Synergistic CO2 removal via enhanced olivine weathering and diatom growth in the ocean
ID：281
Poster Presentation
2025-01-16 20:20 （China Standard Time）
Session：Session 33-Ocean Negative Carbon Emissions
Abstract
In this study, we investigated the short-term synergistic CO2 removal effects of an olivine–diatom coculture system by intro-ducing fine-grained olivine powder directly into diatom cultures and observing the biological response. To account for potential
interference from olivine particles in cell counting, we conducted additional experiments in which olivine particles were enclosed within a dialysis bag to explore both the direct and indirect influences of diatom growth on olivine dissolution. We assessed the extent by which growth-mediated uptake of H4SiO4 by diatoms accelerated olivine dissolution. Finally, we evaluated the comprehensive CO2 removal efficiency of the olivine–diatom coculture system through the fixation of organic and inorganic carbon.
interference from olivine particles in cell counting, we conducted additional experiments in which olivine particles were enclosed within a dialysis bag to explore both the direct and indirect influences of diatom growth on olivine dissolution. We assessed the extent by which growth-mediated uptake of H4SiO4 by diatoms accelerated olivine dissolution. Finally, we evaluated the comprehensive CO2 removal efficiency of the olivine–diatom coculture system through the fixation of organic and inorganic carbon.
Keywords
olivine, diatom, negative carbon emission