Academic literature on the topic 'Mineral carbonation process'
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Journal articles on the topic "Mineral carbonation process"
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Ramli, Noor Allesya Alis, Faradiella Mohd Kusin, and Verma Loretta M. Molahid. "Influencing Factors of the Mineral Carbonation Process of Iron Ore Mining Waste in Sequestering Atmospheric Carbon Dioxide." Sustainability 13, no. 4 (February 9, 2021): 1866. http://dx.doi.org/10.3390/su13041866.
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Mining waste may contain potential minerals that can act as essential feedstock for long-term carbon sequestration through a mineral carbonation process. This study attempts to identify the mineralogical and chemical composition of iron ore mining waste alongside the effects of particle size, temperature, and pH on carbonation efficiency. The samples were found to be alkaline in nature (pH of 6.9–7.5) and contained small-sized particles of clay and silt, thus indicating their suitability for mineral carbonation reactions. Samples were composed of important silicate minerals needed for the formation of carbonates such as wollastonite, anorthite, diopside, perovskite, johannsenite, and magnesium aluminum silicate, and the Fe-bearing mineral magnetite. The presence of Fe2O3 (39.6–62.9%) and CaO (7.2–15.2%) indicated the potential of the waste to sequester carbon dioxide because these oxides are important divalent cations for mineral carbonation. The use of small-sized mine-waste particles enables the enhancement of carbonation efficiency, i.e., particles of <38 µm showed a greater extent of Fe and Ca carbonation efficiency (between 1.6–6.7%) compared to particles of <63 µm (0.9–5.7%) and 75 µm (0.7–6.0%). Increasing the reaction temperature from 80 °C to 150–200 °C resulted in a higher Fe and Ca carbonation efficiency of some samples between 0.9–5.8% and 0.8–4.0%, respectively. The effect of increasing the pH from 8–12 was notably observed in Fe carbonation efficiency of between 0.7–5.9% (pH 12) compared to 0.6–3.3% (pH 8). Ca carbonation efficiency was moderately observed (0.7–5.5%) as with the increasing pH between 8–10. Therefore, it has been evidenced that mineralogical and chemical composition were of great importance for the mineral carbonation process, and that the effects of particle size, pH, and temperature of iron mining waste were influential in determining carbonation efficiency. Findings would be beneficial for sustaining the mining industry while taking into account the issue of waste production in tackling the global carbon emission concerns.
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Prigiobbe, V., M. Hänchen, M. Werner, R. Baciocchi, and M. Mazzotti. "Mineral carbonation process for CO2 sequestration." Energy Procedia 1, no. 1 (February 2009): 4885–90. http://dx.doi.org/10.1016/j.egypro.2009.02.318.
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Santos, Rafael M., and Tom Van Gerven. "Process intensification routes for mineral carbonation*." Greenhouse Gases: Science and Technology 1, no. 4 (September 30, 2011): 287–93. http://dx.doi.org/10.1002/ghg.36.
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Kasina, Monika, Piotr R. Kowalski, and Marek Michalik. "Mineral carbonation of metallurgical slags." Mineralogia 45, no. 1-2 (June 1, 2015): 27–45. http://dx.doi.org/10.1515/mipo-2015-0002.
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Abstract Due to increasing emissions of greenhouse gases into the atmosphere number of methods are being proposed to mitigate the risk of climate change. One of them is mineral carbonation. Blast furnace and steel making slags are co-products of metallurgical processes composed of minerals which represent appropriate source of cations required for mineral carbonation. Experimental studies were performed to determine the potential use of slags in this process. Obtained results indicate that steel making slag can be a useful material in CO2 capture procedures. Slag components dissolved in water are bonded as stable carbonates in the reaction with CO2 from ambient air. In case of blast furnace slag, the reaction is very slow and minerals are resistant to chemical changes. More time is needed for minerals dissolution and release of cations essential for carbonate crystallisation and thus makes blast furnace slags less favourable in comparison with steel making slag.
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Koukouzas, N., H. Ziock, F. Ziogou, and I. Typou. "MINERAL CARBONATION AS A POTENTIAL CARBON DIOXIDE STORAGE OPTION FOR THE REGION OF WESTERN MACEDONIA, GREECE." Bulletin of the Geological Society of Greece 40, no. 2 (January 1, 2007): 872. http://dx.doi.org/10.12681/bgsg.16735.
