Real-time investigation of the CO2 mineral carbonation reaction rate through direct aqueous route using semi-dry desulfurization slag

2021 ◽  
Vol 51 ◽  
pp. 101614
Author(s):  
Yi Du ◽  
Changqing Fu ◽  
Bengen Gong ◽  
Endong Miao ◽  
Xufan Zheng ◽  
...  
Keyword(s):  
Real Time ◽  
Reaction Rate ◽  
Mineral Carbonation ◽  
Carbonation Reaction

scholarly journals Testing and Validating Instruments for Feedstocks of Mineral Carbonation

2021 ◽  
Author(s):  
Muhammad Imran Rashid
Keyword(s):  
Reaction Mechanism ◽  
Reaction Rate ◽  
Ex Situ ◽  
Mineral Carbonation ◽  
Good Match ◽  
Carbonation Reaction ◽  
Calibration Curves ◽  
Measuring Techniques ◽  
Fundamental Research ◽  
Heat Activation

Different feedstocks Dunite, Olivine and Lizardite are examined in this research using various measuring techniques such as TGA-MS, XRD and Quantitative XRD and EDS. Quantitative XRD results matched with TGA-MS results. Malvern Mastersizer, EDS and QXRD results also showed a good match regarding the individuality of results which are shown graphically. TGA-MS calibration curves example is provided. Matching the results of different measuring techniques is a key to fundamental research. Comparison of the reactivity of dunite, soaked dunite, heat-activated dunite and lizardite and raw dunite soaked has been performed. TGA-MS and QXRD results match each other. Malvern Mastersizer, EDS and QXRD results match with their individual results indicating the instrument’s reliability. Semi-Quantitative XRD results authenticity is EXCELLENT. TGA-MS results match with QXRD is excellent. Mineral carbonation converts CO2 into stable mineral carbonates. This research explores the utilisation of serpentinised dunite (which is comprised of 61% lizardite) as a potential feedstock for mineral carbonation. Heat activation, ex-situ regrinding and concurrent grinding techniques were employed to enhance the reaction rate and yield, and to provide information on the carbonation reaction mechanism. Silica-rich layers that appeared during reference experiments were disrupted using concurrent grinding and significantly higher magnesite yields and Mg extractions were obtained.

scholarly journals Mineral carbonation process of carbon dioxide using animal bone

2021 ◽  
Vol 104 (2) ◽  
pp. 003685042110196
Author(s):  
Brendon Mpofu ◽  
Hembe E Mukaya ◽  
Diakanua B Nkazi
Keyword(s):  
Carbon Dioxide ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Economic Feasibility ◽  
Mineral Carbonation ◽  
Agitation Rate ◽  
Carbonation Reaction ◽  
Carbonation Process ◽  
The Cost ◽  
Cow Bone

Carbon dioxide has been identified as one of the greenhouse gases responsible for global warming. Several carbon capture and storage technologies have been developed to mitigate the large quantities of carbon dioxide released into the atmosphere, but these are quite expensive and not easy to implement. Thus, this research analyses the technical and economic feasibility of using calcium leached from cow bone to capture and store carbon dioxide through the mineral carbonation process. The capturing process of carbon dioxide was successful using the proposed technique of leaching calcium from cow shinbone (the tibia) in the presence of HCl by reacting the calcium solution with gaseous carbon dioxide. AAS and XRF analysis were used to determine the concentration of calcium in leached solutions and the composition of calcium in cow bone respectively. The best leaching conditions were found to be 4 mole/L HCl and leaching time of 6 h. Under these conditions, a leaching efficiency of 91% and a calcium conversion of 83% in the carbonation reaction were obtained. Other factors such as carbonation time, agitation rate, and carbonation reaction temperature had little effect on the yield. A preliminary cost analysis showed that the cost to capture 1 ton of CO2 with the proposed technique is about US$ 268.32, which is in the acceptable range of the capturing process. However, the cost of material used and electricity should be reviewed to reduce the preliminary production cost.

