通过碳阴极电去除甲的优化策略:通过合理的兴奋剂类型增强甲和氧的共同吸附:通过碳阴极电去除甲的优化策略
Lei Yang1, Zhonghua Wang1, Zhipei Hu2
1School of Civil and Architectural Engineering, Northeast Petroleum University, Daqing 163318, China.
Langmuir : the ACS journal of surfaces and colloids
|August 1, 2024
概括
添加活性炭可增强甲和氧的共同吸收,提高电-芬顿系统中的甲去除效率. 这种新的方法通过协同吸附促进了污染物的降解.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
背景情况:
- 甲是一种常见的室内空气污染物.
- 电风 (EF) 技术对于有机污染物去除是有效的.
- 优化阴极材料对于提高EF性能至关重要.
研究的目的:
- 为了研究N-doped煤基活性炭对甲氧共吸收的影响.
- 评估共吸收对EF系统中过氧化生成和甲去除的作用.
- 探索增强吸附和去除的机制.
主要方法:
- 合成和表征N-doped煤基活性炭.
- 对甲-氧共同吸收的实验研究.
- 密度功能理论 (DFT) 计算用于吸附机制分析.
- 在电-芬顿系统中对甲去除的性能评估.
主要成果:
- 兴奋剂显著增强甲和氧的共同吸收.
- DFT计算显示,特定的结构 (甲和石墨) 分别有利于甲和氧吸附.
- 在120分钟内,N-化活性炭吸附了0.36毫克甲和0.1毫克氧气.
- 在电-芬顿处理后实现了82.43%的甲去除.
- 证明了甲和氧的协同吸附,具有更高的甲吸收.
结论:
- 化活性炭可以改善甲和氧的协同吸附.
- 增强的共吸收能提高了电-芬顿工艺中的甲去除效率.
- 本研究提出了一项新策略,用于在EF系统中使用改性活性炭有效去除有机污染物.
更多相关视频
10:44Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
9.9K
11:38In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework
Published on: February 1, 2020
15.9K
相关概念视频
C4 Pathway and CAM
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
Bioremediation
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.
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 with respect to...
Voltammetry: Stripping Methods
Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
