Geochemist`s Workbench

Geochemist`s Workbench

Version 10.0 - GWB Professional

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The Geochemist's Workbench 10.0 Professional edition is the complete suite of tools to meet every practicing geochemist’s needs. GWB Pro is your choice for reactive transport modeling. One-dimensional and two-dimensional simulations of reactive transport in single and dual-porosity media, including bioreaction and migrating colloids, are a snap. Then animate your results and create video clips with a few clicks. GWB Pro's advanced algorithms and multithreaded design make it ideal for simulating the fate and transport of contaminants in flowing ground and surface water. In addition to reactive transport, GWB Pro models kinetic and equilibrium reaction in multicomponent systems, calculates Eh-pH and activity diagrams, and creates a spectrum of specialty plots.You can balance reactions, calculate equilibrium constants, and create powerful geochemical spreadsheets.

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Programs X1t and X2t model reactive transport in one and two dimensions. The models account for:

  • Advection, dispersion, and diffusion.
  • Uniform or heterogeneous medium properties.
  • Dual porosity (stagnant zone) effects.
  • Heat transfer by advection and conduction.

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X1t and X2t can incorporate any combination of equilibrium and kinetic reactions:

  • Mineral precipitation and dissolution.
  • Gas transfer.
  • Complexation and dissociation.
  • Sorption and desorption.
  • Redox transformation.
  • Catalysis and enzymes.

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Migrating colloids are a critical vector for transport of radionuclides, heavy metals, and other contaminants. The GWB handles them with ease:

  • Any complexing surface can form a colloid.
  • The colloid and its surface complexes migrate by advection and dispersion.
  • Colloid mobility may vary in time and space, according to a user-supplied function.

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Models can account for reactions catalyzed by microbial activity:

  • Pure culture and mixed communities.
  • Population growth and decay.
  • Thermodynamic effects.

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GWB Pro is built from the ground up for dual porosity modeling:

  • Each nodal block divided into free-flowing and stagnant fractions.
  • You specify the geometry and characteristic dimensions of the stagnant zones.
  • The apps account for species diffusion and heat conduction into and out of the stagnant zones.

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Program Xtplot renders the results of your modeling.

  • Plot any variable against distance or time.
  • Color map, color mask, and contour diagrams.
  • Animate map view plots.
  • Export animations to make video clips.

  • GSS is a spreadsheet for manipulating and plotting geochemical datasets
  • Rxn balances chemical reactions, calculates equilibrium constants, and more
  • Act2 generates stability diagrams on activity, Eh, pe, pH, and fugacity axes
  • Tact makes temperature-activity and temperature-fugacity diagrams
  • SpecE8 figures concentrations of aqueous and sorbed species, saturation, and gas fugacity
  • Gtplot displays data from GSS and the results of running SpecE8 and React
  • TEdit is a graphical application for quickly and accurately editing and combining thermodynamic datasets
  • React traces reaction paths involving fluids, minerals, gases, and microbes
  • X1t models reactive transport in groundwater flows in one linear, radial, or spherical coordinate
  • X2t simulates reactive transport in two dimensions, including injecting and producing wells
  • Xtplot renders and animates the results of X1t and X2t simulations

  • Spreadsheet for geochemical data
  • Convert chemical units
  • Time series, cross, and ternary plots
  • Piper, Stiff, Durov, Schoeller diagrams
  • Show TDS as circles of varying radius on Piper, other plots
  • Ion balance bar and pie charts
  • Flag non-compliance
  • Calculate mineral saturation and gas fugacity
  • Mix samples
  • Compare replicates and check standards
  • Calculate redox state
  • Check charge balance
  • Compute TDS
  • Eh-pH, activity, and fugacity diagrams
  • Temperature-activity and temperature-fugacity diagrams
  • Solubility diagrams
  • Mosaic (ligand speciation) diagrams
  • Calculate species’ concentration and activity coefficients
  • Redox equilibrium and disequilibrium
  • Use “Pitzer equations” to compute activity coefficients
  • Sorption by Kd, Freundlich, and Langmuir models
  • Ion exchange
  • Two-layer surface complexation model
  • Gas and mineral buffering; pH-stat
  • Balance chemical reactions
  • Compute equilibrium constants (log Ks) at temperature
  • Derive equilibrium equations, temperatures
  • Set line colors individually on x-y plots
  • Paste graphs into Word, PowerPoint, Excel, Adobe Illustrator
  • Save graphics as eps, pdf, ai, emf, svg, and bmp files
  • Plug-in to other programs
  • Choose 32 bit or even faster 64 bit version
  • Option to automatically install maintenance releases
  • Edit and combine thermodynamic datasets
  • Create and edit datasets of surface reactions
  • Flexible redox pivoting in thermodynamic datasets
  • Dashboard keeps all your tools in one place
  • Model water-rock interaction
  • Simulate fluid mixing
  • Speciation diagrams vs. pH, etc.
  • Closed and open chemical systems
  • Polythermal simulations
  • Fixed and sliding activity, fugacity
  • Combine equilibrium and kinetic reactions
  • Kinetics of mineral precipitation and dissolution
  • Aqueous complexation and dissociation kinetics
  • Sorption and desorption kinetics
  • Kinetics of redox transformation
  • Enzymes and catalysts
  • Gas transfer kinetics
  • Microbial catalysis and growth
  • Mixed microbial communities
  • Thermodynamic constraint on microbial metabolism
  • Specify form of kinetic rate laws
  • Turbo scripting speeds rate law evaluation
  • Transient medium and fluid properties
  • Account for heat sources and sinks
  • Report factors limiting time steps
  • Paste any plot into Excel as numerical data
  • Reactive and bioreactive transport
  • Colloidal transport
  • Multithreaded (parallel execution on multicore chips)
  • Advection, dispersion, and diffusion
  • Uniform or heterogeneous medium
  • Dual porosity (stagnant zones)
  • Advective and conductive heat transfer
  • Import flow fields
  • Linear, radial, and spherical coordinates in 1-D
  • Rectilinear and axisymmetric coordinates in 2-D
  • Regular and adaptive grids
  • Map view, color mask, and contour plots
  • Animation and output for video

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