MODO stands for Mobile Ecotechnology Demonstration Object. The MODO shows how we can save water and keep it in a closed cycle. Inside the trailer is a urine-diverting dry toilet and a recirculating washing machine. Our researchers are investigating how the water can be purified after washing and reused for washing. Water losses are replenished with rainwater. Thanks to a photovoltaic system on the roof of the trailer, this concept makes it possible to develop a laundromat that is completely independent of the central water and electricity supply. This innovation is currently being developed into a marketable solution in South Africa as part of the LaundReCycle project. In the scope of scientific experiments, the faeces are converted to biochar by pyrolysis and used in agriculture to improve the soil. If no experiments are running, the faeces are composted in a worm composter. In both ways, the nutrients are returned to the nutrient cycle.