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The long-term storage of the greenhouse gas C02 generated by fossil fuel-fired power plants in the form of stable mineral carbonates appears to be a promising option for reducing global CO2 emissions. In the case of mineral carbonation captured gaseous CO2 is chemically stored in an exothermic reaction by the carbonation of magnesium or calcium silicate minerals, forming environmentally benign and thermodynamically stable products. The purpose of this paper is to give an overview of the carbon dioxide storage by mineral carbonation and to examine the feasibility of this sequestration option in the region of Western Macedonia. The main candidate minerals for carbonation and their sequestration capacity are presented. Furthermore, the most promising mineral carbonation process routes as well as the thermodynamics and kinetics of carbonation reaction are addressed, based on a review on the published literature. In Greece abundant magnesium-rich ultramafic rocks exist that probably could support the national CO2 emissions abatement policy. The attractiveness stems from the favourable geographical relationship between large stationary CO2 emission sources and potential magnesium silicate deposits. Thus, a roughly description of the olivine deposits and their quality in the region of Western Macedonia will be provided
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Ibrahim, Mohamed, Muftah El-Naas, Abdelbaki Benamor, Saad Al-Sobhi, and Zhien Zhang. "Carbon Mineralization by Reaction with Steel-Making Waste: A Review." Processes 7, no. 2 (February 24, 2019): 115. http://dx.doi.org/10.3390/pr7020115.
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Carbon capture and sequestration (CCS) is taking the lead as a means for mitigating climate change. It is considered a crucial bridging technology, enabling carbon dioxide (CO2) emissions from fossil fuels to be reduced while the energy transition to renewable sources is taking place. CCS includes a portfolio of technologies that can possibly capture vast amounts of CO2 per year. Mineral carbonation is evolving as a possible candidate to sequester CO2 from medium-sized emissions point sources. It is the only recognized form of permanent CO2 storage with no concerns regarding CO2 leakage. It is based on the principles of natural rock weathering, where the CO2 dissolved in rainwater reacts with alkaline rocks to form carbonate minerals. The active alkaline elements (Ca/Mg) are the fundamental reactants for mineral carbonation reaction. Although the reaction is thermodynamically favored, it takes place over a large time scale. The challenge of mineral carbonation is to offset this limitation by accelerating the carbonation reaction with minimal energy and feedstock consumption. Calcium and magnesium silicates are generally selected for carbonation due to their abundance in nature. Industrial waste residues emerge as an alternative source of carbonation minerals that have higher reactivity than natural minerals; they are also inexpensive and readily available in proximity to CO2 emitters. In addition, the environmental stability of the industrial waste is often enhanced as they undergo carbonation. Recently, direct mineral carbonation has been investigated significantly due to its applicability to CO2 capture and storage. This review outlines the main research work carried out over the last few years on direct mineral carbonation process utilizing steel-making waste, with emphasis on recent research achievements and potentials for future research.
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Kremer, Dario, Simon Etzold, Judith Boldt, Peter Blaum, Klaus M. Hahn, Hermann Wotruba, and Rainer Telle. "Geological Mapping and Characterization of Possible Primary Input Materials for the Mineral Sequestration of Carbon Dioxide in Europe." Minerals 9, no. 8 (August 13, 2019): 485. http://dx.doi.org/10.3390/min9080485.
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This work investigates the possible mineral input materials for the process of mineral sequestration through the carbonation of magnesium or calcium silicates under high pressure and high temperatures in an autoclave. The choice of input materials that are covered by this study represents more than 50% of the global peridotite production. Reaction products are amorphous silica and magnesite or calcite, respectively. Potential sources of magnesium silicate containing materials in Europe have been investigated in regards to their availability and capability for the process and their harmlessness concerning asbestos content. Therefore, characterization by X-ray fluorescence (XRF), X-ray diffraction (XRD), and QEMSCAN® was performed to gather information before the selection of specific material for the mineral sequestration. The objective of the following carbonation is the storage of a maximum amount of CO2 and the utilization of products as pozzolanic material or as fillers for the cement industry, which substantially contributes to anthropogenic CO2 emissions. The characterization of the potential mineral resources for mineral sequestration in Europe with a focus on the forsterite content led to a selection of specific input materials for the carbonation tests. The mineralogical analysis of an Italian olivine sample before and after the carbonation process states the reasons for the performed evaluation. The given data serves as an example of the input material suitability of all the collected mineral samples. Additionally, the possible conversion of natural asbestos occurring in minerals as a side effect of the carbonation process is taken into consideration.
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Du Breuil, Clémence, Louis César-Pasquier, Gregory Dipple, Jean-François Blais, Maria Iliuta, and Guy Mercier. "Mineralogical Transformations of Heated Serpentine and Their Impact on Dissolution during Aqueous-Phase Mineral Carbonation Reaction in Flue Gas Conditions." Minerals 9, no. 11 (November 3, 2019): 680. http://dx.doi.org/10.3390/min9110680.
