Mineral carbonation of sedimentary mine waste for carbon sequestration and potential reutilization as cementitious material

Kusin, Faradiella Mohd; Hasan, Shariful; Hassim, Muhammad Afiq; Molahid, Verma Loretta M.

doi:10.1007/s11356-020-07877-3

Cited by 35 publications

(21 citation statements)

References 71 publications

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“…Particle size analysis was performed using dry sieving followed by wet sieving, i.e., the pipette method. The pipette method is considered to be more accurate than dry sieve analysis for sediment-type samples [33]. In dry sieving, particles were sieved until fractions of <2 mm were obtained, before undergoing pipette analysis to determine smaller-sized particle fractions.…”

Section: Ph and Particle Size Distribution Analysismentioning

confidence: 99%

“…At the end of experiment, the carbonation product was drained, filtered, and dried for further analysis using a thermo gravimetric analyzer. The variability of the experimental parameters was based on the experience from our trial experiment [33]. The variables and constant parameters applied throughout the carbonation experiment were designed to identify the conditions appropriate for the carbonation process to occur more effectively, as measured by the carbonation efficiency.…”

Section: Mineral Carbonation Experimentsmentioning

confidence: 99%

“…The variables and constant parameters applied throughout the carbonation experiment were designed to identify the conditions appropriate for the carbonation process to occur more effectively, as measured by the carbonation efficiency. on the experience from our trial experiment [33]. The variables and constant parameters applied throughout the carbonation experiment were designed to identify the conditions appropriate for the carbonation process to occur more effectively, as measured by the carbonation efficiency.…”

Section: Mineral Carbonation Experimentsmentioning

confidence: 99%

“…The concept of this analysis was to introduce the samples to high temperature conditions ranging from 0 °C to 950 °C. Loss of sample weight within the range of 200-450 °C and from 600-850 °C indicate the presence of Fe2CO3 and CaCO3, respectively [33]. The carbonation efficiency was calculated using the equations below.…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

“…The presence of anorthite in the samples was depicted by their flake-like anorthite crystal shapes as identified from the SEM micrographs analysis ( Figure 5). Clearly, the presence of Ca-and Mg-silicate minerals is essential for mineral carbonation and can be useful as a supplementary cementitious material [33].…”

Section: Mineralogical and Chemical Composition Of Mine Wastementioning

confidence: 99%

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

2021

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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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Section: Ph and Particle Size Distribution Analysismentioning

confidence: 99%

Section: Mineral Carbonation Experimentsmentioning

confidence: 99%

Section: Mineral Carbonation Experimentsmentioning

confidence: 99%

Section: Thermogravimetric Analysismentioning

confidence: 99%

Section: Mineralogical and Chemical Composition Of Mine Wastementioning

confidence: 99%

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