Ollie van Hal

Ollie van Hal is a postdoctoral researcher at Wageningen University & Research, specializing in circular food systems and animal production sustainability. His work focuses on environmental impact assessment, feed-food competition, and optimizing resource use in agricultural systems.

Research interests include:

• Feed-food competition and resource efficiency
• Circular economy applications in livestock production
• Nitrogen management in food systems
• Sustainable dietary transitions
• Food waste valorization

Recent publications analyze nitrogen circularity in the North China Plain (2025), agricultural by-product utilization (2025-2021), and the compatibility of circular principles with dietary guidelines (2022). His work connects food systems, environmental science, and agricultural economics through interdisciplinary modeling and policy analysis.

Scientific contributions include:

• Mapping circularity challenges in animal production
• Quantifying feed-food competition trade-offs
• Developing sustainability indicators for agriculture
• Assessing dietary protein quality metrics

As co-promotor in PhD projects and active participant in professional networks, van Hal bridges research, policy, and industry applications in sustainable food production.