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Chemical Reaction Engineering Blog Posts

Modeling Reacting Flow in Porous Media

October 15, 2014

For anyone interested in modeling chemical reactions and/or flow through porous media, we have created a video to demonstrate how COMSOL Multiphysics simulation software handles such applications. Consider this your interactive tour of the model documentation for our porous reactor model.

Sometimes a Cigar Is More Than Just a Cigar

September 10, 2014

As a chemical engineer, I can’t just smoke a cigar and leave it at that. Here, I investigate the anatomy, structure, and chemical process zones of a cigar and show you a simple model of the temperature distribution of the smoke in a cigar as well as the concentration of oxygen.

Isoelectric Focusing and the Migration of Chemical Species

July 21, 2014

In chemistry, separation using differences in migration patterns plays an important role in understanding the properties of different chemical species. To help identify small chemical differences between molecules, researchers use a type of electrophoresis known as isoelectric focusing. With the use of an applied electric potential, this technique helps to define and separate molecules based on their varying isoelectric points. Let’s take a closer look at this separation method.

Modeling High-Performance Liquid Chromatography

June 13, 2014

Some chemical applications call for identification and quantification of the components in a chemical mixture. High-performance liquid chromatography (HPLC) is a versatile separation technology for chemical species. To learn more about the separation process, we can model it with simulation software.

Ammonia Synthesis, a Complex and Nonlinear Process

May 8, 2014

In this final installment of our Chemical Kinetics series, we will look at one of the major chemical syntheses of the modern era. This is a process that every single one of us has benefited from, whether we know it or not: ammonia synthesis. It has become one of the most studied reactions in history, its intricacies and complexities are the subject of several textbooks, and its history is a complex tale of good and evil.

Chemical Parameter Estimation Using COMSOL Multiphysics

April 10, 2014

The last two blog posts in the Chemical Kinetics series were concerned with modeling chemical reactions based on a particular set of parameters. While this is important and of great academic and industrial interest, the relevant parameters were assumed. Now, let’s find out how to estimate the chemical parameters using COMSOL Multiphysics.

Enzyme Kinetics, Michaelis-Menten Mechanism

March 13, 2014

While the mathematical study of chemical reactions has been performed for more than a century, it is only fairly recently that the computational tools for numeric integration of rate equations have been widely available. The old adage of “necessity is the mother of all invention” holds true in this instance. Here, you will find a classical analysis of a non-trivial reaction system, and learn how the simplified solution compares with the “real” one.

Buoyancy-Driven μPCR for DNA Amplification

February 26, 2014

DNA is a complex molecule that contains instructions for life and often referred to as a “digital fingerprint” or code telling a cell what to do. DNA is often the only means for accurate testing and identification of biomolecules, cells, or even an entire person during forensic investigations. The need to be able to test for DNA, as quickly as possible, and even at the site where the sample is taken, is becoming more and more important.


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