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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ushakova S.A., Tikhomirov A.A., Tikhomirova N.A., Kudenko Y.A., Litovka Y.A., Anishchenko O.V.
Заглавие : A biological method of including mineralized human liquid and solid wastes into the mass exchange of bio-technical life support systems
Место публикации : Advances in Space Research. - 2012. - Vol. 50, Is. 7. - С. 932-940. - ISSN 02731177 (ISSN) , DOI 10.1016/j.asr.2012.05.023
Ключевые слова (''Своб.индексиров.''): bio-technical life support system--conveyor-grown uneven-aged communities of wheat and salicornia--utilization of human wastes--age groups--biological methods--dry weight--expanded clay--harvest index--human waste--leafy vegetables--liquid wastes--mass exchange--mineral element--nutrient solution--plant communities--salicornia europaea--salt content--time interval--uneven-aged--water culture--wheat biomass--conveyors--incineration--irrigation--minerals--nutrients--plants (botany)--productivity--sodium chloride--waste incineration--waste utilization--liquids
Аннотация: The main obstacle to using mineralized human solid and liquid wastes as a source of mineral elements for plants cultivated in bio-technical life support systems (BLSS) is that they contain NaCl. The purpose of this study is to determine whether mineralized human wastes can be used to prepare the nutrient solution for long-duration conveyor cultivation of uneven-aged wheat and Salicornia europaea L. plant community. Human solid and liquid wastes were mineralized by the method of "wet incineration" developed by Yu. Kudenko. They served as a basis for preparing the solutions that were used for conveyor-type cultivation of wheat community represented by 5 age groups, planted with a time interval of 14 days. Wheat was cultivated hydroponically on expanded clay particles. To reduce salt content of the nutrient solution, every two weeks, after wheat was harvested, 12 L of solution was removed from the wheat irrigation tank and used for Salicornia europaea cultivation in water culture in a conveyor mode. The Salicornia community was represented by 2 age groups, planted with a time interval of 14 days. As some portion of the nutrient solution used for wheat cultivation was regularly removed, sodium concentration in the wheat irrigation solution did not exceed 400 mg/L, and mineral elements contained in the removed portion were used for Salicornia cultivation. The experiment lasted 4 months. The total wheat biomass productivity averaged 30.1 gВ·m -2В·day -1, and the harvest index amounted to 36.8%. The average productivity of Salicornia edible biomass on a dry weight basis was 39.3 gВ·m -2В·day -1, and its aboveground mass contained at least 20% of NaCl. Thus, the proposed technology of cultivation of wheat and halophyte plant community enables using mineralized human wastes as a basis for preparing nutrient solutions and including NaCl in the mass exchange of the BLSS; moreover, humans are supplied with additional amounts of leafy vegetables. В© 2012 COSPAR. Published by Elsevier Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov A.A., Ushakova S.A., Velichko V.V., Tikhomirova N.A., Kudenko Y.A., Gribovskaya I.V., Gros J.-B., Lasseur C.
Заглавие : Assessment of the possibility of establishing material cycling in an experimental model of the bio-technical life support system with plant and human wastes included in mass exchange
Место публикации : Acta Astronautica. - 2011. - Vol. 68, Is. 9-10. - С. 1548-1554. - ISSN 00945765 (ISSN) , DOI 10.1016/j.actaastro.2010.10.005
Ключевые слова (''Своб.индексиров.''): biological-technical life support system--photosynthesizing unit--utilization of plant and human wastes--biological substrates--chemical component--experimental models--human waste--life support systems--mass exchange--mass transfer process--material cycling--photosynthesizing unit--physicochemical methods--pilot model--plant biomass--plant wastes--recycled products--salicornia europaea--simultaneous use--soil-like substrate--utilization of plant and human wastes--sodium chloride--substrates--waste incineration--waste utilization
Аннотация: A pilot model of a bio-technical life support system (BTLSS) including human and plant wastes has been developed at the Institute of Biophysics SB RAS (Krasnoyarsk, Russia). This paper describes the structure of the photosynthesizing unit of the system, which includes wheat, chufa and vegetables. The study substantiates the simultaneous use of neutral and biological substrates for cultivating plants. A novel physicochemical method for the involvement of human wastes in the cycling has been employed, which enables the use of recycled products as nutrients for plants. Inedible plant biomass was subjected to biological combustion in the soil-like substrate (SLS) and was thus involved in the system mass exchange; NaCl contained in native urine was returned to the human through the consumption of Salicornia europaea, an edible salt-concentrating plant. Mass transfer processes in the studied BLSS have been examined for different chemical components. В© 2009 Elsevier Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov A.A., Kudenko Y.A., Ushakova S.A., Tirranen L.S., Gribovskaya I.A., Gros J.-B., Lasseur C.
