CELSSにおける廃棄物再生処理システムに関する研究

―湿式酸化処理でのウサギ糞の分解特性について―

抄録

CELSS is to be considered in constructing a closed environment for sustaining life including human beings in space stations and space colonies. The waste management system is a key subsystem of the integrated material recycling system which must be developed to support long-term manned space activity. This paper presents the results of waste processing of rabbit feces using wet oxidation of waste manegement system. It was considered 75% of N in feces were converted to N₂ gas, 60% of Ca in feces remained in the furnace and K in feces were smoothly dissolved in the solution. The insoluble residue contained most of P and Fe in feces. The wet oxidized solution contained Ni and Cr which were eluted from the furnace made of SUS. It was found that the nutrient balance of a wet oxidized solution which added P and Fe, removed Ni and Cr, were not so different compared with a hydroponic solution.