A significant portion of waste is of biological origin, making it suitable for bacteria as a food source. A material scientist from the University of Tartu has crafted 3D-printed 'hotels' for microbes as part of his doctoral research, allowing these organisms to live, operate, and convert waste into valuable products without interference from the external environment. Hans Priks, the junior researcher in material science, emphasizes the growing interest in finding new value in resources that are typically incinerated or composted, particularly from agricultural processes like straw generated during harvests, as well as from wastewater treatment.

Priks is particularly interested in using organic waste, which is abundant in both agriculture and sewage treatment, as nourishment for microbes to transform these materials into something new and beneficial. For instance, he points out that even cotton clothes, which are composed of cellulose, can be broken down to release glucose, a preferred nutrient for microbes. This innovative approach not only seeks to address waste management issues but also opens up avenues for sustainable practices in various industries.

The implications of Priks's research could extend far beyond our planet. By creating a system where bacteria can efficiently process organic waste in space, the technology could contribute significantly to waste reduction and resource recycling for future human missions to other planets. This pioneering work exemplifies the intersection of environmental science and space exploration, highlighting how novel solutions to waste management could be crucial for sustainability in extraterrestrial habitats.