Заглавие : Use of human wastes oxidized to different degrees in cultivation of higher plants on the soil-like substrate intended for closed ecosystems
Место публикации : Advances in Space Research. - 2010. - Vol. 46, Is. 6. - С. 744-750. - ISSN 02731177 (ISSN) , DOI 10.1016/j.asr.2010.02.024
Ключевые слова (''Своб.индексиров.''): life support systems--microflora--mineralized human wastes--phototrophic unit--wet incineration--alternating electromagnetic field--bioregenerative life support systems--degree of oxidations--denitrifying microorganisms--growth and development--higher plants--human waste--life support systems--mass exchange--microbiotas--microflora--microscopic fungi--mineralized human wastes--nutrient solution--oxidation level--phytopathogenic bacteria--plant productivity--soil-like substrate--wheat plants--biomolecules--electromagnetic fields--irrigation--magnetic field effects--metabolism--metabolites--oxidation--plants (botany)--soils--solvent extraction--wastes--waste incineration
Аннотация: To close mass exchange loops in bioregenerative life support systems more efficiently, researchers of the Institute of Biophysics SB RAS (Krasnoyarsk, Russia) have developed a procedure of wet combustion of human wastes and inedible parts of plants using H2O2 in alternating electromagnetic field. Human wastes pretreated in this way can be used as nutrient solutions to grow plants in the phototrophic unit of the LSS. The purpose of this study was to explore the possibilities of using human wastes oxidized to different degrees to grow plants cultivated on the soil-like substrate (SLS). The treated human wastes were analyzed to test their sterility. Then we investigated the effects produced by human wastes oxidized to different degrees on growth and development of wheat plants and on the composition of microflora in the SLS. The irrigation solution contained water, substances extracted from the substrate, and certain amounts of the mineralized human wastes. The experiments showed that the human wastes oxidized using reduced amounts of 30% H2O2: 1 ml/g of feces and 0.25 ml/ml of urine were still sterile. The experiments with wheat plants grown on the SLS and irrigated by the solution containing treated human wastes in the amount simulating 1/6 of the daily diet of a human showed that the degree of oxidation of human wastes did not significantly affect plant productivity. On the other hand, the composition of the microbiota of irrigation solutions was affected by the oxidation level of the added metabolites. In the solutions supplemented with partially oxidized metabolites yeast-like microscopic fungi were 20 times more abundant than in the solutions containing fully oxidized metabolites. Moreover, in the solutions containing incompletely oxidized human wastes the amounts of phytopathogenic bacteria and denitrifying microorganisms were larger. Thus, insufficiently oxidized sterile human wastes added to the irrigation solutions significantly affect the composition of the microbiological component of these solutions, which can ultimately unbalance the system as a whole. В© 2010 COSPAR. Published by Elsevier Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov A.A., Ushakova S.A., Velichko V.V., Zolotukhin I.G., Shklavtsova E.S., Lasseur C., Golovko T.K.
Заглавие : Estimation of the stability of the photosynthetic unit in the bioregenerative life support system with plant wastes included in mass exchange
Место публикации : Acta Astronautica. - 2008. - Vol. 63, Is. 7-10. - С. 1111-1118. - ISSN 00945765 (ISSN) , DOI 10.1016/j.actaastro.2007.12.025
Ключевые слова (''Своб.индексиров.''): blss--mass exchange--plant wastes--agricultural products--air pollution--biological materials--biomass--environmental engineering--estimation--experiments--human engineering--incineration--renewable energy resources--space research--substrates--system stability--bioregenerative--life-support systems--mass exchanges--plant biomass--plant productivity--plant wastes--radish plants--significant reduction--soil like substrates--wheat straws--waste incineration
Аннотация: The purpose of this study is to estimate the possible effect produced on plant productivity by inedible plant biomass added to soil-like substrate (SLS). Results of the experiments with radish plants grown on the SLS with inedible biomass of carrot and beet plants added in the amounts roughly equal to their yields harvested from the same area showed a significant reduction in productivity of radish plants. The yield of radish plants grown on the SLS with added radish tops was almost the same as the yield of the radish grown on the neutral substrate. Experiments with addition of dry wheat straw to the SLS and growing of wheat and radish plants on that substrate also showed that the productivity of the plants grown in that way was decreased. Attempts to negate the adverse effect of plant wastes proved that the most effective way was to mineralize the wastes using the technique of "wet incineration". В© 2008 Elsevier Ltd. All rights reserved.
