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

摘要

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. In an examination, using chaff as substitute for inedible plant parts, the carbonization of 400 g of the chaff generated 170-175 g of carbonized substances, and it generated 54-76 g of ash residue in the subsequent incineration process. In the exhaust gas processing unit, satisfactory capability of CO{sub}2 separation could not be realized because of the influence of moisture in the exhaust gas. However, several measures to solve these problems were adopted in an experiment in 2007.