一项关于树生物炭氧化功能的研究
Antonella Di Vincenzo1, Ettore Madonia2, Calogero Librici2
1Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, V. le delle Scienze ed. 17 S. Cannizzaro, 90128 Palermo, Italy.
Molecules (Basel, Switzerland)
|March 13, 2025
概括
氧化处理改变了的生物炭 (PB) 特性,影响了它的水动力学和染料吸附. 这项研究确定了增强氧化生物炭特性的最佳条件.
科学领域:
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
- 环境科学 环境科学
背景情况:
- 生物质热解的副产品生物炭具有各种应用的潜力.
- 氧化功能化可以为特定用途量身定制生物炭特性.
- 了解氧化对生物炭多孔结构和水相互作用的影响至关重要.
研究的目的:
- 通过使用不同的氧化剂 (酸,硫酸,海豚混合物) 研究生物炭 (PB) 的功能化.
- 描述氧化生物炭中的结构和水动态变化.
- 为了评估改性生物炭的水容量和染料吸附性能.
主要方法:
- 高温热解以产生的生物炭.
- 在不同的条件下使用酸,硫酸和海豚鱼混合物的氧化处理.
- 通过扫描电子显微镜 (SEM),减弱总反射率里埃变换红外光谱 (ATR-FTIR),拉曼光谱和快场循环核磁共振 (FFC-NMR) 放松计进行表征.
- 使用Kohlrausch型伸展指数动力模型和蒙特卡洛方法分析水动力学.
- 评价保持水的容量和染料吸附.
主要成果:
- 氧化处理显著改变了树生物炭的表面化学和孔隙结构.
- FFC-NMR放松计揭示了生物炭孔内的水动态变化,由伸展指数模型解释.
- 修改后的生物炭表现出改变的水容量和模型染料不同的吸附效率.
- 在氧化处理条件和由此产生的生物炭特性之间确立了明确的相关性.
结论:
- 氧化功能化是一种有效的方法来定制的生物炭特性.
- 该研究提供了对结构与物质关系的见解,特别是关于水的动态.
- 确定了生产具有增强吸附和保持水分应用特征的生物炭的最佳反应条件.
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