Approaches to resource recovery in controlled ecological life support systems

Bubenheim, David L.; Wydeven, T.

doi:10.1016/0273-1177(94)90287-9

Cited by 25 publications

(11 citation statements)

References 10 publications

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“…The oxidization takes place on the surface of catalytic electrodes under a relatively low operating temperature of about 422 K. CO 2 and N 2 will be produced at the anode and H 2 at the cathode. No atmospheric oxygen is consumed during the process and the power demand is low 21,22 .…”

Section: Electrochemical Oxidationmentioning

confidence: 99%

“…Since organic substances and oxygen are completely soluble and inorganic salts only sparingly soluble in supercritical water, SCWO can be used to separate salts from the aqueous product phase. The recycling of organic wastes with SCWO results in efficiencies greater than 99.99 % in less than 1 minute reaction time [20][21][22] .…”

Section: Supercritical Water Oxidation (Scwo)mentioning

confidence: 99%

“…The product streams of dry incineration are water condensate, inorganic ash, CO 2 and trace gases, and mainly sterile. Post-treatment with catalytic afterburners may be required to further increase the efficiency of the process and to reduce products from incomplete combustion [20][21][22] . …”

Section: Dry Incinerationmentioning

confidence: 99%

“…The process takes place in air or pure O 2 and requires no pre-drying, unlike incineration processes. WO regenerates H 2 O and essential nutrient salts for plants, produces CO 2 and reduces solid wastes to small amounts of sterile, non-degradable ash [20][21][22] .…”

Section: Wet Oxidation (Wo)mentioning

confidence: 99%

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Combination of Physico-Chemical Life Support Systems with Space Greenhouse Modules: A System Analysis

Zabel

Schubert

2013

43rd International Conference on Environmental Systems

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The cultivation of higher plants occupies an essential role within bio-regenerative life support systems. It contributes to all major functional aspects by closing the different loops in a habitat like food production, CO 2 reduction, O 2 production, waste recycling and water management. Fresh crops are also expected to have a positive impact towards the crew's psychological health. Nevertheless, plant cultivation in closed environments is challenging and further research on system, subsystem and crop level is required. The controlling and maintaining of closed environment agriculture systems such as space greenhouse modules is difficult due to lack of buffer capacity, low flexibility concerning varying crew size and eclipse periods, and the absence of backup systems in case of plant and system failures. The addition of physico-chemical (P/C) life support systems (LSS) as an intermediate system between the greenhouse module and the habitat/spacecraft has the potential to reduce or even eliminate the mentioned difficulties of greenhouse modules. This paper will investigate the potential of combining components of physico-chemical systems with greenhouse modules to increase the readiness of the latter. This would allow the creation of a more efficient life support systems by taking advantage of the experience gained in physico-chemical technologies and the related reliability and heritage of these technologies.

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Section: Electrochemical Oxidationmentioning

confidence: 99%

Section: Supercritical Water Oxidation (Scwo)mentioning

confidence: 99%

Section: Dry Incinerationmentioning

confidence: 99%

Section: Wet Oxidation (Wo)mentioning

confidence: 99%

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Combination of Physico-Chemical Life Support Systems with Space Greenhouse Modules: A System Analysis

Zabel

Schubert

2013

43rd International Conference on Environmental Systems

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“…The objective of SCWO, however, is to oxidatively destroy organic compounds in water (Bermejo & Cocero, 2006b;Jing et al, 2008). The technology was originally developed nearly 30 years ago at the Massachusetts Institute of Technology for NASA, back when it was thought there would be a human colony on the moon and a need for a single system to treat and purify water was a priority (Bubenheim & Wydeven, 1994;Modell, 1977;Modell et al, 1982;Slavin & Oleson, 1991;Sloan et al, 2008;Svanström et al, 2004;Svanström et al, 2005).…”

Section: Supercritical Water Oxidation (Scwo)mentioning

confidence: 99%