[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: Release of PHREEQC 2.7 and PhreeqcI

Dr. Parkhurst:

I am trying to use PHREEQC to simulate the formation of green rust (iron
corrosion product). Its foumula is considered to be Fe4Fe2(OH)12SO4------the
first Fe is in 2nd valence and the second Fe is in 3rd valence (So I might
write it as Fe(II)4Fe(III)2(OH)12SO4. But the PHASE data block in PHREEQC
seems only to accept single valent element on left hand side. I thought of
SOLID-SOLUTION but the green rust is not yed considered as any aggregate of
other phases. I don't know if there is any other way to handle this problem.

the reaction equation is:

Fe4Fe2(OH)12SO4 = 5Fe(OH)2 + Fe2+2 + SO4-2 + 1/2O2 + H2O

Thanks a lot for your help.

Yong Wang @BU

Project Home Page
Complete Water Resources Division Software
USGS Home Page
Water Resources Division Home Page
NRP Home Page
Help Page
USGS Privacy Statement       

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: https://wwwbrr.cr.usgs.gov/projects/GWC_coupled/phreeqc/mail/msg00155.html
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number 1609 since Jan 22, 1998.