This keyword data block is
used to define rate parameters in the style of Sverdrup, Oelkers, Lampa, Belyazid, Kurz, and Akselsson (2019).
The parameters can be used by the Basic function RATE_SVD to calculate kinetic
rates for any mineral in the data block. It is expected that the function
RATE_SVD will be used in rate definitions in the RATES data block.
RATE_SVD calculates rates without surface area or affinity factors. These
factors can be added in the RATES definition.
Line 0: RATE_PARAMETER_SVD
Line 1: Albite 3350 2500 1680 1200 3100 \
14.6 0.5 0.4 0.4 0.4 0.5 \ 16.8 0.15 4 0.15 200 3 900 \ 16.05 0.6 \ 14.7 0.5 5 \ 15.4 0.3 0.1 12 0.5 5 3 900 RATE_PARAMETERS_SVD is the keyword for the data block.
Line 1: Mineral name, H+ H2O
CO2 Org_acids OH- \
pkH
nH yAl CAl
xBC CBC \
pkH2O
yAl CAl xBC
CBC zSi CSi
\
pkCO2
nCO2 \
pkOrg
nOrg COrg \
pkOH-
wOH- yAl CAl
xBC CBC zSi
CSi
Mineral
name –Name of the mineral for which rates can be calculated.
Activation energies
Acid_log_K –Nonzero indicates parameters for acid rate will be
used.
Aa—Rate constant for acid
rate.
Eaa—Activation energy for
the acid reaction.
n(H+)—Exponent of activity
of H+ in the acid rate equation.
Neutral_log_K— Nonzero
indicates parameters for the neutral rate will be used.
Ab—Rate constant for
neutral rate.
Eab—Activation energy for
the neutral reaction.
Base_log_K—Nonzero
indicates parameters for the base rate will be used.
Ac—Rate constant for base
rate.
Eac—Activation energy for
the base reaction.
n(OH-)—Exponent of activity
of OH- in the base rate equation.