Estimate transport cost savings, reduced landfill fees, and biogas revenue from dewatering brewery spent grain.
Raw spent grain contains ~80% water. Dewatering to 30% solids reduces mass by over 40%, cutting transport and disposal costs while unlocking biogas potential.
Total hectolitres per year
kg of wet grain per hectolitre
£ per tonne of wet grain
£ per tonne per km
One-way km to disposal site
Spent grain at 80% moisture contains 800 kg water per tonne. Dewatering to 30% solids removes ~333 kg of water per tonne of raw grain.
With ~40% mass reduction, fewer truck loads are required. At £0.35/tonne/km over 50 km, savings compound quickly for high-volume breweries.
Dewatered grain still contains volatile solids. Anaerobic digestion can yield 300-400 m³ biogas per tonne VS, displacing purchased natural gas.
Multi-disc screw presses achieve 20-35% cake solids with low energy (0.5-2 kWh/tonne). Containerised units allow pilot testing before commitment.
Belt presses, centrifuges, screw presses, and multi-disc dewatering systems.
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Open CalculatorEvery brewery's grain composition differs. Our containerised pilot dewatering unit can run on your site for 2-4 weeks to generate exact performance data.