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Decouple reaction between carbonate and Benzene( aq ), other forms of carbon.

Config → Redox Couples…. Decouple reaction between carbonate and Benzene( aq ), other forms of carbon. Default setting: all redox reactions are coupled. Specify domain’s starting fluid composition on the Initial pane.

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Decouple reaction between carbonate and Benzene( aq ), other forms of carbon.

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  1. Config → Redox Couples… Decouple reaction between carbonate and Benzene(aq), other forms of carbon. Default setting: all redox reactions are coupled.

  2. Specify domain’s starting fluid composition on the Initial pane Decoupled redox pairs (Benzene and carbonate) can be constrained independently. Start and end times of two reaction intervals

  3. You enable redox kinetics on the Reactants pane. add → Kinetic → Redox reaction

  4. Type out the redox reaction. Set enzyme function to “on” and enter rate constant, half-saturation constant, and enzyme concentration.

  5. Inlet fluid enters the domain from t = 0 to 2 years Inlet fluid carries Benzene pulse into the domain

  6. Inlet 2fluid enters the domain from t = 2 to 10 years Clean rinse water: negligible Benzene in the second inlet fluid

  7. Specify domain size, gridding, and flow rate on the Domain pane. Domain is 1 km long, divided into 400 nodal blocks Set flowrate for 1st and 2nd reaction intervals Set specific discharge or head drop

  8. Set various mass transport properties on the Medium pane. Porosity affects groundwater velocity. Used to calculate coefficient of hydrodynamic dispersion. Run → Go traces the model

  9. Initial pulse of Benzene contaminated water is attenuated by biodegradation.

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