相关实验视频

Updated: Jun 27, 2025

Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation

Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation

Published on: April 11, 2014

探究从基于的水力动力空化中产生的单片氧和超氧基:机制及其与空化强度的关系

Shuchang Liu¹, Xi Yuan¹, Zhewen Shao¹

¹College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang 443002, China; Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China.

The Science of the total environment

|April 26, 2024

概括

基于的水力动力腔化 (VBHC) 通过基转化产生单片氧 (1O2) 和超氧化基 (·O2−). 最佳的ROS产量取决于组合的操作条件,特别是进气压.

科学领域:

环境化学环境化学
化学工程是化学工程的重要组成部分.
流体动力学流体动力学

背景情况:

水力动力腔化 (HC) 主要利用基来降解有机污染物.
在HC系统中,其他反应性氧物种 (ROS) 的生成机制在很大程度上仍未被描述.
了解各种ROS对于优化基于HC的整治技术至关重要.

研究的目的:

研究基于的水力动力空化 (VBHC) 中单片氧 (1O2) 和超氧化基 (·O2−) 的生成规则和机制.
在各种操作条件下分析ROS生成和化强度之间的关系.
在VBHC过程中阐明ROS的转化途径.

主要方法:

用于ROS生成研究的基于旋转的水力动态化 (VBHC) 反应器.
计算流体动力学 (CFD) 模拟用于分析洞穴强度特征.
火实验是为了确定ROS转变路径和起源而进行的.

主要成果:

操作条件显著影响VBHC中的1O2和O2−生产.
发现4.5巴的进气压对1O2和O2−产生更有利.
较高的温度和通风率并没有始终提高ROS产量;最佳参数需要与入口压力结合分析.
1O2来自O2−,它来源于基激素和溶解氧.
化强度的增加与区域中1O2和O2−的产生和扩散的增加相关.

结论:

这项研究阐明了VBHC反应堆中1O2和O2−的生成机制.
洞化强度和这些ROS的产生之间确立了直接的联系.
这些发现为提高ROS在污染物降解的水力动力空化过程中的有效性提供了新的见解.

关键词:

在 CFD 交易中,我们可以看到 CFD.洞穴的强度洞穴的强度生产机制的产生机制.这就是ROSOS ROS.转换路径的转换路径这是一个VBHC.

更多相关视频

An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation

An Atmospheric Pressure Plasma Setup to Investigate the Reactive Species Formation

Published on: November 3, 2016

Expression and Purification of Nuclease-Free Oxygen Scavenger Protocatechuate 3,4-Dioxygenase

Expression and Purification of Nuclease-Free Oxygen Scavenger Protocatechuate 3,4-Dioxygenase

Published on: November 8, 2019

相关概念视频

Radical Autoxidation

Radical Autoxidation

The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...

Oxidative Cleavage of Alkenes: Ozonolysis

Oxidative Cleavage of Alkenes: Ozonolysis

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.

Radical Reactivity: Overview

Radical Reactivity: Overview

Radicals, the highly reactive species, gain stability by undergoing three different reactions. The first reaction involves a radical-radical coupling, in which a radical combines with another radical, forming a spin‐paired molecule. The second reaction is between a radical and a spin‐paired molecule, generating a new radical and a new spin‐paired molecule. The third reaction is radical decomposition in a unimolecular reaction, forming a new radical and a spin‐paired...

Radical Formation: Elimination

Radical Formation: Elimination

Another method of radical formation is the elimination process. It is the opposite of the addition route and is driven by the instability of the radical. For example, as depicted in Figure 1, dibenzoyl peroxide yields a pair of unstable radicals upon homolysis. Given its instability, this radical spontaneously undergoes elimination via a C–C bond cleavage to form a relatively more stable phenyl radical. The mechanism involves cleavage of the bond between the α and β positions...