Membrane Theory

In a practice-based case, students design and select membrane equipment. A demo is available.


Below is a description for the DownStream Processing module. When started, the module will open in a new window, but it might be convenient to print this page (see page bottom). The demo requires a recent browser (Mozilla, Opera, or Internet Explorer) with the Flash plugin.

Start the Membrane module

Tour description

This module is designed to train students in membrane theory. This module is used in working lectures, but can be used by individual students as well. Usually the students have lecture notes with theory while making this module. This theory is also available in the so called library section of the module.

In this first page, you are set in the role of a junior consultant.

  • Click start the first task: membrane selection on the bottom of the page.

In this role you get assignments from the management. The first assignment is to select a membrane.

  • Click continue.

The first question is a introduction question. The question is easy, and will hopefully make students feel a bit confident. For the convenience of the demo, all the questions have been answered already, so you can easily navigate to all questions in the module using the navigation on the left side.

  • Select 5 minutes have passed and I have still no idea, help! and click Answer.

Whenever an answer is given, the user will get feedback. If a question is answered wrong multiple times, the amount of feedback will increase. After several wrong answers the correct answer will be given. A user will, therefore, never get stuck in a module.

  • Click the question flow chart in the navigation on the left.

This is a type of question specifically interesting for engineering. The users fill in the flow chart, and therefore need to know all the properties important for membrane processes.

  • Click the question The best choice in the navigation on the left.

As you can see here, also the correct answer will be followed with feedback, explaining why this answer was correct.

The feedback in these questions is highly rewarded by students. We often see that, after having answered the question correctly, they select the other answers as well, just to see what feedback is given.

  • Move your mouse to the top right, over navigation. A popup is shown, and in the popup you can see the link library. Click this link, a new window will open.

In the library window, you see a navigation tree on the left, and the content on the right. In the navigation view you can see that different documents have different icons. A green icon means the document should be easy for you, an orange icons is neutral, and a red icon means the document might be too hard.

  • In the navigation view, click the following page:

    Library Home -> Operations -> Membranes

This is a typical content page in the library. As you can see, some words are grey instead of black. If you move the mouse over such a word, an explanation is given, and sometimes a translation of the word into Dutch. Lower on the same page, you can see an animation of how a membrane process works.

  • In the navigation view, click the following page:

    Library Home -> Operations -> Membranes -> Balances

This is again a typical content page. If you move the mouse over an equation on this page, you will get an explanation of all the symbols used in the equation. This functionality is also highly rewarded by students, because it gives them overview in the large number of symbols used in process engineering.

On the bottom of this page another interesting feature can be seen: an interactive graph. On the bottom of the graph there is a slider that can be used to set the retention R. The graph will then immediately show the new graph for this value of R.

This is the end of the Membrane module demo. Feel free to explore other pages not part of this demo tour.