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Agenda

PRODUCTION OF HIGHLY PURIFIED BOVINE TRANSFERRIN Group 5B Arjun Goel, Connie Marcelli, Lianne Kark, Sara Dang, Vivien Tai Faculty Advisor Prof C.A. Mims. Agenda. Timetable Scope of Design Process Choice of Technology Current Challenges. Agenda. Timetable Scope of Design Process

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Agenda

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  1. PRODUCTION OF HIGHLY PURIFIED BOVINE TRANSFERRINGroup 5BArjun Goel, Connie Marcelli, Lianne Kark, Sara Dang, Vivien TaiFaculty AdvisorProf C.A. Mims

  2. Agenda Timetable Scope of Design Process Choice of Technology Current Challenges

  3. Agenda Timetable Scope of Design Process Choice of Technology Current Challenges

  4. Timetable Progress

  5. Isolation of Transferrin OBJECTIVE To isolate transferrin from bovine blood PROCESS Part A: Partial purification Paste  Intermediate Product Part B: Chromatography and Lyophilization Intermediate Product  98% Pure transferrin

  6. Agenda Timetable Scope of Design Process Choice of Technology Current Challenges

  7. Technical Design - Scope of Design - • Process Flow Diagram • Plant Layout • Choice of Technology • Process Component Specifications • Key Unit Design

  8. Operational Considerations- Scope of Design - • Hazard prevention • Pollution control • Socio-economic impact

  9. Cost Analysis - Scope of Design - • Construction costs • Operating costs • No transport or storage • NPV and IRR

  10. Feasibility Evaluation - Scope of Design - Considerations: • Technical • Environmental • Economic • Social

  11. Agenda Timetable Scope of Design Process Choice of Technology Current Challenges

  12. Part A - The Process - • Operates once a week • Run 1 shift + setup / cleanup • 18 000 g Feed  12 000 g Product + Waste • 1 batch A = 2 batches feed B

  13. Part B - The Process - • Operates twice a week • Run 2 shifts + setup/cleanup • 6 000 g Feed  350 g Transferrin + Waste

  14. Scaling - The Process - 1 batch A = 2 batches B • Part A = extraction, iron saturation, or ultrafiltration • Mostly labour intense • Part B = separation by ion chromatography • Better quality • Less waste • Smaller equipment I (E.g. DEAE column, lyophilizer) • Lower cost

  15. Economics - The Process - • Part A: 44 quality batches/year • Part B: 88 quality batches/year • Feed 18 kg/week = $1800 + Reagents • Product 700 g/week = $42 000

  16. Agenda Timetable Scope of Design Process Choice of Technology Current Challenges

  17. FILTRATION Simpler design Less operating time CENTRIFUGATION Higher costs Complex design Separation - Choice of Technology -

  18. DEPTH CARTRIDGE FILTERS Cheaper than membrane filters High flow rates Fibers released into the filtrate HYDROPHILIC MEMBRANE CARTRIDGE FILTERS Particles are retained on surface Plugs more quickly than depth filters Prefiltration - Choice of Technology -

  19. TURBULENCE PROMOTED: Dissolved solids Minimize pumping requirements Eddy stresses and cavitation OPEN CHANNEL: High concentration of solids High degree of recirculation High shear rates Ultrafiltration - Choice of Technology -

  20. Ultrafiltration Configurations - Choice of Technology - HOLLOW FIBER: • Operate at low pressure • High shear rate FLAT SHEET: • High shear rate • Lower boundary-layer resistance SPIRAL-WOUND: • Higher pressure drop • Greater resistance to flux • Difficult to sterilize

  21. Ultrafilter Membranes - Choice of Technology - CELLULOSIC MEMBRANES • Bind the least amount of protein POLYSULFONE • Less susceptible to damage by extremes of Temperatures and pH CERAMIC • More expensive

  22. TANGENTIAL FLOW FILTRATION Retentate Buffer Tank Feed Tank Feed TFF Used for Diafiltration

  23. Agenda Timetable Scope of Design Process Choice of Technology Current Challenges

  24. Current Challenges- Choice of Technology - • Economics • Flux rate • Ease of maintenance

  25. Current Challenges- Process Flow Diagram - • Layout design • Composition of streams for batch process • Composition of intermediate streams • Representation of lyophilization units • Delivery of solid reagents

  26. Next Steps • Selection of Key Unit • Frozen PFD • Equipment Selection • Plant Tour on October 11, 2001

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