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Mineral carbonation is known to be among the most efficient ways to reduce the anthropogenic emissions of carbon dioxide. Serpentine minerals (Mg3Si2O5(OH)4), have shown great potential for carbonation. A way to improve yield is to thermally activate serpentine minerals prior to the carbonation reaction. This step is of great importance as it controls Mg2+ leaching, one of the carbonation reaction limiting factors. Previous studies have focused on the optimization of the thermal activation by determining the ideal activation temperature. However, to date, none of these studies have considered the impacts of the thermal activation on the efficiency of the aqueous-phase mineral carbonation at ambient temperature and moderate pressure in flue gas conditions. Several residence times and temperatures of activation have been tested to evaluate their impact on serpentine dissolution in conditions similar to mineral carbonation. The mineralogical composition of the treated solids has been studied using X-ray diffraction coupled with a quantification using the Rietveld refinement method. A novel approach in order to quantify the meta-serpentine formed during dehydroxylation is introduced. The most suitable mineral assemblage for carbonation is found to be a mixture of the different amorphous phases identified. This study highlights the importance of the mineralogical assemblage obtained during the dehydroxylation process and its impact on the magnesium availability during dissolution in the carbonation reaction.
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Ayub, Syifa Afiza, Haylay Tsegab, Omeid Rahmani, and Amin Beiranvand Pour. "Potential for CO2 Mineral Carbonation in the Paleogene Segamat Basalt of Malaysia." Minerals 10, no. 12 (November 24, 2020): 1045. http://dx.doi.org/10.3390/min10121045.
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Geological storage of carbon dioxide (CO2) requires the host rock to have the capacity to permanently store CO2 with minimum post-storage monitoring. Mineral carbonation in geological formations is one of the most promising approaches to CO2 storage as the captured CO2 is converted into stable carbonated minerals (e.g., calcite and magnesite). In this study, we investigated the geochemical and mineralogical characteristics of Segamat basalt in the Central Belt of Malaysia and evaluated its potential for mineral carbonation by using laboratory analyses of X–ray fluorescence (XRF), X–ray diffraction analysis (XRD) and petrographic study. The XRF results showed that Segamat basalt samples contain a number of elements such as Fe (21.81–23.80 wt.%), Ca (15.40–20.83 wt.%), and Mg (3.43–5.36 wt.%) that can react with CO2 to form stable carbonated minerals. The XRD and petrographic results indicated that Segamat basalt contains the reactive mineral groups of pyroxene and olivine, which are suitable for the mineral carbonation process. The results of this study could help to identify the spatial distribution of elements and minerals in the Segamat basalt and to assess its mineral carbonation potential for geological storage in Malaysia.
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Reynes, Javier F., Guy Mercier, Jean-François Blais, and Louis-César Pasquier. "Feasibility of a Mineral Carbonation Technique Using Iron-Silicate Mining Waste by Direct Flue Gas CO2 Capture and Cation Complexation Using 2,2′-Bipyridine." Minerals 11, no. 4 (March 26, 2021): 343. http://dx.doi.org/10.3390/min11040343.
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Mineral carbonation is gaining increasing attention for its ability to sequester CO2. The main challenge is doing it economically and energy-efficiently. Recently, many studies have focused on the aqueous reaction of carbon dioxide with the alkaline earth minerals such as serpentine, Mg-rich olivine and wollastonite. Nevertheless, Fe-rich olivines have been poorly studied because of their high energy demand, which make them unfeasible for industrial implementation. This article describes the feasibility of an indirect mineral carbonation process using silicic, Fe-rich mining waste with direct flue gas CO2 via iron complexation using 2,2′-bipyridine. The overall process was performed in three main steps: leaching, iron complexation, and aqueous mineral carbonation reactions. The preferential parameters resulted in a recirculation scenario, where 38% of Fe cations were leached, complexed, and reacted under mild conditions. CO2 uptake of 57.3% was achieved, obtaining a Fe-rich carbonate. These results are promising for the application of mineral carbonation to reduce CO2 emissions. Furthermore, the greenhouse gas balance had a global vision of the overall reaction’s feasibility. The results showed a positive balance in CO2 removal, with an estimated 130 kg CO2/ton of residue. Although an exhaustive study should be done, the new and innovative mineral carbonation CO2 sequestration approach in this study is promising.
Dissertations / Theses on the topic "Mineral carbonation process"
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Park, Ah-Hyung Alissa. "Carbon dioxide sequestration chemical and physical activation of aqueous carbonation of Mg-bearing minerals and pH swing process /." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1124272324.
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Thesis (Ph. D.)--Ohio State University, 2005.Title from first page of PDF file. Document formatted into pages; contains xx, 176 p.; also includes graphics (some col.). Includes bibliographical references (p. 169-176). Available online via OhioLINK's ETD Center
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Sauerbronn, Wilhelm Malheiros. "Avaliação do potencial mineral de rochas metabásicas e metaultramáficas da faixa Itapira-Amparo para uso em processo de carbonatação mineral no sequestro de CO2 /." Rio Claro : [s.n.], 2008. http://hdl.handle.net/11449/92759.