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Tikhomirov A.A., Gitelson J.I., Ushakova S.A., Kovaleva N.P., Tikhomirova N.A., Gribovskaya I.V.
Заглавие : The possible way of introducing mineral elements of liquid human wastes into the material cycle in biological life support systems
Место публикации : International Astronautical Federation - 55th International Astronautical Congress 2004. - 2004. - Vol. 3: International Astronautical Federation - 55th International Astronautical Congress 2004 (4 October 2004 through 8 October 2004, Vancouver) Conference code: 69653. - С. 1442-1448
Ключевые слова (''Своб.индексиров.''): biomass--body fluids--hydrogen peroxide--life support systems (spacecraft)--solid wastes--biological life support systems--intrasystem material cycle--liquid human wastes--plant biomass--waste management
Аннотация: Along with the atmosphere, water and food regeneration processes in biological life support systems it is important to provide units and links responsible for utilization of unused plant biomass, human wastes and returning, if possible, the most of wastes into the intrasystem material cycle. The experience on construction of biological life support systems (BLSS) gained by the Institute of Biophysics SB RAS (Krasnoyarsk, Russia) allows us to suggest constructing an integrated biological-physical-chemical life support system with the biological unit predominating. It is possibly to partially mineralize urine and solid wastes by "wet incineration" by hydrogen peroxide in electric field. We suggest decomposing urea by a urease-enzymatic method using soybean or canavalia flour containing sufficient amount of urease. Consumption of 1.5 g of flour for decomposition of urea in daily urine and the possibility of producing flour from soybeans and canavalia grown inside the system make this method of urea decomposition rather prospective. Further ammonia distillation using the nitrification unit and evaporation of solution would make possible to return nitrogen and water back into the intrasystem cycle. Probably, in long-duration space expeditions the utilization of urine would be confined only by extraction of nitrogen and water from urine with further removal of dry residue to the stock, as the problem of returning sodium chloride into the intrasystem cycling has not been solved yet. As all biogenic elements contained in urine (except nitrogen) get lost at that, the solution of the problem with introducing NaCl and mineral elements into the cycle with the help of halophyte plants Salicornia europaea are of sufficient interest. This work presents the experimental results of growing Salicornia europaea on model solutions containing biogenic elements in the amounts equivalent to their content in urine and on urine, which undergone physically-chemically treatment by peroxide and ammonia distillation after urease-enzymatic decomposition. Taking into consideration that the mineral elements content in urine can vary, 2 variants of model solutions were used. In the first variant the content of P was 8-fold, S - 7-fold, K - 8-fold higher than in Knop's solution; the content of Ca and Mg almost complied with that in Knop's solution. In the variant P was 12-fold, S - 17-fold, K - 17-fold, Ca - 6-fold and Mg was 8-fold higher than in Knop's solution. The content of N and NaCl in both variants was the same and constituted 0.18 g/l and 10 g/l respectively. The results of carried experiments showed that growing plants on urine treated in the above-mentioned way is possible; though the productivity of plants would be less than on model solutions. The reasons of plant productivity drop and the possible ways of their removal have been discussed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov A.A., Ushakova S.A., Manukovsky N.S., Lisovsky G.M., Kudenko Yu.A., Koyalev V.S., Gribovskaya I.V., Tirranen L.S., Zolotukhin I.G., Gros J.B., Lasseur Ch.
