HAY-GREEN Sarl (HG): Powering the OLIWA Project with Circular Biogas
The Innovators Behind the Energy
Based in Tunisia, HAY-GREEN Sarl (HG) is a biotechnology R&D company specializing in Nature-Based Solutions. As a core partner in the PRIMA-funded OLIWA project, HG pioneers organic waste-to-energy pathways, specifically targeting the generation of high-yield biogas from olive residues.
The Scientific Breakthrough: Advanced Co-Digestion
Independently, agricultural and olive mill wastes can be toxic to bacteria and severely slow down gas generation. HG overcomes this barrier by engineering a highly optimized co-digestion process:
- Perfecting the Substrate: By systematically combining olive pomace, poultry manure, insect frass, and cow dung, HG achieves the ideal carbon-to-nitrogen (C/N) ratio.
- Stabilizing the Digestion: This precise blending prevents reactor acidification and perfectly stabilizes the microbial digestion process.
- Maximizing Biomethane: HG’s specialized methodology ensures superior biodegradability of the biomass, directly maximizing the daily output of high-quality, renewable biomethane (CH4).
Driving Mediterranean Impact & Dissemination
HG’s work is not limited to the laboratory; it actively translates R&D into actionable commercial practices. Their innovations directly support OLIWA’s ambitious goal of achieving at least a 25% reduction in food and agricultural waste across the Mediterranean. They are accelerating the green transition by:
- Integrating decentralized, modular energy systems directly into local olive-producing ecosystems.
- Bridging the gap between scientific research and commercial application through targeted dissemination events.
- Promoting zero-waste, circular economic models to empower local farmers, SMEs, and NGOs.