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-- Cant converge, abandoning path. -- Xi step is too small Hello Brian and Jia, while modeling long term reactions of CO2-saturated residual water (post CCS injection) the model cannot converge - see the Xi step error, despite multiple attempts of changing the stepping parameters The inputs are analytical results of water chemistry and reservoir mineral
saturation in silica polymorphs from dissolution of amorphous silica in . . . I am running silica glass dissolution models in REACT I notice that once quartz becomes saturated in the fluid (Q K = 1) after 1 day for instance, the other silica polymorphs e g silica glass can never become saturated (related to the lower solubility of qtz) and Q K stops increasing after a da
x2t and x1t - contaminant flows and time - forum. gwb. com Hi GWB, I would like to ask your advice on the flow and mass calculation on x1t (x2t) model I modified based on one of the example scripts (Pb_contam x1t) Item Setting Concentrations of Pb Initial Pb of 0 1 mg L Contaminant fluid Pb of 100 mg L temp of 25 Celsius degree Intervals Left – Contamin
About kinetic pyrite oxidation - The Geochemists Workbench . . . The GWB text book says that the exponential number in rate law of kinetic mineral is empirically decided Indeed, when I set the ‘power = 1’ as the exponent of the relating chemical concentration, reaction rate seems to be larger based on the rate law equation
Modeling Perovskite Dissolution Reaction - forum. gwb. com Hello everyone, I am currently working on modeling the dissolution reaction of perovskite (CaTiO3) in the following reaction: CaTiO3 (Perovskite) + CO2 = TiO2 (Anatase) + CaCO3 (Calcite) Challenges: Database Availability: None of the standard databases in GWB include perovskite However, I found
Simple question Act2 Eh pH diagram - The Geochemists Workbench . . . Hello, Im really new to this I am basically trying to replicate this Eh pH diagram as a learning process: But i cant figure out how This is my graph i made with GWB student And the basis - What do the horizontal blue dotted lines represent on my graph? - Why does my GWB graph show the water lim
Kinetic Model for Hydrogen Production - forum. gwb. com Every example in the GWB Reaction Modeling Guide before Chapter 4 is an equilibrium model Some cases: If you’re looking at mineral precipitation from a supersaturated fluid, for example, then the default condition is equilibrium What precipitates will precipitate, with no intervention required to specify what forms If you have some mineral initially in equilibrium with a fluid, but some
Unable to plot results of Speciation Diagram using GtPlot For more information, please see section 2 3 Initial system in the GWB Reaction Modeling Guide When you say phosphogypsum phase, it sounds like what you want might be a solid solution model that can handle an arbitrary number of end members In general, that is an extremely difficult problem to solve and to parameterize