Carbon Capture, Utilization, and Storage (CCUS)
Carbon Capture, Utilization, and Storage (CCUS)
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CO₂ Sequestration with Fly Ash
Fly ash, a byproduct of coal combustion, has significant potential for carbon sequestration due to its high calcium (Ca) and magnesium (Mg) content, which can react with CO₂ to form stable carbonate minerals. Our research focuses on optimizing this mineral carbonation process through comprehensive material characterization and experimental analysis. By utilizing techniques such as X-ray fluorescence (XRF), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS), we assess changes in mineral composition and analyze how different operating conditions affect carbonation efficiency.
To evaluate the long-term feasibility of this method, we conduct circular reaction experiments to test the repeatability of fly ash carbonation and its impact on efficiency across multiple cycles. This approach helps determine the durability and effectiveness of fly ash as a CO₂ storage medium. Additionally, we study process optimization strategies to maximize CO₂ capture while minimizing energy consumption, ensuring that fly ash-based mineralization can be implemented at an industrial scale.
Beyond the technical aspects, our research includes an economic assessment to estimate the cost of CO₂ capture using fly ash in coal-fired power plants. We analyze key cost drivers and potential incentives that could enhance the financial viability of this technology. Furthermore, we examine Indonesia’s policies on carbon capture, utilization, and storage (CCUS) to identify regulatory support and propose strategic recommendations for industrial adoption. Our findings aim to advance sustainable CCUS solutions, reducing emissions while repurposing industrial byproducts for environmental benefit.
Lesmana et al. (2024)
NH₄OH and KOH for CO₂ Absorbent
Carbon Capture, Utilization, and Storage (CCUS) is a crucial technology for reducing industrial CO₂ emissions and mitigating climate change. Our research focuses on optimizing CO₂ absorption using ammonium hydroxide (NH₄OH) and potassium hydroxide (KOH) as potential solvents. By conducting controlled experiments, we analyze their absorption kinetics, CO₂ loading capacity, and regeneration energy requirements to identify the most efficient and cost-effective solution.
Through detailed testing under various operating conditions, we evaluate factors such as reaction rate, solvent stability, and energy efficiency in CO₂ capture. Our goal is to develop an optimized absorption system that maximizes CO₂ removal while minimizing energy consumption for solvent regeneration. The findings from this research contribute to advancing CCUS technologies, supporting industrial applications in achieving lower carbon emissions and sustainable operations.
Firah et al. (2024)
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