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Resumo: A redução das emissões de gases de efeito estufa representa um grande desafio tecnológico aos modelos industriais vigentes. Neste sentido, os mecanismos de desenvolvimento limpo (MDL's) e o seqüestro de CO2 fundamentam os planos de crescimento sustentável. Atualmente, inovadoras pesquisas consideram também o seqüestro de CO2 por meio da carbonatação mineral, onde minerais silicáticos ricos em magnésio, cálcio, ferro e manganês são convertidos em carbonatos, por meio de reações com o CO2 em estado supercrítico ou em solução. Nas proximidades do distrito industrial de Paulínia (SP), ocorrem rochas metabásicas e metaultramáficas relacionadas aos Complexos Amparo e Itapira, que representam terrenos metamórficos de grau médio a alto. Nessa área as metabásicas são representadas por anfibolitos, actinolita-xistos e hornblenditos, e são encontradas sob a forma de lentes ou camadas estiradas intercaladas a rochas quartzo-feldspáticas. As metaultramáficas ocorrem em corpos pequenos e descontínuos, muitas vezes de estrutura maciça e composição mineralógica rica em olivina, piroxênio e anfibólio. O potencial destas rochas, em duas áreas selecionadas, foi avaliado para uso em processos de carbonatação mineral, com base em análises petrográficas e litogeoquímicas, fornecendo valores da ordem 73 x 106 toneladas de CO2 seqüestrável.Abstract: Greenhouse effect gas emission reduction has been a great technological challenge to the industrial models standings. Furthermore, the clean development mechanism (CDM) and CO2 sequestration are fundamental on sustainable development in order to reach safer levels of CO2. Nowadays, innovate researchers have also considered the CO2 sequestration by mineral carbonatation, where silicates rich in Mg, Ca and Fe are transformed into carbonates. Nearby to the industrial district of Paulinia (São Paulo), high grade metabasic and ultramaphics rocks of Amparo-Itapira Complex occur. The metamorphic rocks consisting of amphibolites, actinolite-schist and hornblend-rich amphibolite are found intercalated with quartz-feldspatic rocks as lenticular layers. The ultramafic rocks present as discontinuous massive bodies are rich in olivine, pyroxene and amphibole. Carbon sequestrating potential of two selected areas, based on petrographic and litogeochemical analyses are estimated to be capable of capturing approximately 73 x 106 tons of CO2.
Orientador: Maria Rita Caetano Chang
Coorientador: Chang Hung Kiang
Banca: Didier Gastmans
Banca: Luis Tadeu Furlan
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Sauerbronn, Wilhelm Malheiros [UNESP]. "Avaliação do potencial mineral de rochas metabásicas e metaultramáficas da faixa Itapira-Amparo para uso em processo de carbonatação mineral no sequestro de CO2." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/92759.
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A redução das emissões de gases de efeito estufa representa um grande desafio tecnológico aos modelos industriais vigentes. Neste sentido, os mecanismos de desenvolvimento limpo (MDL’s) e o seqüestro de CO2 fundamentam os planos de crescimento sustentável. Atualmente, inovadoras pesquisas consideram também o seqüestro de CO2 por meio da carbonatação mineral, onde minerais silicáticos ricos em magnésio, cálcio, ferro e manganês são convertidos em carbonatos, por meio de reações com o CO2 em estado supercrítico ou em solução. Nas proximidades do distrito industrial de Paulínia (SP), ocorrem rochas metabásicas e metaultramáficas relacionadas aos Complexos Amparo e Itapira, que representam terrenos metamórficos de grau médio a alto. Nessa área as metabásicas são representadas por anfibolitos, actinolita-xistos e hornblenditos, e são encontradas sob a forma de lentes ou camadas estiradas intercaladas a rochas quartzo-feldspáticas. As metaultramáficas ocorrem em corpos pequenos e descontínuos, muitas vezes de estrutura maciça e composição mineralógica rica em olivina, piroxênio e anfibólio. O potencial destas rochas, em duas áreas selecionadas, foi avaliado para uso em processos de carbonatação mineral, com base em análises petrográficas e litogeoquímicas, fornecendo valores da ordem 73 x 106 toneladas de CO2 seqüestrável.
Greenhouse effect gas emission reduction has been a great technological challenge to the industrial models standings. Furthermore, the clean development mechanism (CDM) and CO2 sequestration are fundamental on sustainable development in order to reach safer levels of CO2. Nowadays, innovate researchers have also considered the CO2 sequestration by mineral carbonatation, where silicates rich in Mg, Ca and Fe are transformed into carbonates. Nearby to the industrial district of Paulinia (São Paulo), high grade metabasic and ultramaphics rocks of Amparo-Itapira Complex occur. The metamorphic rocks consisting of amphibolites, actinolite-schist and hornblend-rich amphibolite are found intercalated with quartz-feldspatic rocks as lenticular layers. The ultramafic rocks present as discontinuous massive bodies are rich in olivine, pyroxene and amphibole. Carbon sequestrating potential of two selected areas, based on petrographic and litogeochemical analyses are estimated to be capable of capturing approximately 73 x 106 tons of CO2.
