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December 20, 2025Trends in Sciences

Evaluation of Calcium Oxide (CaO) from Oyster Shell Waste: A Sustainable Heat-Generating and Antimicrobial Agent

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Authors

IBI Gusti Ayu BudiadnyaniPSPinky Natalia SamantaFPFenny Crista A. Panjaitan

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Overview

Research reveals calcium oxide's strong exothermic properties and antimicrobial effects against E. coli and S. aureus, indicating its potential in a circular economy.

Key Points

  • The research aims to optimize calcium oxide production from oyster shell waste for sustainable applications.
  • Calcination of oyster shell waste at 750, 900, and 1000 °C
  • Characterization using SEM, XRD, FTIR, and TGA
  • Antibacterial testing using the disc diffusion method against E. coli and S. aureus
  • pH test to determine basicity
  • CaO produced at 1000 °C showed high purity and porous structure
  • Exothermic reaction reached 100 °C in 12 min with ΔH = −64.9 kJ/mol
  • CaO exhibited strong antibacterial activity against E. coli (1.32 mm) and S. aureus (1.36 mm)
  • Research supports a circular economy approach in biogenic waste management

Cite This Study

Budiadnyani et al. (2025) studied this question.

synapsesocial.com/papers/6945e93b5151ab1219e4d7dbhttps://doi.org/10.48048/tis.2026.11055
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Also Consider

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  1. 1Harnessing the potency of eco-friendly calcium oxide derived from eggshells for enhanced photocatalytic activity and biocompatibility evaluation in HepG2 cell line2024 · 2 citations
  2. 2Low-Cost and Eco-Friendly Calcium Oxide Prepared via Thermal Decompositions of Calcium Carbonate and Calcium Acetate Precursors Derived from Waste Oyster Shells2024 · 3 citations
  3. 3Scalable Production of Bio-Calcium Oxide via Thermal Decomposition of Solid - Hatchery Waste in a Laboratory-Scale Rotary Kiln2024
  4. 4Simple Thermal Treatment of Waste Oyster ( <i>Crassostrea belcheri</i>) Shells for the Production of Calcium Minerals in Biomaterials Application2024 · 3 citations
  5. 5Eggshell valorization: membrane removal, calcium oxide synthesis, and biochemical compound recovery towards cleaner productions2025