从农业废物中提取的酸性修饰生物炭,以有效地捕获低度的氧化 (N2O):机制和环境影响
Mingming Fu1,2, Yingdi Ma1, Fengrui Yang1
1College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China.
Toxics
|August 27, 2025
概括
来自农业废物的酸性修饰生物炭有效捕获二氧化 (N2O) 的排放. 小麦的生物炭具有最高的吸附能力,为减少温室气体提供了可持续的解决方案.
科学领域:
- 环境科学
- 材料科学
- 化学工程
背景情况:
- 中国农业和废物处理产生的低度氧化 (N2O) 排放是全球变暖的重要原因.
- 目前的控制方法不足以应对这些大量的N2O排放.
研究的目的:
- 通过酸处理的生物炭量化N2O捕获增强.
- 阐明生物炭中N2O的化学吸收机制.
- 确定最佳的农业废弃物原料,以减轻N2O的使用.
主要方法:
- 农业废物 (果,木,小麦,玉米) 被转化为生物炭.
- 生物炭前体是使用0.1mol L-1 HCl进行酸改性.
- 使用伪二次和朗穆尔模型分析了N2O吸附动力学和同热量.
主要成果:
- 酸性修饰增加了生物炭表面积,氧含量和功能组 (基,基).
- 吸附N2O后出现伪二次动力学,表明化学吸收.
- 在酸性修饰后,小麦生物炭 (XM) 的吸附能力最高,增加了65.72%.
结论:
- 用酸修饰的生物炭有效地捕获低度的N2O.
- 小麦是开发高效N2O吸附剂的最有前途的原料.
- 这种方法为减轻N2O排放提供了可扩展,经济和环保的方法.
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