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Vieira, Kely Regina Maximo [UNESP]. "Estudo da reação de dissolução de serpentinitos brasileiros para uso em processo de captura de carbono." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/137863.
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Nesta dissertação, investiga-se a reação de dissolução ácida de rochas silicatos brasileiras visando a aplicação em um processo de captura e sequestro de carbono denominado por Carbonatação Mineral. Na carbonatação mineral pela rota indireta utiliza-se ácidos, bases ou sais de amônia para a extração do magnésio, principalmente, presente na rocha silicato a fim de a formar carbonatos estáveis. Destaca-se que a etapa de dissolução ácida é uma fase limitante para o processo de carbonatação mineral, principalmente por apresentar baixa taxa de reação. O objetivo deste trabalho é utilizar o ácido clorídrico (HCl) e dois serpentinitos oriundos do estado de Goiás e Minas Gerais para avaliar o processo de dissolução ácida. Os serpentinitos foram preparados, selecionados e caracterizados para determinar a composição elementar. Aplicou-se o planejamento experimental e arranjo L9 de Taguchi na avaliação dos fatores que influenciam o processo de dissolução, tais como, temperatura do processo, concentração do HCl, tamanho médio das partículas da matéria prima e excesso de ácido. Os 9 ensaios previstos na matriz de planejamento para cada serpentinito foram executados de forma aleatória e em duplicata. Os produtos finais, resíduo sólido retido no papel filtro e solução contendo os elementos de interesse, foram analisados obtendo-se a composição elementar das soluções. Considerando-se os testes previstos na matriz de planejamento, a condição de melhor ajuste para extração de Mg foi utilizando-se a granulometria média de 69 µm, temperatura de 70°C, HCl 2 M com quatro vezes a quantidade estequiométrica. Nas soluções foram obtidas as concentrações de 29 % e 76 % de Mg para as amostras de serpentinito de Minas Gerais e de Goiás, respectivamente. Foram também avaliadas as melhores condições para extração de Fe e Ca e menor extração de Si, uma vez que o Si diminui a conversão no processo. Na análise estatística verificou-se que para a amostra de Minas Gerais todos os fatores apresentaram significância. No caso da a amostra de Goiás a temperatura no nível alto (70°C) apresentou maior significância.
In this dissertation, acid dissolution reaction of Brazilian silicate rocks was investigated aiming the implementation in a Carbon Capture and Storage process named Mineral Carbonation. In the mineral carbonation by indirect route, acids, bases or salts of ammonia are used for magnesium extraction, mainly, present in the silicate rock in order to form stable carbonates. It is noteworthy that the acid dissolution step is a limiting step in the process of mineral carbonation, mainly because of its low reaction rate. The objective of this study was to use hydrochloric acid (HCl) and two serpentinites from Goiás and Minas Gerais states to evaluate the acid dissolution process. The serpentinites were prepared, selected, and characterized to determine the elemental composition. The L9 experimental design and Taguchi arrangement were applied to evaluate the factors that influence in the dissolution process, such as process temperature, HCl concentration, average particle size of material and acid excess. The nine tests prescribed in planning matrix for each serpentinite were performed at random and in duplicate. The end products, solid residue retained on the filter paper and the solution containing the elements of interest were analyzed obtaining the elemental composition of the solutions. Considering the prevised tests on planning matrix, the best adjust condition for Mg extraction was using the average particle size of 69 µm temperature of 70°C, 2 M HCl with four times the stoichiometric amount. In the solutions, the concentrations obtained were 29 % and 76 % Mg for samples of serpentinite from Minas Gerais and Goiás, respectively. The best conditions for the extraction of Fe and Ca and lower extraction of Si were evaluated, since Si decreases the conversion in the process. In the statistical analysis was found that in Minas Gerais sample all factors were significant. In the case of Goiás sample, the temperature at the high level (70°C) showed greater significance.
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Ghoorah, Manisha. "Investigating the suitability of the weak acid process for carbon dioxide mineralisation." Thesis, 2014. http://hdl.handle.net/1959.13/1051155.
