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Title: INFLUENCE OF IMMOBILIZATION SUPPORT MATERIAL TYPE ON THE ANAEROBIC DIGESTION
INFLUENCE OF IMMOBILIZATION SUPPORT MATERIAL TYPE ON THE ANAEROBIC DIGESTION

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Elza Mikheeva; Inna Katraeva; Andrey Kovalev; Yuri Litti
10.5593/sgem2022/4.1/s17.13
10.5593/sgem2022/4.1
1314-2704
978-619-7603-44-6
English
22
4.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Renewable Energy Sources and Clean Technologies
The process of anaerobic fermentation of organic waste makes it possible to produce not only methane, but also hydrogen, which, when mixed, form a high-energy mixture - biohythane. The efficiency of biohythane production in a two-stage anaerobic fermentation process depends on many factors, including organic loading rate (OLR) and hydraulic retention time (HRT). It is known that the addition of an immobilizing support materials to anaerobic bioreactors improves the stability of their operation and increases the biogas yield. An important aspect is the nature of the immobilizing support material, which can perform not only the immobilization function, but also have a stimulating effect on the anaerobic digestion. Therefore, the selection of an appropriate immobilizing support material for a fixed bed bioreactor can ensure high efficiency and successful operation of the fermentation system. The aim of the work was to select the most effective immobilizing support material for a fixed-bed methanogenic reactor in a two-stage anaerobic digestion of cheese whey to produce biohythane. Polyurethane bed material, carbon felt, Raschig ring-type ceramic bed material, as well as a mixture of carbon felt and ceramic bed material were used in the work. The highest methane production rates (MPR) were obtained for the reactor with carbon bed material as an immobilizing support materials (753.9 ml/(L d)) and for the reactor with a mixture of ceramic bed material and carbon felt (763.5 ml/(L d )). The highest concentration of methane in biogas (68.8%) was recorded in the methanogenic reactor with coal felt. The average concentration of hydrogen in the biogas of the acidogenic reactor when using polyurethane bed material was 41.04%.
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The study was supported by the Russian Science Foundation grant No. 21-79-10153, https://rscf.ru/project/21-79-10153/
conference
https://doi.org/10.5593/sgem2022/4.1/s17.13
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Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 04 - 10 July, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
97-104
04 - 10 July, 2022
website
8583
biohythane, two-stage anaerobic digestion, immobilization support material (fixed-bed material), upflow anaerobic packed-bed bioreactor