Binding carbon dioxide in mineral form: A critical step towards a zero-emission coal power plant

Lackner, Klaus S.; Butt, Darryl P.; Wendt, C.

doi:10.2172/674674

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…The amount of material to be disposed of is between 50 and 100% by volume more than that originally mined. These volumes are comparable to volumes commonly handled in mining operations and are subject to standard mine reclamation practice (Lackner et al, 1997;Newall et al, 2000). The fine grinding of the mineral ore might allow for the extraction of valuable mineral constituents.…”

Section: Product Handling and Disposalmentioning

confidence: 90%

Carbon Dioxide Capture and Storage

Nakao

Xue

2014

Materials and Energy

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This Intergovernmental Panel on Climate Change (IPCC) Special Report provides information for policymakers, scientists and engineers in the field of climate change and reduction of CO2 emissions. It describes sources, capture, transport, and storage of CO2. It also discusses the costs, economic potential, and societal issues of the technology, including public perception and regulatory aspects. Storage options evaluated include geological storage, ocean storage, and mineral carbonation. Notably, the report places CO2 capture and storage in the context of other climate change mitigation options, such as fuel switch, energy efficiency, renewables and nuclear energy.This report shows that the potential of CO2 capture and storage is considerable, and the costs for mitigating climate change can be decreased compared to strategies where only other climate change mitigation options are considered. The importance of future capture and storage of CO2 for mitigating climate change will depend on a number of factors, including financial incentives provided for deployment, and whether the risks of storage can be successfully managed. The volume includes a Summary for Policymakers approved by governments represented in the IPCC, and a Technical Summary.The IPCC Special Report on Carbon Dioxide Capture and Storage provides invaluable information for researchers in environmental science, geology, engineering and the oil and gas sector, policymakers in governments and environmental organizations, and scientists and engineers in industry.We would particularly like to thank Dr. Rajendra Pachauri, Chairman of the IPCC, for his direction and guidance of the IPCC, Dr. Renate Christ, the Secretary of the IPCC and her staff for the support provided, and Professor Ogunlade Davidson and Dr. Bert Metz, the Co-Chairmen of Working Group III, for their leadership of Working Group III through the production of this report.

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Section: Product Handling and Disposalmentioning

confidence: 90%

Carbon Dioxide Capture and Storage

Nakao

Xue

2014

Materials and Energy

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“…Therefore, since carbon dioxide as one of the object gases is necessarily released into atmosphere upon operation of thermal power plants, solving this problem is important. Mineral carbonation as a technology area for carbon dioxide storage is a technology of conversion to stable carbonate minerals by reaction between minerals and carbon dioxide, and has been developed by Goff 1) and Lackner [2][3][4] since an intial study was started in 1990. In the case of coal fly ash produced by the circulating fluidized bed method, chemically stable fixing is possible by reaction with carbon dioxide to form carbonate minerals since large amounts of metal oxides(CaO, MgO) are contained.…”

Section: Introductionmentioning

confidence: 99%

Carbonation Behavior of Lightweight Foamed Concrete Using Coal Fly Ash

Lee¹,

Lee²

2016

J. Korean Ceram. Soc

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The purpose of this study was to prepare lightweight foamed concrete by mixing coal fly ash of circulating fluidized bed combustion(CFBC) with cement, and to develop uses for recycling by analyzing carbonation behavior resulting from a change in conditions for pressurized carbonation. For concrete, CFBC coal fly ash was mixed with Portland cement to the water-binder ratio of 0.5, and aging was applied at room temperature after 3 days of curing at 20 o C, RH 60%. For carbonation, temperature was fixed at 60 o C and time at 1 h in the use of autoclave. Pressures were controlled to be 5 kgf/cm 2 and the supercritical condition of 80 kgf/cm 2 , and gas compositions were employed as CO 2 100% and CO 2 15%+N2 85%. In the characteristics of produced lightweight concrete, the characteristics of lightweight foamed concrete resulting from carbonation reaction were affirmed through rate of weight change, carbonation depth test, air permeability, and processing analysis for the day 28 specimen. Based on these results, it is concluded that the present approach could provide a viable method for mass production of eco-friendly lightweight foamed concrete from CFBC coal fly ash stabilized by carbonation.

