Search Results

A two-stage steam gasification and reforming process was evaluated for converting wastes generated within enclosed habitable environments into synthesis gas (CO & H2) and other recyclable inorganic species, i.e. water, CO2 and inorganic salts. Waste compounds used in the experimentation included: cellulose; urea; methionine; sucrose; butyric acid; Igepon TC-42 - a particularly (chemically) stable soap selected by NASA for use in space life support systems; wheat straw and a high density polyethylene. The compounds were tested individually and in combination to simulate the wastes anticipated within enclosed habitat environments.

Advanced regenerative Environmental Control and Life Support System (ECLSS) technology was identified by NASA as enabling for space exploration. Low Earth Orbit (LEO) mass savings of over 700,000 pounds (320,000 kg) per year are expected for a lunar outpost crew of eight as compared with ECLSS systems which are currently flying. This paper explores ECLSS technologies which show promise for reducing LEO mass for long range exploration initiatives. The roles of In-Situ Resource Utilization (ISRU) and a Closed Ecological Life Support System (CELSS) are discussed. Physical-chemical candidates for advanced technological development are recommended based on combined expendable, consumable and installed subsystem LEO mass savings for a number of advanced water processing and air revitalization approaches.