scholarly journals Magnesium Leachability of Mg-Silicate Peridotites: The Effect on Magnesite Yield of a Mineral Carbonation Process

Minerals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1091
Author(s):  
Muhammad Imran Rashid ◽  
Emad Benhelal ◽  
Faezeh Farhang ◽  
Michael Stockenhuber ◽  
Eric M. Kennedy
Keyword(s):  
Carbonic Acid ◽  
Magnesium Silicate ◽  
Mineral Carbonation ◽  
Acid Dissolution ◽  
Incongruent Dissolution ◽  
Twin Sister ◽  
Carbonation Process ◽  
Congruent Dissolution ◽  
Grinding Conditions ◽  
Feedstock Availability

The aim of this study was to increase feedstock availability for mineral carbonation. Acid dissolution and carbonic acid dissolution approaches were used to achieve higher Mg extractions from peridotites. Acid dissolution studies of raw dunite, heat-activated dunite, heat-transformed dunite, and twin sister dunite have not been reported in the literature. Heat-activated dunite is more reactive as compared to heat-transformed dunite, raw dunite, and twin sister dunite. The fraction of magnesium extracted from heat-activated dunite was 57% as compared to 18% from heat-transformed dunite, 14% from raw dunite, and 11% from twin sister dunite. Similarly, silicon and iron extractions were higher for heat-activated dunite compared to that of heat-transformed dunite, raw dunite, and twin sister dunite. Materials rich in forsterite (twin sister dunite and heat-transformed dunite) showed preferential Mg release and exhibited incongruent dissolution similar to that of forsterite. Heat-activated dunite (amorphous magnesium silicate rich) on the other hand behaved differently and showed congruent dissolution. Olivine did not dissolve under carbonic acid dissolution (with concurrent grinding) and acidic conditions. Under carbonic acid dissolution with concurrent grinding conditions, olivine was partially converted into nanometer sized particles (d10 = 0.08 µm) but still provided 16% Mg extraction during 4 h of dissolution.

scholarly journals MINERAL CARBONATION AS A POTENTIAL CARBON DIOXIDE STORAGE OPTION FOR THE REGION OF WESTERN MACEDONIA, GREECE

2007 ◽  
Vol 40 (2) ◽  
pp. 872
Author(s):  
N. Koukouzas ◽  
H. Ziock ◽  
F. Ziogou ◽  
I. Typou
Keyword(s):  
Carbon Dioxide ◽  
Co2 Emissions ◽  
Power Plants ◽  
Exothermic Reaction ◽  
Magnesium Silicate ◽  
Mineral Carbonation ◽  
Carbon Dioxide Storage ◽  
Carbonation Reaction ◽  
Carbonation Process ◽  
Long Term Storage

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

ACID DISSOLUTION STUDIES USING BRAZILIAN SERPENTINITE ROCKS APPLIED MINERAL CARBONATION

2016 ◽  
Author(s):  
Kely Vieira ◽  
Kely Vieira ◽  
Gretta Larisa Aurora Arce Ferrufino ◽  
Ivonete Ávila ◽  
Carlos Manuel Romero Luna ◽  
...  
Keyword(s):  
Mineral Carbonation ◽  
Acid Dissolution ◽  
Dissolution Studies

scholarly journals Influencing Factors of the Mineral Carbonation Process of Iron Ore Mining Waste in Sequestering Atmospheric Carbon Dioxide

2021 ◽  
Vol 13 (4) ◽  
pp. 1866
Author(s):  
Noor Allesya Alis Ramli ◽  
Faradiella Mohd Kusin ◽  
Verma Loretta M. Molahid
Keyword(s):  
Carbon Dioxide ◽  
Particle Size ◽  
Chemical Composition ◽  
Iron Ore ◽  
Divalent Cations ◽  
Mining Industry ◽  
Mining Waste ◽  
Aluminum Silicate ◽  
Mineral Carbonation ◽  
Carbonation Process

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.

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.

scholarly journals The Assesment for CO2 Sequestration Potential by Magnesium silicate Minerals in Turkey: Cases of Orhaneli-Bursa and Divrigi-Sivas Regions

2008 ◽  
Vol 26 (5) ◽  
pp. 293-309 ◽  
Author(s):  
K. Baris ◽  
A. Ozarslan ◽  
N. Sahin
Keyword(s):  
Co2 Sequestration ◽  
Power Plants ◽  
Thermal Power ◽  
Magnesium Silicate ◽  
Open Pit ◽  
Mineral Carbonation ◽  
Silicate Mineral ◽  
Open Pit Mines ◽  
Silicate Minerals ◽  
Sequestration Potential

This paper examines the CO2 sequestration potential of magnesium silicate minerals in Turkey for two example cases, the Orhaneli-Bursa and Divrigi-Sivas regions. The distribution and properties of the silicate mineral deposits are provided and the quantities of CO2 that can be sequestered in these deposits is estimated. The silicate minerals in the Orhaneli and Divrigi deposits provide significant CO2 sequestration capacity. Assuming 100% mineral carbonation efficiency, approximately 2.4 million tons/year of olivine and 6.5 million tons/year of serpentine would be required to sequester the CO2 released by the power plants investigated in this study. Although more detailed studies are needed, it is concluded that this approach has potential given Turkey's large dunite (olivine) and serpentine reserves. Furthermore, the proximity of these deposits and active open-pit mines to thermal power plants emitting CO2 facilitate the utilization of mineral carbonation.

scholarly journals Potential of Soil, Sludge and Sediment for Mineral Carbonation Process in Selinsing Gold Mine, Malaysia

Minerals ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 257 ◽  
Author(s):  
Sharifah Syed Hasan ◽  
Faradiella Mohd Kusin ◽  
Shamshuddin Jusop ◽  
Ferdius Mohamat Yusuff
Keyword(s):  
Mineral Carbonation ◽  
Gold Mine ◽  
Carbonation Process

Simulating Continuous Counter-Current Leaching Process for Indirect Mineral Carbonation Under Microwave Irradiation

2020 ◽  
Vol 46 (1) ◽  
pp. 123-131
Author(s):  
Zhibo Tong ◽  
Guojun Ma ◽  
Dan Zhou
Keyword(s):  
Calcium Carbonate ◽  
Microwave Irradiation ◽  
Carbon Dioxide Emissions ◽  
Mineral Carbonation ◽  
Calcium Leaching ◽  
Solid Ratio ◽  
Leaching Process ◽  
Carbonation Process ◽  
Counter Current ◽  
Promising Avenue

Mineral carbonation is a promising avenue to realize a deep reduction in carbon dioxide emissions. Though many methods were studied to improve the leaching ratio of mineral leached by ammonium salt, little attention has been received to the problem that the calcium leaching ratio increases while its concentration drops rapidly with the liquid-solid ratio increasing. The continuous counter-current leaching for mineral carbonation process under microwave irradiation is proposed in this study, and the results show that the simulating continuous counter-current leaching process in this article not only is beneficial to improve the leaching ratio and concentration of calcium ions in solution at the same time, but also increases the relative purity of calcium in leached solution. And the produced calcium carbonate products meet the requirements of industrial precipitation of calcium carbonate.

Sign in / Sign up

Export Citation Format

Share Document