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树叶对CO2吸附的资源利用
Xia Wang1, Fanyuan Kong2, Wulan Zeng1
1Department of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, China.
Molecules (Basel, Switzerland)
|May 11, 2024
概括
树的叶子被转化为活性炭 (AC),以捕获二氧化碳 (CO2). 这些可持续的AC证明了高效的二氧化碳吸附和稳定的再生,为碳捕获技术提供了有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 生物质废物,如叶,是开发可持续材料的未充分利用的资源.
- 有效的碳捕获技术对于减轻温室气体排放和应对气候变化至关重要.
研究的目的:
- 从树的叶子中合成基于生物质的活性碳 (AC),用于二氧化碳 (CO2) 捕获.
- 研究不同激活方法 (H3PO4和KOH) 和尿素处理对AC特性和CO2吸附性能的影响.
主要方法:
- 树叶被用酸 (H3PO4) 或氧化 (KOH) 和尿素处理.
- 准备的ACs的表征包括孔隙结构,功能组和形态学的分析.
- 在环境条件下评估了二氧化碳吸附能力,再生效率和动力学.
主要成果:
- H3PO4和尿素处理增强了孔隙发育和酸含量.
- KOH和尿素处理促进了基和乙烯基功能群的形成.
- 在室温下,ACs实现了4.07 mmol/g (H3PO4激活) 和3.85 mmol/g (KOH激活) 的CO2吸附能力.
- 这两种交流电源在十个吸附-脱附周期中都表现出稳定的再生.
结论:
- 以H3PO4或KOH和尿素激活的树叶衍生ACs对二氧化碳捕获有效.
- 开发的AC显示了可持续和再生碳捕获应用的潜力.
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