Application of Hydrodynamic Cavitation for Improving Methane Fermentation of Sida hermaphrodita Silage

Marcin Zieliński, Paulina Rusanowska, Aleksandra Krzywik, Magda Dudek, Anna Nowicka and Marcin Dębowski
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Marcin Zieliński: University of Warmia and Mazury in Olsztyn, Department of Environment Engineering, Warszawska 117, 10-720 Olsztyn, Poland
Paulina Rusanowska: University of Warmia and Mazury in Olsztyn, Department of Environment Engineering, Warszawska 117, 10-720 Olsztyn, Poland
Aleksandra Krzywik: Czestochowa University of Technology, J.H. Dąbrowskiego 69, 42-201 Częstochowa, Poland
Magda Dudek: University of Warmia and Mazury in Olsztyn, Department of Environment Engineering, Warszawska 117, 10-720 Olsztyn, Poland
Anna Nowicka: University of Warmia and Mazury in Olsztyn, Department of Environment Engineering, Warszawska 117, 10-720 Olsztyn, Poland
Marcin Dębowski: University of Warmia and Mazury in Olsztyn, Department of Environment Engineering, Warszawska 117, 10-720 Olsztyn, Poland

Energies, 2019, vol. 12, issue 3, 1-8

Abstract: Hydrodynamic cavitation was recently applied as a biomass pretreatment method. Most of the studies which used hydrodynamic cavitation were applied to pretreated sugarcane bagasse or reed. High biomass yield of Sida hermaphrodita points out the necessity of studies on its effective pretreatment before methane fermentation, especially because its “wood-like” characteristics could present different disintegration properties than other lignocellulose biomass. Thus, the aim of the study was to investigate the influence of duration of hydrodynamic cavitation on lignocellulose composition in Sida hermaphrodita silage, and the assessment of disintegrated biomass as a substrate for methane fermentation. The study showed a slight decrease in lignin, cellulose, and hemicellulose content in biomass after hydrodynamic cavitation, which resulted in a higher content of carbohydrates in the liquid fraction of disintegrated substrates. Methane production was 439.1 ± 45.0 L CH 4 /kg total solids (TS) from the substrate disintegrated for 20 min. However, the most effective time for methane production was hydrodynamic cavitation of the substrate for 5 min. At this pretreatment duration, the highest values for chemical oxygen demand (COD), total organic carbon (TOC), and carbohydrate reduction were also noted. The study proved that hydrodynamic cavitation applied for 5 min allowed obtaining an energy profit of 0.17 Wh/g TS. The studies on a laboratory scale indicated that the technology of hydrodynamic cavitation of Sida hermaphrodita could be economically applied for methane fermentation on a large scale.

Keywords: Virginia mallow; Virginia fanpetals; hydrodynamic cavitation; biogas production (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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