和広 飯塚's team

Chlorella and Bacillus
Chlorella repeats rapidly by photosynthesis, so its proliferative power is very active. It also lives in suspension. It can also be purified by culturing with a so-called manure withdrawal solution from which solids in manure have been removed. In addition, the proliferation of chlorella ingests CO2 in water and emits O2 by carbon assimilation. It is a means to maintain the life system on board by securing O2 in the spacecraft and treating manure of the crew. However, it can be said that the solid content of manure is difficult to decompose. Example) When chlorella is put in an aqueous solution of carbon dioxide and exposed to light, photosynthesis is performed and oxygen is actively released. As a result of searching for and culturing microorganisms existing in the soil of the natural world, the useful microorganism BB (Bacillus) decomposes at a high temperature aerobic microorganism mainly composed of Bacillus about 5 times faster than the normal temperature aerobic microorganism. It is known that it has, and it starts its activity by water, propagates and continues to flow out, decomposes urine odor and urinary stones in the toilet, and decomposes and ingests organic substances such as sugar, protein, and fat.

4. Mixing manure, LED light and microorganisms
It is thought that it is possible to treat feces and secure oxygen O2 by using an LED light as shown in the figure on the right as visible light and putting a mixture of chlorella and Bacillus into the fecal tank collected at the International Space Station. As the LED light source, red and blue light, which is visible light, is used as the light required for plant growth. These two colors have different effects.
Red: Effect of promoting photosynthesis
Blue: Effect of forming large leaves and fruits
The amount of LED light needs to be 1000-1500 lux. The tank should have a peephole so that the processing status and oxygen O2 generation status can be confirmed.

5. Supplement
KOUKI Space Technologies Co., Ltd. has started elementary research on carbon nanotubes and carbon nanowires made from garbage (organic matter) and Styrofoam. In the future, we are aiming for industrialization by acquiring research budget and human resources.