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Research Doctorate - Doctor of Philosophy (PhD)Mineral carbonation represents a potentially suitable CO₂ abatement strategy for a country such as Australia, particularly the state of New South Wales, which is devoid of suitable geological sinks within 500 km from the cluster of coal-fired power stations but possesses ample feedstock, in the form of magnesium silicate deposits, to capture CO₂ over an estimated 300 years. This thesis examines the weak acid process, commonly known as the acetic acid route that basically encompasses the dissolution of wollastonite or serpentinite in a weak acid and subsequently carbonation with concomitant recycling of the acid. The initial phase of the study compares the efficiency of 0.1 M aqueous solutions of acetic, formic and DL-lactic acids as Ca²⁺ leaching agents from wollastonite (volume mean diameter = 17μm between 20 and 80 °C for 3 h. Metal ion analysis of the leachate, afforded on inductively coupled plasma-optical spectroscopy, revealed formic acid as being the most effective at 80 °C, in terms of extraction and rate of dissolution. Experimental calcium yields and solution pH values agree with thermodynamic predictions from OLI Analyzer Studio 3.0. Formic acid registered nearly complete extraction within 20 min, whereas acetic and DL-lactic acids achieved 60-70 % yield in the same lapse of time and temperature. The corresponding rates amount to 26(±7)x10-5, 14(±3)x10-5 and 17(±4)x10-5 mol m⁻² s⁻¹ for formic, acetic and DL-lactic acids, respectively. These results indicate an initial diffusion limitation in the silica layer formed around wollastonite particles for formic acid and a kinetic limitation for the other two acids. Scanning electron microscopic images provide further evidence for the effectiveness of formic acid on the basis of enhanced crazing in the silica layer. Additionally, the extractive process involving formic and acetic acids were modelled with ash/inert layer diffusion control and surface chemical reactions control standard shrinking core models, respectively, but the latter failed to fit experimental data. A modified version that incorporates a ‘variable activation energy’ term accounting for the occurrence of a complex network of reactions as well as varying conversion rates, successfully described dissolution in the weakly acidic media. An order of reaction of 0.45 was found to be the best fit for both cases pointing to mixed order reactions that comprise several elementary reactions. The next stage investigates the dissolution of partially and fully hydrated serpentinite specimens in 0.1 M formic acid at 80 °C Extraction was found to be dependent on particle size and degree of heat activation. Magnesium yields attained 42 % from the -25 μm forsterite-lizardite containing sample activated at 700 °C (29 % residual OH) and 66 % from the fully serpentinised antigorite mineral, which was pulverised to a particle size of -53 μm and conditioned at 720 °C (36 % residual OH). Heat treatment of lizardite and antigorite between 500 and 800 °C engenders the generation of amorphised material, forsterite and silica; enstatite forms from the amorphised material and silica at temperature exceeding 800 °C. Semi-quantitative X-ray diffraction, coupled with Fourier transform infrared spectroscopy, demonstrated that both forsterite and amorphous phases dissolve in the weak acid. However, the growth of amorphous silica formed either during forsterisation at elevated temperature or as a result of magnesium extraction, inhibits further dissolution. The complexity of carbonation in a weakly acidic medium and acid recycling constitute the focus of the last part of this study. The backbone of the acetic acid route consists of the assumption that acetic acid, with a pKa of 4.76 is weak enough to be displaced by carbonic acid (pKa1 6.4) and hence be recycled during carbonate precipitation. However, the thermodynamic framework OLI Studio Analyser 3.2 predicts that acetic acid remains stronger than carbonic acid over a temperature and pressure range of 25-200 °C and 10-200 bar, thus rendering recycling impractical. The pKa1 of carbonic varies, as function of temperature and pressure, between 6.2 and 7.2 while that of acetic acid reaches a maximum value of 5.5 from the initial 4.76. Even though dissolution yields can be maximised by using formic acid, finer particle sizes and heat activation, carbonation is unfeasible owing to the solubility of carbonates in acids. Inducing their precipitation through the addition of a base would impose additional financial burden on the process, unless chemicals are regenerated. The simulation software also shows that dissolution and carbonation of wollastonite in plain water is thermodynamically favourable at elevated, but achievable, temperatures (100 °C) and relatively low pressures (10-30 bar), which could compensate for pH swings.
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"Mineral carbon dioxide sequestration: Enhancing process kinetics and a resource base assessment for minerals suitable for use in enhanced carbonation processes." COLUMBIA UNIVERSITY, 2009. http://pqdtopen.proquest.com/#viewpdf?dispub=3348434.
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(9820127), Shadia Moazzem. "Reduction of CO² emissions in coal-fired power plants for achieving a sustainable environment." Thesis, 2012. https://figshare.com/articles/thesis/Reduction_of_CO_emissions_in_coal-fired_power_plants_for_achieving_a_sustainable_environment/13460243.
Full textBook chapters on the topic "Mineral carbonation process"
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Prentice, Dale, Iman Mehdipour, Gabriel Falzone, Stephen Raab, Dante Simonetti, and Gaurav Sant. "Field Demonstration of the Reversa™ Mineral Carbonation Process Using Coal and Natural Gas Flue Gas Streams." In The Minerals, Metals & Materials Series, 589–94. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92563-5_62.
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Yeo, Tze Yuen, and Jie Bu. "MC Process Scale and Product Applications." In CO2 Sequestration by Ex-Situ Mineral Carbonation, 133–65. WORLD SCIENTIFIC (EUROPE), 2016. http://dx.doi.org/10.1142/9781786341600_0005.
