从水中去除六价,使用通过缓慢和微波热解来获得的基生物炭
Eva Pertile1, Tomáš Dvorský1, Vojtěch Václavík1
1Department of Environmental Engineering, Faculty of Mining and Geology, VSB-Technical University of Ostrava, 17. Listopadu 15/2172, 708 00 Ostrava, Czech Republic.
Molecules (Basel, Switzerland)
|December 11, 2025
概括
软木生物炭有效地从水中去除六价. 微波辅助热解生物炭显示出更高的去除效率,在选条件下达到87%,表明其对废水处理的潜力.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 六价[Cr(VI) 是水溶液中的有毒污染物.
- 来自软木的生物炭提供了一个可持续的吸附材料.
- 热解方法影响生物炭的特性和吸附能力.
研究的目的:
- 评估通过缓慢热解 (C-SP) 和微波辅助热解 (C-MWP) 产生的软木衍生生物炭,以去除CrVI.
- 描述生物炭材料并分析它们的吸附行为.
- 评估C-SP和C-MWP在从水溶液中去除Cr (VI) 的效率.
主要方法:
- 生物炭生产使用缓慢热解和微波辅助热解.
- 材料特性:近距离/元素分析,BET表面积,热重力测量,FTIR.
- 在不同pH值和初始Cr(VI) 度下进行批量平衡和动力吸附实验,使用非线性适合等温和动力模型进行分析.
主要成果:
- 与C-MWP.相比,C-SP表现出更大的表面积 (174.5 m2·g-1) 和微孔体积.
- 观察到的最大摄入量为C-SP的32.7 mg·g-1和C-MWP的35.9 mg·g-1在pH值为2.0.
- 在选条件下 (pH1.1,45分钟),C-MWP实现了87%的Cr(VI) 除去,超过了C-SP (72%).
结论:
- 两种C-SP和C-MWP都有效地从水溶液中去除Cr (VI),C-MWP在特定条件下表现出优越的性能.
- 吸附是快速的,并受到表面异质性的影响,但需要进一步分析以阐明确切的去除机制 (物理吸附,化学结合或氧化还原反应).
- 软木衍生生物碳,特别是C-MWP,作为Cr (VI) 修复的可持续吸附剂,显示出有前途.
相关概念视频
Bioremediation
22.0K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
22.0K
Sample Preparation for Analysis: Advanced Techniques
1.2K
Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
1.2K


