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Sept-2007
Vista compatible, 32-bit, version 4.6 is released.
May - 2002 Version 4.5: Thermodynamic
database is upgraded, documented and conforms to USEPA standards.
All reaction data is referenced.
Sept
- 1998 Version
4.0: Windows, 16-bit version released. Numerical stability
locked
in for wide range of chemical conditions. New report writing
features. Titrations, sensitivity
analysis, processing of huge datasets now possible.
June - 1992
Version 3.0: DOS, 8-bit version is released. First spatial user
interface for MINEQL. Tableau view of input
data. Object oriented management of output data to fit any
application. MINTEQ data is included.
Prior to our
work:
Late 1980's USEPA
combines MINEQL numerical code and the USGS's WATEQ thermodynamic
data to produce MINTEQ.
1987 At MIT, Dave
Dzombak collects Two Layer surface complexation data for a wide range
of aqueous ions on FeO
Early 1980's
The USGS develops a chemical equilibrium program called WATEQ. Their
work continues throughout the decade to provide critical review of
thermodynamic data.
1980
MINEQL "+Stanford" (because of the work at Stanford University)
provides
electrostatic surface complexation reactions within MINEQL.
1975
MINEQL is developed at MIT, by John Westall and Francois Morel. The
FORTRAN program uses a generic tableau
approach to describe equilibria and mass balance in aqueoous systems.
1972
REDEQL is developed by James Morgan and Francois Morel. First
chemical equilibrium program with a vast scope of application. Becomes
the prototype for MINEQL. | |
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1.
What
chemical
components are in the water?
In
MINEQL+, you use your mouse to select ions from a menu of over 145
components. Since every component available in the MINEQL+ database is
listed on-screen, nothing is hidden. 
2.
How do
these
components interact with one another?
MINEQL+ uses the MINTEQA2 database of thermodynamic constants as a
starting point for defining the reactions in any aqueous system. Press
a single key to load in all the complexation,
precipitation/dissolution/ adsorption, or redox reactions for your set
of chemical components. 