In the Netherlands, the Water Authorities want to contribute to the transition to a more circular and sustainable economy. Within the waste water treatment plants, they regard sewage as a source for energy and raw materials. One of focus areas looks at the potential of cellulose as a valuable resource. This project has explored the possibilities of using cellulose from sewage and roadside weeds to produce mycelium composites. The natural fibers are bound by the growth of the fungi. Mycelium composites can be used as sustainable building materials and / or insulation material.

Several recipes in combination with different types of fungi have been tested. The materials produced from the processing experiment have been studied for their material properties (compressive strength, bending strength and thermal insulation).