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RE: De-nitrification questions

> You have solved my problem, but the question still remains: How does
PHREEQC recognize a reductant in the CH2O (this compound had not been
defined in database)? Does PHREEQC check a valency of each element?

PHREEQC simply increments the total number of moles of C, H, O in the
aqueous phase by the amount defined by the formula and reaction amount
given in REACTION. In other words, it parses the formula that you give it
for the elements and element stoichiometry and then adds these to the
solution in the specified amounts.


David Parkhurst (dlpark@xxxxxxxx)
U.S. Geological Survey
Box 25046, MS 413
Denver Federal Center
Denver, CO 80225

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