📋 Case Study
Biodiesel Production Scaling in Iowa Soybean Refinery
High glycerol waste volume, energy-intensive methanol recovery, inconsistent feedstock FFA variability
🏗️ Project Overview
Expansion of transesterification plant from 10 to 50 MMgy capacity
🎯 Challenge
High glycerol waste volume, energy-intensive methanol recovery, inconsistent feedstock FFA variability
🔧 Design Approach
Implemented enzymatic transesterification + membrane-assisted methanol/glycerol separation; co-located with anaerobic digester for glycerol valorization
📐 Design Diagram
AI-generated project design illustration
📐 Key Calculations
Renewable Carbon Fraction
Bio-Carbon / Total Carbon × 100
Result: 94.2%
Regulatory compliance for RFS2 credits
Water Usage per Gallon
Total Water / Biodiesel Output
Result: 0.8 gal/gal
Critical for drought-prone region permitting
📊 Results
Glycerol waste diverted entirely to biogas; water use reduced 62%; achieved ISCC EU certification💡 Lessons Learned
- •Enzyme stability under industrial shear conditions requires robust immobilization
- •Co-location with waste-to-energy infrastructure creates synergistic TCO advantage
✅ Key Takeaways
- 1Enzyme stability under industrial shear conditions requires robust immobilization
- 2Co-location with waste-to-energy infrastructure creates synergistic TCO advantage