Заглавие : Synthesis of biomass and utilization of plants wastes in a physical model of biological life-support system
Место публикации : Acta Astronautica. - 2003. - Vol. 53, Is. 4-10. - С. 249-257. - ISSN 00945765 (ISSN) , DOI 10.1016/S0094-5765(03)00137-1
Ключевые слова (''Своб.индексиров.''): ecosystems--microorganisms--ph--photosynthesis--plants (botany)--synthesis (chemical)--waste utilization--biological life support systems (blls)--gas exchange--plant respiration--biomass--carbon dioxide--agaricales--article--biomass--bioremediation--growth, development and aging--hydroponics--incineration--metabolism--methodology--microbiology--microclimate--photosynthesis--plant physiology--radish--space flight--waste management--weightlessness--wheat--agaricales--biodegradation, environmental--biomass--carbon dioxide--ecological systems, closed--environmental microbiology--hydroponics--incineration--life support systems--photosynthesis--plant physiology--raphanus--space flight--triticum--waste management--weightlessness
Аннотация: The paper considers problems of biosynthesis of higher plants' biomass and "biological incineration" of plant wastes in a working physical model of biological LSS. The plant wastes are "biologically incinerated" in a special heterotrophic block involving Califomian worms, mushrooms and straw. The block processes plant wastes (straw, haulms) to produce soil-like substrate (SLS) on which plants (wheat, radish) are grown. Gas exchange in such a system consists of respiratory gas exchange of SLS and photosynthesis and respiration of plants. Specifics of gas exchange dynamics of high plants - SLS complex has been considered. Relationship between such a gas exchange and PAR irradiance and age of plants has been established. Nitrogen and iron were found to the first to limit plants' growth on SLS when process conditions are deranged. The SLS microflora has been found to have different kinds of ammonifying and denitrifying bacteria which is indicative of intensive transformation of nitrogen-containing compounds. The number of physiological groups of microorganisms in SLS was, on the whole, steady. As a result, organic substances - products of exchange of plants and microorganisms were not accumulated in the medium, but mineralized and assimilated by the biocenosis. Experiments showed that the developed model of a man-made ecosystem realized complete utilization of plant wastes and involved them into the intrasystem turnover. В© 2003 International Astronautical Federation. Published by Elsevier Science Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gitelson J.I., V B., Grigoriev A.I., Lisovsky G.M., Manukovsky N.S., Sinyak Y.u.E., Ushakova S.A.
Заглавие : Biological-physical-chemical aspects of a human life support system for a lunar base
Место публикации : Acta Astronautica. - 1995. - Vol. 37, Is. C. - С. 385-394. - ISSN 00945765 (ISSN)
Ключевые слова (''Своб.индексиров.''): animal--aquaculture--article--biomass--construction work and architectural phenomena--cyprinodontiformes--filtration--growth, development and aging--human--microbiology--microclimate--moon--nutritional value--photoperiodicity--plant--space flight--standard--tilapia--waste management--water management--wheat--animals--aquaculture--biomass--cyprinodontiformes--ecological systems, closed--facility design and construction--filtration--humans--life support systems--moon--nutritive value--photoperiod--plants, edible--space flight--tilapia--triticum--waste management--water microbiology--water purification
Аннотация: To create a life support system based on biological and physical-chemical processes is the optimum solution providing full-valued condidtions for existence and efficient work of people at a lunar base. Long-standing experinece in experimental research or closed ecosystems and their components allows us to suggest a realistic functional structure of the lunar base and to estimate qualitatively its parameters. The original restrictions are as follows: 1) the basic source of energy to support the biological processes has to be the solar radiation; 2) the initial amount of basic biological elelments forming the turnover of substances (C, O, H, P, K, N) has to be delivered from Earth; 3). Moon materials are not to be used in the biological turnover inside the base; 4) the base is to supply the crew fully with atmosphere and water, and with 90% (A scenario) or 40% (B scenario) of food. Experimental data about the plant productivity under the "Moon" rhythm of light and darkness allow us to suggest that the A scenario requires per one human: plant area - 40 m2 irradiated during the lunar day by 250-300 W/m2 PAR producing 1250 g of dry biomass a terrestrial day; a heterotrophic component of "biological incineration" of inedible plant biomass (800 g/day) including the aquaculture of fish to produce animal products and contaminating the environment less than birds and mammals, and the culture of edible mushrooms; a component of physical-chemical correction for the LSS envi ronment including the subsystems of: deep oxidation of organic impurities in the atmosphere and of water, organic wastes of human activity and that biological components (420 g/day) Co2 concentration in "Moon" nights, damping O2 in "Moon" days, etc. The stock of presotred or delivered from Earth substances (food additions, seeds, etc.) to be involved in biological turnover is to be about 50 kg/year per man. Increase of the mass of prestored substances per man up to 220 kg/year would reduce twice the plant area and consumed amount of radiant energy to exclude the components of "biological incineration" and physical-chemical destruction of organic wastes. В© 1995.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bartsev S.I., Gitelson J.I., Lisovsky G.M., Mezhevikin V.V., Okhonin V.A.
