关于超声波增强降解素氧化浸出的机制和动力学研究
Ming Liang1,2,3, Jie Dai1,2,3, Haokai Di1,2,3
1State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, Yunnan 650093, China.
Langmuir : the ACS journal of surfaces and colloids
|August 28, 2024
概括
超声波增强还原漏显著改善了从素氧化物中的回收. 这种方法优化了条件,通过降低激活能量和改善动力学,实现了91.34%的浸出效率.
科学领域:
- 金工程 金工程 金工程
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 素氧化物出水是资源利用的关键瓶.
- 低效的漏导致大量的资源损失.
- 了解运动机制对于过程优化至关重要.
研究的目的:
- 为了研究常规和超声波增强还原氧化的运动机制.
- 优化漏条件,以改善的回收.
- 为提高漂效率提供理论基础.
主要方法:
- 常规和超声波减少漏的比较动力学分析.
- 优化超声波出参数 (温度,FeS度,超声波功率).
- 对这两种过程应用德罗兹多夫运动模型.
主要成果:
- 优化的超声波液实现了91.34%的回收,比传统方法提高了8.51%.
- 超声波增强降低了2.05kJ/mol的激活能量,并增加了反应速率.
- 铁3+度保持在15毫克/升以下,适合沉.
结论:
- 超声波增强还原浸出提供了优越的动力学和效率,从素氧化物提取.
- 该过程破坏了封装材料,并降低了溶液表面张力/粘度,降低了能量屏障.
- 这些发现为推进资源利用和工业提供了理论基础.
相关概念视频
Extraction: Advanced Methods
433
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
433
Oxidative Cleavage of Alkenes: Ozonolysis
10.1K
In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
10.1K
Electrodeposition
613
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Electrodeposition can...
613


