| Issue |
E3S Web Conf.
Volume 416, 2023
3rd International Conference on Oil & Gas Engineering and Geological Sciences (OGEGS 2023)
|
|
|---|---|---|
| Article Number | 01001 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/e3sconf/202341601001 | |
| Published online | 10 August 2023 | |
Influence of Humidity on Adsorption Performance of Activated Carbon
Shangdong Nuclear Power Company, Shandong, China
* Corresponding author: hefukai91@163.com
Activated carbon filter is the main equipment used to remove pollutants in the ventilation system in a nuclear power plant. Its main function is to remove radioactive iodine to minimize radioactive hazards against workers in the ventilation area. Periodic evaluation is a key step for verifying its operation effectiveness, further to ensure the safety and long-term operation. In this paper, by changing the micropore structure and surface chemical properties of activated carbon, its physicochemical properties and adsorption performance against methyl iodide under the high humidity working environment are studied. The results show that the adsorption performance of activated carbon on organic compound decreases significantly under the high humidity conditions; however, the combination of potassium iodide, triethylene diamine and functional groups on the activated carbon surface form stable chemical bonds and a new surface structure, which enhances the adsorption performance and stability of activated carbon against pollutants and makes it difficult to remove pollutants. The adsorption capacity of nuclear activated carbon can be restored to 80.7% of the initial capacity, and the adsorption performance can be obviously improved.
Key words: Nuclear activated carbon filter / radioactive iodine / physicochemical properties / microstructure / adsorption efficiency
© The Authors, published by EDP Sciences, 2023
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