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Citation: Lei Shu, Zhengqing Hao, Kai Yan, Hong Wang, Lihua Zhu, Fang Chen, Nan Wang. Development of a Double-Carbon Related Experiment: Preparation, Characterization and Carbon-Capture Ability of Eggshell-Derived CaO[J]. University Chemistry, ;2024, 39(4): 149-156. doi: 10.3866/PKU.DXHX202310134 shu

Development of a Double-Carbon Related Experiment: Preparation, Characterization and Carbon-Capture Ability of Eggshell-Derived CaO

School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Corresponding author: Nan Wang, nwang@hust.edu.cn
Received Date: 31 October 2023
Revised Date: 29 December 2023

The carbon capture technology is an important way for achieving the “Double Carbon” goal. Calcium-based absorbents are more suitable for the capture of CO₂ from high-temperature industrial sources. Based on the context of the “Double Carbon”, this work integrated cutting-edge carbon capture technology into instrumental analysis experimental course, and developed a designing and comprehensive experiment about “preparation, characterization and carbon-capture ability of eggshell-derived CaO”. Waste eggshells was selected as the calcium source, then pre-treatment with acetic acid yielded calcium acetate, which was calcined at high temperatures to produce CaO with good carbon capture ability. The purity, morphology, structure, and CO₂capture ability of as-prepared CaO were tested using various analysis methods such as EDTA compleximetry titration, scanning electron microscopy, X-ray diffraction, infrared spectroscopy, Raman spectroscopy, and thermogravimetric analysis. This experiment adopts a project-based teaching approach, which guides students to independently design experimental plans, conduct practical work, and summarize their findings. It not only enhances students’ ability to comprehensively apply professional knowledge to solve practical problems, but also cultivates their scientific research literacy and teamwork spirit.
- Double carbon,
- Instrumental analysis experiment,
- Eggshell,
- CaO,
- Carbon capture
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