環境配慮型コンクリート（CCU材料）５

[1098] 飽和炭酸酸溶液を用いた海洋貝殻廃棄物からの炭酸水素カルシウム合成に関する機械化学的アプローチ

オウメイスイ¹, 崔希燮¹, 井上真澄¹, KUROHMAN Novik¹ (1.北見工業大学)

キーワード：Mechanochemical process、Calcium bicarbonate synthesis、Marine shell waste、Stirring methods、Dissolution efficiency

This study investigates the effects of shell powder particle size and stirring methods on the dissolution of calcium carbonate (CaCO3) into calcium bicarbonate (Ca(HCO3)2), focusing on mechanochemical principles. Smaller particle sizes increased dissolution efficiency by providing more reactive sites. Among stirring methods, impact stirring was most effective, followed by rolling and hand shaking. In contrast, the control group with saturated carbonated water alone showed no significant dissolution. These findings underscore the importance of optimizing particle size and stirring methods for efficient mechanochemical processes.