活性污泥基吸附剂的设计和结构,用于直接捕获二氧化碳的空气
Jun Liu1, Shaokang Li1, Qiang Ma1
1College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou, People's Republic of China.
Environmental technology
|December 2, 2025
概括
研究人员从城市污泥中制造了活性碳,用于二氧化碳 (CO2) 吸附,为废物利用和减少二氧化碳排放提供了可持续的解决方案. 在最佳条件下,二氧化碳吸附能力高.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 城市污泥对废物管理构成了重大挑战.
- 从废物流中回收资源对于可持续性至关重要.
- 减少二氧化碳 (CO2) 排放是一个全球环境优先事项.
研究的目的:
- 从城市污泥中开发活性炭,用于二氧化碳吸附.
- 调查制剂参数对吸附剂性能和性能的影响.
- 探索污泥资源利用和减轻二氧化碳排放.
主要方法:
- 市政污泥被烧解,激活 (使用NaOH) 和氨基基改性.
- 微观结构特征分析了孔隙结构的演变.
- 在不同的条件下 (温度,时间,激活剂) 测试了二氧化碳吸附性能.
主要成果:
- 固体NaOH的激活促进了上层毛孔结构的发展.
- 最佳的热解条件 (600°C,60分钟) 产生了出色的孔隙结构.
- 在25°C时,最大的二氧化碳吸附能力达到1.369 mmol/g,而更高的温度/时间会导致孔隙崩.
结论:
- 来自城市污泥的活性炭是一种可行的二氧化碳吸收剂.
- 制备条件显著影响孔隙结构和吸附能力.
- 这种方法提供了污泥利用和二氧化碳捕获的双重好处.
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