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“…La segunda línea de investigación abierta para la fijación de CO 2 a largo plazo está basada en provocar reacciones de carbonatación mediante la inyección de CO 2 en sedimentos (Seifritz, 1990;Lackner et al, 1995Lackner et al, , 1998Lackner, 2003). La carbonatación a partir de la disolución de minerales, principalmente silicatos, es un mecanismo que mimetiza los procesos que regulan de forma natural el ciclo del carbono a largo término (Murray y Wilson, 1997) a través de la ecuación de Urey (1952) en la que se establece el balance general entre carbonatos y silicatos en sistemas geológicos.…”

Section: Introductionunclassified

“…The second strategy for the long-term sequestration of CO 2 is based on inducing carbonation reactions by injecting CO 2 in sediments (Seifritz, 1990;Lackner et al, 1995Lackner et al, , 1998Lackner, 2003). Carbonation from the dissolution of minerals, mainly silicates, is a mechanism that mimics the processes that naturally regulate the long-term carbon cycle (Murray and Wilson, 1997), according to Urey's (1952) equation that establishes the general balance between carbonates and silicates in geological systems:…”

Section: Introductionmentioning

confidence: 99%

Geochemical potentiality of glauconitic shelf sediments for sequestering atmospheric CO2 of anthropogenic origin

Fernández-Bastero

Garcı́a²,

Santos

et al. 2005

Cienc. Mar.

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ResumenEn este estudio se analizó experimentalmente la velocidad de disolución de la glauconita en función del pH. Los resultados se utilizaron para modelar la evolución geoquímica de sedimentos marinos glauconíticos de la plataforma continental, ante una inyección de CO 2 , y estimar las posibilidades y limitaciones para su fijación en forma de minerales a través de reacciones de carbonatación. Los resultados experimentales muestraron como, en condiciones ácidas, la glauconita es ligeramente más soluble que otros silicatos, dando lugar a productos carbonatados más insolubles. El mecanismo de disolución es incongruente a valores de pH muy ácidos y tiende a ser congruente para valores intermedios y neutros. La superficie reactiva disminuye en el curso del proceso como resultado de la formación de un residuo amorfo. Los datos cinéticos se han empleado para modelar las reacciones de carbonatación en sedimentos marinos mediante cálculos especiación-reacción. En el estudio se evidencia que, para el caso de la glauconita, la eficacia en la fijación de CO 2 depende principalmente de dos factores: la propia cinética de disoluciónespeciación del CO 2 en los sedimentos y la cinética de liberación del Fe 2+ . La mayor limitación del proceso de cara a su implementación, es la evolución del pH hacia valores ácidos. Los resultados sugieren que, a mediano plazo, este proceso podría ser optimizado de forma técnica modificando la respuesta de neutralización de los sedimentos mediante la inyección de agentes alcalinizantes y con una selección adecuada, tanto del modo de inyección como de la composición de los sedimentos y de las zonas diagenéticas más favorables.Palabras clave: disolución de glauconita, baño de flujo continuo, fijación de CO 2 , reacciones de carbonatación, modelos especiación-reacción. AbstractAn experimental analysis was made of the glauconite dissolution rate as a function of pH. The results were used to model the geochemical evolution of glauconitic shelf sediments injected with CO 2 and estimate the possibilities and limitations for sequestering CO 2 in the form of minerals through carbonation reactions. The experimental results show how, under acidic conditions, glauconite is slightly more soluble than other silicates, producing more insoluble carbonated products. The dissolution mechanism is incongruent at very acidic pH values and tends to be congruent at intermediate and neutral values. The reactive surface decreases during the process as a result of the formation of an amorphous residue. Kinetic data were used to model the reactions of carbonation in marine sediments using reaction/speciation calculations. This study shows that, in the case of glauconite, the efficiency of CO 2 sequestration depends primarily on two factors: the dissolution/speciation kinetics of CO 2 in sediments and the kinetics of Fe 2+ release. The greatest limitation for the implementation of this process is that pH evolves to more acidic values. The results suggest that, in the medium term, this process could be technically optimiz...

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Binding carbon dioxide in mineral form: A critical step towards a zero-emission coal power plant

Cited by 5 publications

References 8 publications

Carbon Dioxide Capture and Storage

Carbon Dioxide Capture and Storage

Carbonation Behavior of Lightweight Foamed Concrete Using Coal Fly Ash

Geochemical potentiality of glauconitic shelf sediments for sequestering atmospheric CO2 of anthropogenic origin

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