Turning waste into renewable energy
Dalkia has developed the world’s first drying system for Dutch coffee roaster Douwe Egberts Master Blenders (DEMB).
AN INNOVATIVE SOLUTION TO RECYCLE COFFEE GROUNDSAt its Joure plant in the Netherlands, DEMB (formerly Sara Lee) was looking to reduce the cost of producing the vast quantities of steam needed to make instant coffee and liqueurs. Dalkia set out to develop a cost-effective solution to support the plant's increasing production capacity while reducing its carbon footprint and meeting the critical challenge of recycling by-products from the production process.
CLEAN, COST-EFFECTIVE FUELFollowing an in-depth study, Dalkia developed an unparalleled, innovative drying and combustion system in which spent coffee grounds from the plant's processes are burned in a biomass boiler to produce steam. Dalkia was also contracted to provide comprehensive technical management of industrial utilities including steam, compressed air and cold water in partnership with Veolia Water for wastewater treatment.
DEMB Technical Director for the Joure plant in the Netherlands
“Before the Dalkia project, our two main energy sources were natural gas and coffee grounds on a small scale. Dalkia has helped us save on natural gas by using more grounds. This has led to savings of between €1 and €2 million.”
33,000 t/y of spent coffee grounds used as an energy source
Smaller carbon footprint
- 70% reduction in annual CO2 emissions from the plant, totaling 14,000 metric tons
- Lower energy bills and production costs
- Recovery of a by-product from the production process
- Reliable industrial utilities
- Producing energy from biomass (a by-product of the production process)
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