The effects of the frequency and waveform of the activating current on physicochemical oxidation of organic wastes. (April 2015)

• Record Type: Journal Article
• Authors: Morozov, Yegor; Kudenko, Yurii; Trifonov, Sergey; Tikhomirov, Alexander
• Is Part Of: Life sciences in space research. Volume 5(2015)
• Page Start: 53
• Page End: 56
• Publication Date: 2015-04
• Subjects: Life support system -- Mineralization -- Material cycles -- Frequency -- Organic wastes -- Wet oxidation; Space biology -- Periodicals; 571.0919
• DOI: 10.1016/j.lssr.2015.04.005
• Languages: English
• ISSNs: 2214-5524

Abstract

Abstract: The study describes the process of organic waste mineralization in an H2 O2 aqueous medium activated by alternating current, which is intended to enhance the cycling rates in closed life support systems (CLSS) for space missions. The focus of this study is the relationship between the energy consumption and duration of the process and oxidation level of organic wastes on the one hand and the frequency and waveform of the electric current activating H2 O2 decomposition, on the other. Energy consumption and duration of the complete waste mineralization process have been reduced by about 17–18%. A physical model of the process and the applicability of the results for both space and terrestrial purposes have been discussed. Highlights: Optimal current (meander, 35 Hz) of full-scale wet oxidation process was tested. Positive effect on the full-scale process was much less than on the small-scale one. Time and energy consumption in full-scale experiment was decreased by about 17–18%.