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Establishing cycling processes in an experimental model of a closed ecosystem / A. Tikhomirov, S. Ushakova, N. Tikhomirova [et al.] // Acta Astronaut. - 2020. - Vol. 166: 21st International-Academy-of-Astronautics (IAA) Humans in Space (NOV 27-30, 2017, Shenzhen, PEOPLES R CHINA). - P537-544, DOI 10.1016/j.actaastro.2018.08.023. - Cited References:18. - The study was supported by the Russian Science Foundation, Russia (Project No. 14-14-00599 Pi) and carried out in the IBP SB RAS at FRCKRC SB RAS. No competing financial interests exist. . - ISSN 0094-5765. - ISSN 1879-2030

РУБ Engineering, Aerospace
Рубрики:
BIOREGENERATIVE LIFE-SUPPORT
   EXCHANGE
   WASTES
   MASS
Кл.слова (ненормированные):
Experimental model of the closed ecosystem -- Oxidation of human and plant -- wastes -- Plant productivity -- Cycling
Аннотация: The purpose of this study was to investigate mass exchange processes in the experimental model of a closed ecological system intended for an estimated portion of a human in the long-duration (several-month) experiment. The diversity of the vegetable crop community in the system was increased, human wastes were involved in mass exchange processes, and human respiration was periodically connected to the system. The system has been designed to test different prospective technologies for future closed life support systems intended for prolonged autonomous operation in space and terrestrial applications. Three methods of plant cultivation in the conveyer mode have been used: hydroponics on expanded clay aggregate, growing plants on the soil-like substrate, and plant cultivation in aquaculture. The technology of more effective oxidation of organic wastes in a physicochemical processing reactor has been developed. A human exhaled the air into the system and consumed the air from the system. O-2 concentration did not drop below 20.8% and did not rise above 22.6%. CO2 concentration varied between 800 ppm and 2500 ppm. Plants growing under this CO2 range at a preset light irradiance showed optimal photosynthetic activity. The closure coefficients for Ca, Mg, S, N, K and P were above 90%. However, compared with the inflow, only 55% Ca, about 80% Mg, and 75% Na and P were removed from the system. The technological processes developed in this study will need to be modified and improved before they can be used in a full-scale closed biotechnical life support system intended for prolonged operation.

WOS
Держатели документа:
RAS, Inst Biophys, Krasnoyarsk Sci Ctr, Fed Res Ctr,SB, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Tikhomirov, Alexander; Ushakova, Sofya; Tikhomirova, Natalia; Velichko, Vladimir; Trifonov, Sergey; Anishchenko, Olesya; Russian Science Foundation, RussiaRussian Science Foundation (RSF) [14-14-00599Pi]

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