基于红色泥的氨基功能化吸附剂的吸附性能用于CO2捕获
Wenjun Liang1, Yan Zhang1, Lan Yang1
1Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing, 100124, China.
Journal of environmental management
|April 27, 2025
概括
工业废物红泥被转化为固体氨基吸附剂,以有效捕获二氧化碳 (CO2). 这种新型材料显著提高了二氧化碳吸附能力,并显示出潜在的工业应用的良好稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 工业固体废物,如红色泥,存在重大处置挑战.
- 有效的二氧化碳 (CO2) 捕获技术对于缓解气候变化至关重要.
- 工业副产品的资源利用可以带来可持续的解决方案.
研究的目的:
- 从红泥中开发一种新的固体氨基吸收剂,以有效捕获二氧化碳.
- 研究有机胺类型和负载对吸附性能的影响.
- 评估开发的吸附剂的循环稳定性和吸附机制.
主要方法:
- 红泥处理和功能化有机氨基.
- 使用吸附-脱附,XRD,TGA和SEM进行表征.
- 二氧化碳吸附-脱附试验和运动分析.
- 循环稳定性测试在多个吸附-脱附周期内进行.
主要成果:
- 成功制备了一种基于红泥的固体氨基吸收剂,具有增强的二氧化碳捕获能力.
- 确定MRM-20-TETA为最佳吸附剂,达到23.94 mg/g的二氧化碳吸附,比原始红泥增加29倍.
- 证明了良好的周期稳定性,在五个周期后仅降低了9.9%的容量.
- 动力学分析表明,一种联合的物理和化学吸附机制.
结论:
- 红泥可以有效地被用作开发高性能二氧化碳吸附剂的前体.
- 开发的氨基功能化的红色泥吸附剂为二氧化碳捕获提供了一个有希望的,稳定的和具有成本效益的解决方案.
- 这项研究为废物利用和可持续的碳捕获策略提供了宝贵的见解.
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