Producing Bio-Calcium Oxide from Chicken Eggshell Waste
Author Information
Author(s): Chuakham Suwanan, Putkham Ajchara I., Chaiyachet Yuwadee, Saengprajak Arnusorn, Banlue Kriangsak, Tanpaiboonkul Nipon, Putkham Apipong
Primary Institution: Mahasarakham University
Hypothesis
This study investigates the factors affecting the production of bio-CaO from hatchery waste via thermal decomposition in a rotary kiln.
Conclusion
The study found that the preparation methods of raw eggshell samples significantly influence the purity and yield of the obtained calcium oxide.
Supporting Evidence
- The production yield of bio-CaO was found to be between 49-56 wt%.
- The purity of bio-CaO was determined to be 97-98%.
- Removing the eggshell membrane did not significantly affect the production yield.
- Calcination in air atmosphere resulted in a preferable white color for the bio-CaO product.
- XRD and XRF analyses confirmed the crystalline nature and high purity of the bio-CaO products.
Takeaway
This research shows that we can make useful calcium oxide from chicken eggshell waste, which is good for the environment and can save money.
Methodology
The study used a laboratory-scale rotary kiln to calcine eggshell waste at 800 °C, examining various preparation methods and calcination atmospheres.
Limitations
The study primarily focused on laboratory-scale experiments, which may not fully represent industrial-scale production.
Digital Object Identifier (DOI)
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