Delta Processing -Ammonia stripping calculations.xmcd

[Joeboy]

This is a file I developed several days ago for a firm that is looking for a way to reduce high levels of ammonia in stormwater.  The file computes the ammonia/ammonium species variation as a function of pH and temperature, ammonia (NH3) can be air stripped, ammonium (NH4) cannot.

[ValeryOchkov]

Thanks!

Very interesting file!

I have some thing with ammonia too

One example on Mathcad server

http://twt.mpei.ac.ru/MCS/Worksheets/Chem/Ro-t-C-NH3.xmcd

And you can use units of temperature in your calculation:

[Joeboy]

Valery;

Thanks for the temperature units tip, I modified and uploaded a new version of the file

[ValeryOchkov]

You welcome, Dixie!

But

1. 273 or 273.15 - it is a quation!

2. See http://twt.mpei.ac.ru/PVHB/T-68andT-90.html

3. It will be good to create an animation - one example http://communities.ptc.com/videos/2185

[rwells]

It will take me quite some time to investigate thie data but I am sure your work is directly applicable to copper etching machines. A constant problem is flow of air, replenishing the ammonia, and build up of salt (copper sulphate). The control of these parameters determines a rate (how much copper is being dissolved how fast).

[Joeboy]

I have just finished sizing an ammonia stripping tower for an industry in Beaumont Tx.  About the only theory involved is Henry's Law.  The rest are empirical formulations for the various transfer coefficients and air/liquid ratios.  I suspect the copper sulfate problem is due to the high pH required.  I will post it as soon as PTC gets my license straightened out.  Seems they have not yet grasped the fact that windows machines can have more than one address. 

[Joeboy]

when I click on your file my virus scanner will not let me view it

[rwells]

Dixie  . . .Unfortunately I am having a great deal of trouble with this site (just joined three days ago and not real familiar with the protocal) and cant seem to get Mathcad downloaded. I did get an email notice from you. I did copper etching in the printed circuit industry for many years.