| 要旨 |
Marine waste is abundant in CaCO3 and can be converted into CaO through calcination. Scallops, oysters, and clam shells from Hokkaido, Japan, were chosen for their abundance. The traditional calcination practice of seashells often involves uncontrolled heating at excessively high temperatures, leading to high energy consumption and CO2 emissions. This study aims to reduce energy consumption by identifying an optimal calcination temperature that avoids overheating, thereby minimizing environmental impact. XRD and TG-DTA confirmed the complete conversion of CaCO3 to CaO, while FT-IR indicated functional group changes, and NMR identified the crystalline forms of uncalcined CaCO2. |