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<p>Determining hydrated lime (Ca(OH)<sub>2</sub>) content has traditionally relied on acid-bas neutralization methods, using colorimetric indicators to identify the endpoint. However, this approach introduces subjectivity and variability between experimenters, leading to potential errors. In this study, we propose a novel method for estimating Ca(OH)<sub>2</sub> content based on the intrinsic physical property of density. A strong linear correlation (R<sup>2</sup> = 0.9875) was observed between Ca(OH)<sub>2</sub> contents determined by titration and density methods, demonstrating high precision and reliability. This method offers three key advantages: (i) improved accuracy by eliminating reliance on subjective endpoints, (ii) simplified experimental procedures based solely on mass measurement, and (iii) indirect assessment of quicklime quality. Overall, the proposed density-based approach enhances the reproducibility and efficiency of hydrated lime analysis, make it highly applicable for industrial and laboratory use.</p>

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A density-based analytical method for quantifying hydrated lime content derived from waste oyster shells

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月29日

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  • Seokhwi Kim,
  • Sang-Eun Lee

摘要

Determining hydrated lime (Ca(OH)2) content has traditionally relied on acid-bas neutralization methods, using colorimetric indicators to identify the endpoint. However, this approach introduces subjectivity and variability between experimenters, leading to potential errors. In this study, we propose a novel method for estimating Ca(OH)2 content based on the intrinsic physical property of density. A strong linear correlation (R2 = 0.9875) was observed between Ca(OH)2 contents determined by titration and density methods, demonstrating high precision and reliability. This method offers three key advantages: (i) improved accuracy by eliminating reliance on subjective endpoints, (ii) simplified experimental procedures based solely on mass measurement, and (iii) indirect assessment of quicklime quality. Overall, the proposed density-based approach enhances the reproducibility and efficiency of hydrated lime analysis, make it highly applicable for industrial and laboratory use.