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Technical Paper

Circulation of Water in Addition to CO2, O2 and Plant Biomass in an Artificial Ecosystem Comprised of Humans, Goats and Crops During Three 2-Weeks Closed Habitation Experiments Using CEEF

2007-07-09
2007-01-3091
The Closed Ecology Experiment Facilities (CEEF) were installed to collect data for realistic estimation of radiocarbon transfer in the ecosystem. Two-week experiments were conducted three times from September to November of 2006, in which two human subjects called as eco-nauts were enclosed and worked in an airtight facility, the CEEF. The eco-nauts were changed after a week from beginning of each experiment. In these experiments, a Plant Module (PM) with 23 crops, including rice, soybean, peanut, and sugar beet, was connected to an Animal & Habitation Module (AHM) which included the eco-nauts and two goats. 91.8-94.6% (by weight) of the food consumed by the eco-nauts and 79% of the feed to the goats (straw, leaf and bran of rice, leaf and stem of soybean, and leaf, stem and shell of peanut) were produced from crops in the PM. Amount of oxygen produced by the crops was more than the amount consumed by respiration of human and animals in these experiments.
Technical Paper

Research and Development of Operation Technology on the Waste Processing System of the Closed Ecology Experiment Facilities for Circulation of Carbon in an Experimental Closed Ecosystem Comprised of Humans, Goats and Crops

2008-06-29
2008-01-1979
Before a series of overall material circulation in an experimental system including crops, animals and humans, technical examinations for the development of a waste processing system were conducted for incorporating the system to the Closed Ecology Experiment Facilities (CEEF). The examinations are intended to validate the function of the carbonization and incineration processing units which were installed in the CEEF in 2006. Using different mock-up samples, examinations have been carried out to verify the function and capability of the whole system, including the waste carbonization processing unit, incineration processing unit, exhaust gas tank and the exhaust gas processing unit. In an examination using filter paper pulp as a mock-up sample, processing time in each unit was checked. The processing times needed for carbonization and incineration processing were 5.7 and 2.6 hours, respectively.
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