Our vision in words
The Food & Energy Campus is connecting renewable energies with the operation of aquaculture and aquaponics as well as ecological horticulture. It is a matter of heart for us to unconditionally respect and synergistically utilize natural energy, material and life cycle circuits. Every supposed waste product of a process is used as raw material in a next production step to avoid the loss of resources.
With the help of a modern pyrolysis module, we will transform the fermentation residues of the biogas plant into biochar with a gain of energy. The formed biochar will be used in the filtration systems of aquaculture to clean the water and to get enriched with nutrients. The nutrient-enriched biochar is a very nutritious material suitable for the production of fertile soil substrates called Pallaterra. Besides improvement in soil fertility, the production of Pallaterra is a reliable method for carbon sequestration: CO2 is removed from the atmosphere and sequestered to the soil, that helps to remove the climate relevant gas from the atmosphere.
Digestates consist of 96 % water. When these water-containing fermentations are applied as fertilizer on agricultural land, about 1,000 truckloads are currently needed annually. In future, the liquid fermentation residues are to be separated into pure water and solids by modern filter technologies, and the solid phase is then converted into biochar via pyrolysis. By separating and “refining” the digestates on site, the traffic volume of the region will be greatly relieved in future. We estimate that we will be able to reduce the previous 1000 truckloads per year to less than 25 in the future.
The sustainability of our system is supported by the use of modern, energy-efficient greenhouses, where waste heat from the power plant of the biogas reactor will allow a year-round production of vegetables.