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HANCHEN, M., M. DUSSELDORF, M. MAZZOTTI, T. SEWARD, and G. STORTI. "Kinetic study of silicate dissolution for the mineral carbonation process." In Greenhouse Gas Control Technologies 7, 2411–14. Elsevier, 2005. http://dx.doi.org/10.1016/b978-008044704-9/50343-8.
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Ahn, J. H., K. S. Choi, H. Kim, S. H. Yoon, J. S. Kim, G. W. Sung, and K. H. Lee. "Synthesis of aragonite by the carbonation process using stainless refining dust in iron & Steel plants." In Developments in Mineral Processing, C6–29—C6–35. Elsevier, 2000. http://dx.doi.org/10.1016/s0167-4528(00)80043-5.
Full textConference papers on the topic "Mineral carbonation process"
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Magbitang, Riza A., and Rheo B. Lamorena-Lim. "Mineral carbonation process of rocks from ophiolite complexes during the CO2-purged aqueous solutions exposure." In Annual International Conference on Chemistry, Chemical Engineering and Chemical Process. Global Science & Technology Forum (GSTF), 2013. http://dx.doi.org/10.5176/2301-3761_ccecp.38.
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Zeng, Lingping, Mohammad Sarmadivaleh, Ali Saeedi, Ahmed Al-Yaseri, Claire Dowling, Glen Buick, and Quan Xie. "Thermodynamic Modelling on Wellbore Cement Integrity During Underground Hydrogen Storage in Depleted Gas Reservoirs." In SPE Asia Pacific Oil & Gas Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210639-ms.
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Abstract Objectives/Scope Underground hydrogen storage (UHS) has been raising more interest to safely and cost-effectively store hydrogen at large-scale to help the transition from fossil fuel to sustainable energy and to achieve net-zero emission target. During hydrogen subsurface storage particularly in depleted gas reservoirs, the wellbore plays an important role in injection and reproduction to meet seasonal energy demand. However, it is still unclear how wellbore cement would react with stored hydrogen in the presence of formation brine, which may effect long-term cement integrity. We thus performed thermodynamic modelling on cement reactions with hydrogen and water at reservoirs conditions. Methods, Procedures, Process The dissolution of individual components of cement including C3S, C2S, C3A, C4AF and gypsum of Class G/H, and potential precipitation of twenty secondary minerals were simulated at an infinite time scale at reservoir temperature and pressure (representing the worst case scenario of cement degradation from geochemical perspective; in real case, the degree of cement degradation would be much less than the results from thermodynamic modelling as it is a time-dependent process). The extent of cement mineral reactions with hydrogen was compared with that of methane and carbon dioxide to assess the wellbore cement integrity during UHS compared to UGS and CCS. Results, Observations, Conclusions The cement hydration process would lead to the transformation of the major cement compositions C3S and C2S to C1.5SH (CSH) and portlandite. Adding hydrogen would only slightly change the percentage of C1.5SH and portlandite and generate a small fraction of new mineral mackinawite. As a comparison, adding methane would generate a considerable amount of calcite. When CO2 is involved, all CSH compounds would transform to calcite through the cement carbonation process. Overall, the compositional mineral phases of cement after cement hydration is more closed to the case involving H2 compared to CH4 and CO2, implying a relatively low risk of wellbore cement degradation during UHS. Novel/Additive Information Our work underlines the importance of incorporating geochemical modelling in hydrogen geo-storage evaluation when using existing old wells and new drilled wells.
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Zachary, Justin, and Harvey Wen. "CO2 Sequestration by Conventional and Alternative Means." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22318.
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In the present climate of uncertainty about CO2 emissions legislation, owners and power plant planners are looking into the possibility of accommodating “add-on” CO2 capture and sequestration (CCS) solutions in their current plant designs. The variety of CCS technologies currently under development makes it a very challenging task. Nevertheless, it is evident that the new generation of plants must address the CO2 capture issue. The underground sequestration of CO2 is associated with technical, legal and public acceptance issues. Current demonstration project will require years of operation in order to determine long term impact in the injection process on the environment. Alternative methods are used to convert CO2 into minerals that can be reused or at least stored in a solid form. The paper will review several of these alternative methods, identifying the advantages as well as the associated technical limitations. In addition to chemical or physical methods, the paper will address several other technologies that employ carbonation and algae as means of converting CO2 into a potential reusable material or transportation fuel. Finally the paper will address beyond the technical feasibility the economic and environmental impact of various alternative sequestration methods.
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Tillmann, W., and A. Brinkhoff. "Influence of Spraying Parameters on the Diamond Decomposition of HVOF-sprayed Nickel-Diamond Coatings." In ITSC2018, edited by F. Azarmi, K. Balani, H. Li, T. Eden, K. Shinoda, T. Hussain, F. L. Toma, Y. C. Lau, and J. Veilleux. ASM International, 2018. http://dx.doi.org/10.31399/asm.cp.itsc2018p0799.
