Effect of gas to liquid ratio (G/L), superficial (Us), limestone particle size (d), and height to diameter ratio (H/D) to the capture of CO2 in an AWL reactor

• Main Authors: Villavert, Ricardo T., de Leon, Rizalinda L., Pilario, Karl Ezra S.
• Format: text
• Published: Animo Repository 2011
• Subjects: Carbon sequestration; Carbon dioxide mitigation; Chemical weathering; Chemical Engineering
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/13287
• Institution: De La Salle University

Studies have shown that climate change is caused primarily by increasing carbon dioxide (COz) levels in the atmosphere. Carbon Capture and Storage (CCS) is one of the approaches being taken to address the problem by capturing CO, from large point sources and storing instead of releasing. AWL (Advanced Weathering of Limestone) is an economically promising CCS technology where CO, is absorbed in the mixture of limestone and water to produce an effluent beneficial to the growth of calcifying marine organisms. To augment the gap in previous studies, this research determined the effect of Gas to Liquid Ratio (G/L.), superficial velocity (Us), limestone particle size (d), and column height to diameter ratio (H/D) to the capture of CO, in an AWL reactor system. A model based from chemical equilibrium relationships and limestone contactor designs was developed and validated experimentally. The model predicted within the region of low Us, low G/L, high H/D and a low d where COz capture is highest. If AWL is opted as one of the initiatives in climate change mitigation, the optimum conditions obtained in this research can be used as benchmarks in investment analysis such as in reactor fabrication, scale-up, and operational cost.