相关实验视频
Updated: Jun 25, 2025

13:19
Enhanced Oil Recovery using a Combination of Biosurfactants
Published on: June 3, 2022
5.2K
关于表面活性剂的复合优化和对煤湿度的协同效应的研究
Deji Jing1,2,3, Chunhua Bao1,2,3, Zhe Dong4
1College of Safety Science and Engineering, Liaoning Technical University, Fuxin, 123000, Liaoning, China.
Scientific reports
|May 20, 2024
概括
这项研究使用复合表面活性剂提高了煤的湿透性,大大减少了煤矿中的灰尘. 最佳的SDS和CAB-50混合物改善了水分子吸附和除尘效率.
科学领域:
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
- 采矿工程 采矿工程 采矿工程
背景情况:
- 提高煤的湿透性对于在采矿操作中控制灰尘至关重要.
- 表面活性剂被广泛用于增强水和煤表面之间的相互作用.
研究的目的:
- 研究复合表面活性剂对煤浸湿性的协同作用.
- 为了确定最佳的表面活性剂混合物和度,以提高湿透性和减少灰尘.
- 用计算和实验方法阐明增强湿度背后的机制.
主要方法:
- 单因子实验和接触角度/表面张力测量以选表面活性物质.
- 量子化学计算和分子动力学模拟以分析分子相互作用.
- 在煤矿中进行实地测试,以评估最佳表面活性剂混合物的降尘效率.
主要成果:
- 复合表面活性剂,特别是非离子-离子和离子-离子混合物,显著改善了煤的湿透性.
- 最佳的混合 (0.5重%SDS + 0.5重%CAB-50) 将接触角度降低到15.24°,表面张力降低到23.62 mN/m.
- 计算分析显示,具有较高表面静电电位的表面活性分子可以促进对煤和水的吸附.
- 实地测试表明,总尘埃减少了86.01%,排气尘埃度减少了89.35%.
结论:
- 复合表面活性剂具有协同效应,显著提高了煤的湿透性.
- 该SDS + CAB-50混合物充当水分子的载体,改善灰尘抑制.
- 这种表面活性剂增强的喷水技术为控制煤矿环境中的灰尘提供了高度有效的解决方案.
相关概念视频
Entropy and Solvation
7.0K
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
7.0K
Solubility
17.5K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
17.5K
Colloids
17.4K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
17.4K
Factors Affecting Dissolution: Particle Size and Effective Surface Area
807
Dissolution kinetics, an essential aspect of oral drug delivery, is significantly influenced by the drug's particle size. According to the Noyes-Whitney dissolution model, the dissolution rate correlates directly with the drug's surface area. The larger the surface area, the higher the drug's solubility in water, leading to a faster drug dissolution rate. Reducing particle size increases the effective surface area, enhancing the dissolution process. Micronization and nanosizing are...
807
Intermolecular Forces and Physical Properties
20.8K
20.8K
Colloidal precipitates
565
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
565

