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Faculty Advisor: Dr. Eunsung Kan

United Arab Emirates University College of Engineering Chemical & Petroleum Eng. Department GP II Course. Faculty Advisor: Dr. Eunsung Kan. Outline. Introduction. MTBE. GAC Adsorption. Adsorbent (GAC). Regeneration by Fenton’s Oxidation.

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Faculty Advisor: Dr. Eunsung Kan

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  1. United Arab Emirates University College of Engineering Chemical & Petroleum Eng. Department GP II Course Faculty Advisor: Dr. EunsungKan

  2. Outline

  3. Introduction

  4. MTBE

  5. GAC Adsorption

  6. Adsorbent (GAC)

  7. Regeneration by Fenton’s Oxidation • GAC loses its adsorption capacity due to MTBE accumulation; so GAC must be replaced or regenerated • Reaction of H2O2 and ferrous ion (Fe2+) produces ·OH radical which is a powerful oxidant that attacks organic contaminants in the surface of GAC

  8. Mechanism of Fenton’s Oxidation • Desorption of MTBE from solid to liquid phase • MTBE diffusive transport outward the pores then through the film • H2O2 diffusive transport from the bulk solution through the film into the GAC pores • MTBE and H2O2 mixing in bulk solution • H2O2 reacts with immobilized Fe resulting in the formation of ·OH which results in oxidation of MTBE

  9. Procedure for Fenton-driven Carbon Regeneration (2) Fe impregnation onto carbon H2O2 Contaminants in water (4) Oxidation of contaminants (3) Adsorption of contaminants Fe2+ in solution (1)Virgin or regenerated activated carbon

  10. Process Flow Diagram Process at start up (Adsorption only)

  11. The proposed process ( adsorption and regeneration)

  12. Material Balance & Energy Balance

  13. Energy Balance

  14. Pump Design Selected type is centrifugal pump:

  15. Mixing Tank Design

  16. CarbonCapture

  17. Discussion & Perceived Problems 1) Mixing: Fluidized bed Packed bed • Applying H2O2 whichgenerate significant amount of O2 bubbles from H2O2 decomposition

  18. 2) Intra-particle diffusion limitation: To increase temperature and decrease particle size of GAC for minimizing intra-particle diffusion limitation

  19. Cost Estimation Capital Cost

  20. Cost Estimation Capital Cost

  21. Cost Estimation Capital Cost

  22. Cost Estimation Capital Cost

  23. Cost Estimation Capital Cost

  24. Cost Estimation Operating Cost

  25. Cost Estimation Operating Cost

  26. Cost EstimationOperating Cost

  27. Feasibility Study

  28. Ethical Issues

  29. Safety and Environmental Issues Chemicals involved in the process:

  30. Consequences of releasing these chemicals to environment:

  31. HAZOP Study

  32. HAZOP study Steps

  33. HAZOP Study for Adsorption Process

  34. HAZOP Study for Regeneration Process

  35. Conclusion

  36. Recommendations

  37. Thanks for listening

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