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Abstract Diamond is the hardest known material and hence is suitable for a large, diverse field of applications for industrial processing tools. Different types of diamonds are used for these tools. For example, large diamonds are frequently used to industrially process minerals, while fine diamonds are used to process glass or carbon fibre reinforced plastic, as well as for grinding and lapping processes. A major challenge when processing diamonds is the process temperature as diamonds show decomposition effects at higher temperatures. Thermally spraying processes, which have the advantage of having only a small thermal influence on diamonds due to the short dwelling time of the particles in the flame, are going to be investigated as an alternative processing method for diamond-reinforced coatings. Additionally, these processes are flexible regarding the application process of contour accurate coatings. This paper gives an insight into the relationship between spray process parameters and the diamond decomposition concerning the particle temperature during the spraying process. For this purpose, the process parameters are varied and the resulting coatings are characterized, analyzing their influence on the diamonds in the coating. One focus of this paper is the scanning electron microscopical investigation of a thermally induced carbonating of the diamonds.
Reports on the topic "Mineral carbonation process"
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Michael J. McKelvy, Andrew V. G. Chizmeshya, Kyle Squires, Ray W. Carpenter, and Hamdallah Bearat. A Novel Approach To Mineral Carbonation: Enhancing Carbonation While Avoiding Mineral Pretreatment Process Cost. Office of Scientific and Technical Information (OSTI), June 2006. http://dx.doi.org/10.2172/895921.
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Andrew V. G. Chizmeshya, Michael J. McKelvy, Kyle Squires, Ray W. Carpenter, and Hamdallah Bearat. A Novel Approach to Mineral Carbonation: Enhancing Carbonation While Avoiding Mineral Pretreatment Process Cost. Office of Scientific and Technical Information (OSTI), June 2007. http://dx.doi.org/10.2172/924162.
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Michael J. McKelvy, Andrew V.G. Chizmeshya, Kyle Squires, Ray W. Carpenter, and Hamadallah Bearat. A NOVEL APPROACH TO MINERAL CARBONATION: ENHANCING CARBONATION WHILE AVOIDING MINERAL PRETREATMENT PROCESS COST. Office of Scientific and Technical Information (OSTI), October 2005. http://dx.doi.org/10.2172/860811.
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M.J. McKelvy, J. Diefenbacher, R. Nunez, R.W. Carpenter, and A.V.G. Chizmeshya. SIMULTANEOUS MECHANICAL AND HEAT ACTIVATION: A NEW ROUTE TO ENHANCE SERPENTINE CARBONATION REACTIVITY AND LOWER CO2 MINERAL SEQUESTRATION PROCESS COST. Office of Scientific and Technical Information (OSTI), January 2005. http://dx.doi.org/10.2172/840464.
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Rueda Ramos, Laura. ESTUDIO PETROGRÁFICO Y GÉNESIS DE LAS CONCRECIONES CARBONÁTICAS (SEPTARIAS) DE LA CAPA DE MARGAS DE ALCORLO (TURONIENSE MEDIO) EN EL SINCLINAL DE TORTUERO (GUADALAJARA, ESPAÑA). Ilustre Colegio Oficial de Geólogos, July 2022. http://dx.doi.org/10.21028/lrr.2022.07.04.
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Las concreciones carbonáticas de tipo septaria objeto del presente estudio se localizan en las proximidades de Tortuero (Guadalajara), en el flanco noroeste (NO) de un sinclinal tumbado en el límite entre el Dominio nororiental del Sistema Central Español y la Cuenca de Madrid. Las concreciones se encuentran en facies mixtas correspondientes a la Capa de Margas de Alcorlo (Turoniense Medio, Cretácico Superior). Esta unidad pertenece a la Mesosecuencia I del Cretácico Superior y corresponde a un máximo regresivo. La metodología empleada para la caracterización mineral y textural ha permitido inferir un posible modelo genético para explicar el origen de estas concreciones carbonáticas. Las concreciones presentan dos formas: una esferoidal y otra discoidal, con diversos tamaños. En su interior se reconocen dos zonas, una interna caracterizada por la presencia de silt (limo) y carbonato (calcita) y una externa de micrita peloidal microbiana, con porosidad secundaria de tipo shrinkage (septarias). Esta porosidad estáparcialmente rellena de un cemento fibroso de calcita. Se deduce que las concreciones se desarrollaron por debajo de la interfase sedimento-agua en un ambiente palustre asociado a la línea de costa. La interrupción de la sedimentación favoreció el crecimiento concrecionar entorno a un núcleo no determinado/visible a partir de aguas continentales freáticas. El origen de las septarias se relaciona con procesos de deshidratación del sedimento por desecación y cementación posterior, característicos de ambientes palustres.