Research on modified calcium based adsorbents for in-situ CO2 capture through pyrolysis

被引：0
|
作者：
Gu, Chun-Han [1 ]
Su, Ming-Xue [1 ]
Li, Ning [1 ]
Zhu, Bing [1 ]
机构：
[1] Hefei Cement &Design Institute Corporation Ltd, Anhui Key Laboratory of Green and Low-Carbon Technology in Cement Manufacturing, Hefei,230022, China
来源：
Zhongguo Huanjing Kexue/China Environmental Science | 2024年 / 44卷 / 08期
关键词：
Carbon capture - Carbon capture and storage - Carbon capture and utilization - Direct air capture - Gas adsorption - Solid wastes - Zero-carbon;
D O I：
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学科分类号：
摘要：
Addressing the challenge of high in-situ adsorption temperature in solid waste pyrolysis, we developed a series of calcium-based solid adsorbents by incorporating various minerals into natural limestone. Experimental investigations on the single adsorption and cyclic adsorption of CO2 by these calcium-based solid adsorbents revealed that the adsorbent doped with 10% montmorillonite exhibited stable cyclic adsorption characteristics and a substantial adsorbent capacity, achieved a maximum CO2 adsorption ratio of 71.52%. Even after 10cycles, the adsorption capacity remained at 43.77%, concurrently elevated the heat value of pyrolysis gas to 14kJ/g. Consequently, the calcium-based adsorbents doped with 10% montmorillonite demonstrated effective CO2 capture and contribute to the enhanced calorific value of pyrolysis gas in solid waste co-pyrolysis. © 2024 Chinese Society for Environmental Sciences. All rights reserved.
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页码：4455 / 4461
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