan Gleis, Spliethoff Hartmut, Patrik Yrjas, and Mikko Hupa. "Cyclic Carbonation and Calcination Studies of Limestone and Dolomite for CO2 Separation From Combustion Flue Gases." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50987.

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Naturally occurring limestone and dolomite samples, originating from different geographical locations, were tested as potential sorbents for carbonation/calcination based CO2 capture from combustion flue gases. Samples have been studied in a thermo gravimetric analyzer under a simulated flue gas conditions at three calcination temperatures, viz., 750°C, 875°C and 930°C for four Carbonation Calcination Reaction (CCR) cycles. The dolomite sample exhibited the highest rate of carbonation than the tested limestones. At 3rd cycle, its CO2 capture capacity per kg of sample was nearly equal to that o
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Agofack, Nicolaine, Hoang Nguyen Hoang, Pierre Cerasi, Anna Stroisz, and Marcel Naumann. "Effect of Supercritical CO2 and Thermal Loading Cycles on Class G Well Cement Properties." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0439.

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ABSTRACT In carbon dioxide (CO2) capture and storage (CCS) technology, one of the goals is to prevent the injected CO2 from leaking back into the atmosphere. The leakage paths include fractures on the cement sheath sealing the injection well and/or reactivated faults going through the caprock. During a batch-wise injection of CO2, the wellbore is submitted to thermal loading cycles. After injection, the near-well materials, including cement sheath, are exposed to a CO2-rich environment, especially in the vicinity of the reservoir. These thermal cycles (TC) and exposure environment can affect t
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Gaudenyi, Tivadar. "LOESS OF SERBIA—FROM PALEOCLIMATE TO WINEYARDS." In Book of Abstracts and Contributed Papers. Geographical Institute "Jovan Cvijić" SASA, 2024. http://dx.doi.org/10.46793/csge5.05tg.

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Loess is a buff colored, clastic sedimentary rocky of eolian origin without stratification and laminations where the silt particles predominates (beside clay and sand). Gentle lithification with carbonate bonds makes them highly sensitive to water impacts which dissolute this rock. Its vertical breaking made steep slopes. Loess in the sedimentary record deposits are not homogenous sediments, but most contain paleosols or sand horizons which we denominated loess series or loess-paleosol sequences. In Serbia loess series are the most widespread eolian sediments on which the high quality chernoze
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