Заглавие : Perspectives of different type biological life support systems (BLSS) usage in space missions
Место публикации : Acta Astronautica. - 1996. - Vol. 39, Is. 8. - С. 617-622. - ISSN 00945765 (ISSN) , DOI 10.1016/S0094-5765(97)00012-X
Ключевые слова (''Своб.индексиров.''): article--bacterium--comparative study--construction work and architectural phenomena--environmental planning--green alga--human--instrumentation--mathematics--microclimate--moon--plant--quality of life--space flight--standard--weightlessness--algae, green--bacteria--ecological systems, closed--environment design--environment, controlled--facility design and construction--humans--life support systems--mathematics--moon--plants--quality of life--space flight--weightlessness--biology--life support systems (spacecraft)--spreadsheets--biological life support systems (blss)--lunar missions
Аннотация: In the paper an attempt is made to combine three important criteria of LSS comparison: minimum mass, maximum safety and maximum quality of life. Well-known types of BLSS were considered: with higher plant, higher plants and mushrooms, microalgae, and hydrogen-oxidizing bacteria. These BLSSs were compared in terms of "integrated" mass for the case of a vegetarian diet and a "normal" one (with animal proteins and fats). It was shown that the BLSS with higher plants and incineration of wastes becomes the best when the exploitation period is more than 1 yr. The dependence of higher plants' LSS structure on operation time was found. Comparison of BLSSs in terms of integral reliability (this criterion includes mass and quality of life criteria) for a lunar base scenario showed that BLSSs with higher plants are advantageous in reliability and comfort. This comparison was made for achieved level of technology of closing and for perspective one. В© 1997 Elsevier Science Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirov A.A., Ushakova S.A., Manukovsky N.S., Lisovsky G.M., Kudenko Y.A., Kovalev V.S., Gribovskaya I.V., Tirranen L.S., Zolotukhin I.G., Gros J.B., Lasseur C...
Заглавие : Synthesis of biomass and utilization of plants wastes in a physical model of biological life-support system
Колич.характеристики :9 с
Место публикации : Acta Astronaut.: PERGAMON-ELSEVIER SCIENCE LTD, 2003. - Vol. 53: 53rd Congress of the International-Astronautical-Federation (IAF) (OCT 10, 2002, HOUSTON, TEXAS), Is. 04.10.2013. - P249-257. - ISSN 0094-5765, DOI 10.1016/S0094-5765(03)00137-1
Примечания : Cited References: 16
Аннотация: The paper considers problems of biosynthesis of higher plants' biomass and "bioloaical incineration" of plant wastes in a working physical model of biological LSS. The plant wastes are "biologically incinerated" in a special heterotrophic block involving Californian worms, mushrooms and straw. The block processes plant wastes (straw, haulms) to produce soil-like substrate (SLS) on which plants (wheat, radish) are grown. Gas exchange in such a system consists of respiratory gas exchange of SLS and photosynthesis and respiration of plants. Specifics of gas exchange dynamics of high plants - SLS complex has been considered. Relationship between such a gas exchange and PAR irradiance and age of plants has been established. Nitrogen and iron were found to the first to limit plants' growth on SLS when process conditions are deranged. The SLS microflora has been found to have different kinds of ammonifying and denitrifying bacteria which is indicative of intensive transformation of nitrogen-containing compounds. The number of physiological groups of microorganisms in SLS was, on the whole, steady. As a result, organic substances - products of exchange of plants and microorganisms were not accumulated in the medium, but mineralized and assimilated by the biocenosis. Experiments showed that the developed model of a manmade ecosystem realized complete utilization of plant wastes and involved them into the intrasystem turnover. (C) 2003 International Astronautical Federation. Published by Elsevier Science Ltd. All rights reserved.
