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SRB Biofilm Growth Simulation: Effect of Sulfate Concentration and Fluid Flow Velocity

SRB Biofilm Growth Simulation: Effect of Sulfate Concentration and Fluid Flow Velocity. Model Description. Simulation Strategy. Model Description. Simulation Domain. Model Description. Simulation Parameters. 0.8 mm. 3.2 mm. Model Description. Simulation Parameters.

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SRB Biofilm Growth Simulation: Effect of Sulfate Concentration and Fluid Flow Velocity

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  1. SRB Biofilm Growth Simulation: Effect of Sulfate Concentration and Fluid Flow Velocity

  2. Model Description Simulation Strategy

  3. Model Description Simulation Domain

  4. Model Description Simulation Parameters 0.8 mm 3.2 mm

  5. Model Description Simulation Parameters

  6. SRB Biofilm Heterogeneity Effect of Sulfate Concentration (Low Re) Sulfate Concentration Increases

  7. SRB Biofilm Heterogeneity Effect of Sulfate Concentration (High Re) Sulfate Concentration Increases

  8. SRB Biofilm Heterogeneity Effect of Flow Velocity

  9. SRB Biofilm Heterogeneity Effect of Flow Velocity

  10. Heterogeneity Parameters Effect of Sulfate Concentration

  11. Heterogeneity Parameters Effect of Sulfate Concentration

  12. Heterogeneity Parameters Effect of Flow Velocity

  13. Heterogeneity Parameters Effect of Flow Velocity

  14. Mass Transfer Parameters Local Sherwood Number Sh

  15. Mass Transfer Parameters Effect of Sulfate Concentration on Sh

  16. Mass Transfer Parameters Effect of Flow Velocity on Sh

  17. Mass Transfer Parameters Convection Flux vs. Diffusion Flux

  18. Mass Transfer Parameters Convection Flux vs. Diffusion Flux Flow Velocity Increases

  19. Mass Transfer Parameters Convection Flux vs. Diffusion Flux Sulfate Concentration Increases

  20. Mass Transfer Parameters Mass Transfer Within Biofilm

  21. Mass Transfer Parameters Mass Transfer Within Biofilm Flow Velocity Increases

  22. Mass Transfer Parameters Mass Transfer Within Biofilm

  23. Further Research 1 The function of Channels within SRB Biofilm Cavity Vortex Mass Transfer Sulfate/Substrate Pathway for Mass Transfer Should mass transfer and biofilm growth be coupled? Sulfide Inhibition Sulfide/Other Production Precipitation

  24. Further Research 1 Total Sulfide Concentration Profile Re = 0.08 Re = 8 Re = 32

  25. Reaction Parameters

  26. Reaction Parameters

  27. Further Research 2 The Effect of Re on and

  28. Further Research 3 Strategy For High Sulfate Concentration Simulation Sensibility to Sulfate Concentration Limitation

  29. Further Research 3 Strategy For High Sulfate Concentration Simulation The Cause of Concentration sensibility - Limited Penetration Depth

  30. Further Research 3 Strategy For High Sulfate Concentration Simulation Limited Penetration Depth – Is it reasonable?

  31. Further Research 3 Strategy For High Sulfate Concentration Simulation Limited Penetration Depth – Microbial Reaction Intensity √ √ √ √

  32. Further Research 3 Strategy For High Sulfate Concentration Simulation Limited Penetration Depth – Microbial Reaction Intensity

  33. Further Research 3 Strategy For High Sulfate Concentration Simulation Limited Penetration Depth – Maintenance Within The Bottom of Biofilm Sulfate/Substrate Deficiency Maintenance Decay Hydrolysis Void Inert Biomass EPS Precipitation Maintenance Product

  34. Further Research 3 Strategy For High Sulfate Concentration Simulation Limited Penetration Depth – Maintenance Within The Bottom of Biofilm Multi-species CA Decay Hydrolysis Inert Biomass Void EPS Precipitation Maintenance Product

  35. Further Research n • Sulfide Inhibition • Does sulfide influence heterogeneity structure ? • Could SRB be inhibited by the sulfide produced by themselves? • What factor influences the profile of different sulfide species in biofilm? • Precipitation • CA or iBM: Should precipitation be modeled as individual particles or just a percentage of a controlled volume? • Is there any interactive effect between sulfide, metal iron and SRB biofilm heterogeneity?

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