title: Lunar base CELSS design and analysis.
abstract: This paper describes the conceptual development of a hybrid biological-physical/chemical (P/C) life support system model for a lunar outpost.  It presents steps that lead to loop closure and determines mass flow characteristics for an inedible biomass enzyme reactor and an activated sludge bioreactor. Computer modeling techniques were used to determine that the cellulose reactor has the design capabilities to provide significant increases in the plant harvest index.  Activated sludge was found to fit design demands for a small, continuous-flow, steady-state system. Systems analysis and component sizing for these two bioreactors and information regarding supporting bioregenerative and physical/chemical components are presented.
authors.affiliation: McDonnell Douglas Aerospace, Huntington Beach, CA, USA.
authors.forename: R J
authors.initials: RJ
authors.lastname: Sirko
authors.forename: G C
authors.initials: GC
authors.lastname: Smith
authors.forename: L A
authors.initials: LA
authors.lastname: Hamlin
authors.forename: R
authors.initials: R
authors.lastname: Tazawa
authors.forename: T
authors.initials: T
authors.lastname: Uchida
authors.forename: S
authors.initials: S
authors.lastname: Suzuki
mesh_terms: D018533:Biomass; D019149:Bioreactors; D002480:Cellulase / Q000378:metabolism; D002482:Cellulose / Q000378:metabolism; D003198:Computer Simulation; D018504:Ecological Systems, Closed; D004783:Environmental Microbiology; D004867:Equipment Design; D005118:Extraterrestrial Environment; D005160:Facility Design and Construction; D008021:Life Support Systems / Q000295:instrumentation*; D016081:Moon; D012722:Sewage; D018511:Systems Integration; D018505:Waste Management / Q000379:methods*; D014866:Waste Products
chemical_list: D012722:Sewage; D014866:Waste Products; D002482:Cellulose; D002480:Cellulase