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10.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Morozov Ye. A., Trifonov S. V., Ushakova S. A., Anishchenko O. V., Tikhomirov A. A.
Заглавие : Feasibility of incorporating all products of human waste processing into material cycling in the btlss
Место публикации : Proceedings of the International Astronautical Congress, IAC. - 2017. - Vol. 4: 68th International Astronautical Congress: Unlocking Imagination, Fostering Innovation and Strengthening Security, IAC 2017 (25 September 2017 through 29 September 2017, ) Conference code: 136635. - С. 2143-2149
Ключевые слова (''Своб.индексиров.''): btlss--closure--cycling--hydroponics--nutrient availability--sediment--dissolution--energy efficiency--irrigation--life support systems (spacecraft)--plant shutdowns--sediments--space applications--waste incineration--btlss--closure--cycling--hydroponics--nutrient availability--nutrients
Аннотация: The present study addresses the ways to increase the closure of biotechnical life support systems (BTLSS) for space applications. A promising method of organic waste processing based on wet combustion in hydrogen peroxide developed at the IBP SB RAS to produce fertilizers for higher plants is discussed. The method is relatively compact, energy efficient, productive, and eco-friendly. However, about 4-6 g/L of recalcitrant sediment containing such essential nutrients as Ca, Mg, P, Fe, Cu, Mn, and Zn precipitates after the initial process. These elements are unavailable to plants grown hydroponically, thus dropping out of the cycling as deadlock products. Possible methods of dissolving that sediment have been studied. Results of experiments show that the most promising method is additional oxidation of the sediment in HNO3 + H2O2. By using the new technological process, which only involves substances synthesized inside the BTLSS material flows, more than 90% of each nutrient can be converted into the available form in irrigation solutions, thus returning them into the material cycling. The efficiency of irrigation solutions beneficiated with the mineral nutrients after the sediment dissolution has been shown. Lettuce plants grown as the test object on the newly prepared irrigation solutions produced the yield that was higher more than twice compared to the nutrient solutions prepared without the sediment conversion into a soluble state. Composition of the gases emitted during this process has been analysed. Dynamics of oxidation of small fractions of a wax-like sediment remaining after its dissolution in the BTLSS soil-like substrate has been studied. In conclusion, the entire technological chain aimed at inclusion of deadlock products of human waste wet combustion into the BTLSS cycling has been suggested and discussed. © 2017 by the International Astronautical Federation (IAF). All rights reserved.
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11.

Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Tikhomirov A. A., Trifonov S. V., Morozov E. A.
Заглавие : Developing the technology of physicochemical processing of organic waste in closed life support systems for space applications
Место публикации : IOP Conference Series: Materials Science and Engineering: Institute of Physics Publishing, 2018. - Vol. 450: 9th International Multidisciplinary Scientific and Research Conference on Modern Issues in Science and Technology Workshop in Advanced Technologies in Aerospace, Mechanical and Automation Engineering, MISTAerospace 2018 (20 October 2018 through 28 October 2018, ) Conference code: 143027, Is. 6. - , DOI 10.1088/1757-899X/450/6/062017
Ключевые слова (''Своб.индексиров.''): electric fields--environmental management--fighter aircraft--life support systems (spacecraft)--mass transfer--space applications--structural design--wastes--alternating current--combustion method--individual components--mineral nutrients--optimal parameter--physicochemical methods--technical implementation--waste processing--waste incineration
Аннотация: Closed life support systems for space applications need a technology of processing organic waste produced in the system that would enable incorporating the recycled waste into the mass transfer of the system. Researchers of the Institute of Biophysics SB RAS have developed a method of waste processing that meets these requirements: a physicochemical method of organic waste oxidation in the hydrogen peroxide aqueous solution under application of an alternating current electric field - wet combustion. The mineralized solution produced by this method can be used as a mineral nutrient supplement for higher plants in the life support system. The present study describes technical implementation of the wet combustion method and reports results of developing this method in the last few years. The study addresses problems associated with the design and positions of individual components and different configurations of the wet combustion reactor, showing the way to automate operation of the reactor and reporting optimal parameters of the current applied to the electrodes, which reduce time and power consumption by waste processing. © 2018 Institute of Physics Publishing. All rights reserved.
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