Hi David. Margaret here again, from CSM. I'm still struggling with making biodegradation work in phreeqc. The decay equation I'm using is benzene(final) = benzene(initial)*e^(-rate*time). I'm not sure what "TOT" means (total moles of benzene in the system, moles of aqueous benzene?) and what the term "moles" represents and how it is recycled in the transport function. The way I have the RATES block set up, biodegradation is occurring to some extent. However, the 1/2 life for benzene is a fraction of a day, so after the first time step (3 years), no benzene should exist and yet it does. I've included my input deck and database. If there's some obvious problem, can you let me know? If not, do you have any free time this week when we could meet for perhaps an hour and discuss the intricacies of phreeqc? My schedule is open except for Thursday morning and Friday after 3:00 pm. I really appreciate all your help!! Once I get over this hump, I'll feel very positive about finishing up my thesis. Thanks again. Margaret Dodds
Description: Zip archive
Please note that some U.S. Geological Survey (USGS) information accessed through this page may be preliminary in nature and presented prior to final review and approval by the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the sole responsibility of the user.
Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government.
The URL of this page is:
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number 1416 since Jan 22, 1998.