Real-time investigation of reaction rate and mineral phase modifications of lime carbonation

2012 ◽  
Vol 35 ◽  
pp. 741-751 ◽  
Author(s):  
Özlem Cizer ◽  
Koen Van Balen ◽  
Jan Elsen ◽  
Dionys Van Gemert
Keyword(s):  
Real Time ◽  
Reaction Rate ◽  
Mineral Phase

scholarly journals Recent developments and perspectives on the treatment of industrial wastes by mineral carbonation — a review

2013 ◽  
Vol 3 (4) ◽  
Author(s):  
Marius Bodor ◽  
Rafael Santos ◽  
Tom Gerven ◽  
Maria Vlad
Keyword(s):  
Structural Integrity ◽  
Waste Treatment ◽  
Construction Materials ◽  
Industrial Sector ◽  
Industrial Wastes ◽  
Laboratory Research ◽  
Stable Form ◽  
Mineral Carbonation ◽  
Precipitated Calcium Carbonate ◽  
Carbonation Reaction

AbstractBesides producing a substantial portion of anthropogenic CO2 emissions, the industrial sector also generates significant quantities of solid residues. Mineral carbonation of alkaline wastes enables the combination of these two by-products, increasing the sustainability of industrial activities. On top of sequestering CO2 in geochemically stable form, mineral carbonation of waste materials also brings benefits such as stabilization of leaching, basicity and structural integrity, enabling further valorization of the residues, either via reduced waste treatment or landfilling costs, or via the production of marketable products. This paper reviews the current state-of-the-art of this technology and the latest developments in this field. Focus is given to the beneficial effects of mineral carbonation when applied to metallurgical slags, incineration ashes, mining tailings, asbestos containing materials, red mud, and oil shale processing residues. Efforts to intensify the carbonation reaction rate and improve the mineral conversion via process intensification routes, such as the application of ultrasound, hot-stage processing and integrated reactor technologies, are described. Valorization opportunities closest to making the transition from laboratory research to commercial reality, particularly in the form of shaped construction materials and precipitated calcium carbonate, are highlighted. Lastly, the context of mineral carbonation among the range of CCS options is discussed.

scholarly journals Ultrasensitive and real-time detection of chemical reaction rate based on the photonic spin Hall effect

APL Photonics ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 016105 ◽  
Author(s):  
Ruisi Wang ◽  
Junxiao Zhou ◽  
Kuiming Zeng ◽  
Shizhen Chen ◽  
Xiaohui Ling ◽  
...  
Keyword(s):  
Hall Effect ◽  
Real Time ◽  
Chemical Reaction ◽  
Reaction Rate ◽  
Spin Hall Effect ◽  
Chemical Reaction Rate ◽  
Real Time Detection

Some Insights on the Role of Relative Humidity and Compaction on the Carbonation Rate of CaO/SiO2 (50/50) Clinker

2016 ◽  
Vol 711 ◽  
pp. 837-843
Author(s):  
Marco Agnelli ◽  
Bruno Huet ◽  
Vincent Briaud ◽  
Elodie André ◽  
Alexander Pisch
Keyword(s):  
Relative Humidity ◽  
Reaction Rate ◽  
Mass Gain ◽  
Testing Procedure ◽  
Phase Assemblage ◽  
Carbonation Reaction ◽  
Curing Conditions ◽  
The Relationship ◽  
Mineralogical Assemblage

This paper focuses on the carbonation of non-hydraulic binders based primarily on wollastonite (CaSiO3) in order to study the relationship between clinker composition, curing conditions and compaction on carbonation reaction rate. Decoupled carbonation and drying experiments are carried out using cements at different CaO/SiO2 ratio, at 60 °C, 1 bar of CO2 and multiple RH (relative humidity) and compaction degrees. Solid analysis include mass gain or loss, TGA, XRF and Carbon/Hydrogen (CH) to determine respectively the bound H2O content, CO2 content and the mineralogical assemblage. Relative humidity strongly influences carbonation intrinsic reaction rate, while compaction seems to be a second order mechanism. Testing procedure can be used to discriminate the reactivity of clinkers with various initial phase assemblage.

scholarly journals Carbon Mineralization by Reaction with Steel-Making Waste: A Review

Processes ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 115 ◽  
Author(s):  
Mohamed Ibrahim ◽  
Muftah El-Naas ◽  
Abdelbaki Benamor ◽  
Saad Al-Sobhi ◽  
Zhien Zhang
Keyword(s):  
Industrial Waste ◽  
Co2 Storage ◽  
Research Work ◽  
Point Sources ◽  
Environmental Stability ◽  
Future Research ◽  
Mineral Carbonation ◽  
Carbonation Reaction ◽  
Steel Making ◽  
Natural Rock

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.

Sign in / Sign up

Export Citation Format

Share Document