模拟固定基层染色学过程,考虑非线性吸附同热度
1Department of Mathematics, Air University, Islamabad 44000, Pakistan.
ACS omega
|October 23, 2023
概括
这项研究用Runge-Kutta不连续的Galerkin (RKDG) 方法对多元组件色谱的非线性平衡分散 (ED) 模型进行了数值近似. 这种先进的技术精确模拟复杂的染色学过程,有助于过程控制.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 计算化学的计算化学
- 分离科学 分离科学
背景情况:
- 染色学过程对于分离混合物至关重要.
- 模拟多组分混合物需要先进的技术,因为复杂的相互作用.
- 现有的模型经常在固定床上扎着对向-扩散动态.
研究的目的:
- 对多组分混合物的非线性平衡分散 (ED) 模型进行数值近似.
- 应用Runge-Kutta不连续的Galerkin (RKDG) 有限元素方法来解决染色学中的向导-扩散方程.
- 为了对各种染色学场景的高分辨率有限体积方案验证RKDG方法.
主要方法:
- 非线性平衡分散 (ED) 模型的数值近似.
- 丹克沃茨边界条件 (DBCs) 适用于一般化和标准的双朗穆尔等热量.
- 运用Runge-Kutta不连续的Galerkin (RKDG) 有限元素方法.
- 与高分辨率的有限体积方案进行比较.
主要成果:
- RKDG方法成功地处理了解决方案中的急剧不连续性.
- 对于一,二,三组分液态染色学分辨率,获得了非常准确的数值结果.
- RKDG方法的准确性与有限体积方案的准确性相当或更高.
结论:
- RKDG有限元素方法是模拟多元件染色学过程的强大而准确的技术.
- 这种动态模型为不断监测和控制染色学提供了基础.
- 该研究推进了复杂分离过程的模拟能力.
相关概念视频
01:09Analyte Adsorption and Distribution
675
In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and...
675
01:10Chromatography: Introduction
4.4K
Chromatography is a technique used to separate compounds based on differences of partitioning between two phases, the stationary phase and the mobile phase.
The phase in which the compounds linger or on which the compounds adsorb is called the stationary phase, whereas the mobile phase is the solvent that carries the solutes to be analyzed. In traditional column chromatography, the mixture flows through the stationary phase, and the compounds partition between the stationary and mobile phases...
The phase in which the compounds linger or on which the compounds adsorb is called the stationary phase, whereas the mobile phase is the solvent that carries the solutes to be analyzed. In traditional column chromatography, the mixture flows through the stationary phase, and the compounds partition between the stationary and mobile phases...
4.4K
01:15Optimizing Chromatographic Separations
418
Optimizing chromatographic separations is crucial for obtaining clean separations in a minimum amount of time. Optimization is required for several factors, including kinetic effects related to band broadening, plate height, capacity factor, and separation factor.
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
418
01:12Column Efficiency: Rate Theory
356
The rate theory of chromatography provides quantitative insight into the shapes and widths of elution bands. These bands are based on the random-walk mechanism governing molecular migration within a column. The Gaussian profile of chromatographic bands arises from the cumulative effect of random molecular motions as they progress through the column.
During elution, a solute molecule experiences numerous transitions between stationary and mobile phases, exhibiting irregular residence times in...
During elution, a solute molecule experiences numerous transitions between stationary and mobile phases, exhibiting irregular residence times in...
356
01:17Gas Chromatography: Types of Columns and Stationary Phases
685
Gas chromatography (GC) relies on stationary phases to separate and analyze components in a sample. There are two main types of stationary phases: liquid and solid. Liquid stationary phases are non-volatile, thermally stable, and chemically inert liquids coated onto the column. Solid stationary phases are particles of adsorbent material, such as silica gel or molecular sieves.
For an analyte to remain on the column for a sufficient amount of time, it must exhibit some level of compatibility (or...
For an analyte to remain on the column for a sufficient amount of time, it must exhibit some level of compatibility (or...
685
01:12Chromatographic Methods: Classification
2.3K
Chromatographic techniques are classified in three ways: the classification is based on the physical state of the stationary and mobile phases, how the mobile phase and the stationary phase contact each other, or through the chemical or physical processes that isolate the components of the sample. Typically, the mobile phase is either a liquid or gas, while the stationary phase is either a solid or a liquid layer applied to a solid surface.
Chromatographic techniques are typically named by...
Chromatographic techniques are typically named by...
2.3K