Increasing the efficiency of organic waste conversion into biogas by mechanical pretreatment in an electromagnetic mill

Litti, Yu. V.; Kovalev, Dmitry; Kovalev, Andrey A.; Katraeva, Inna V.; Russkova, Yulia; Ножевникова, А. Н.

doi:10.1088/1742-6596/1111/1/012013

Cited by 20 publications

(7 citation statements)

References 7 publications

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“…В силу указанных причин ведущие специалисты по анаэробной переработке органических отходов выделили сопряжение аэробного и анаэробного процессов как отдельное направление развития [28]. концентрации на единицу объема обрабатываемого вещества 4 .…”

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Energy Efficiency of Pretreatment of Digester Synthetic Substrate in a Vortex Layer Apparatus

Kovalev

Grigoriev

2020

Engineering Technologies and Systems

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Introduction. Processing organic waste to reduce the anthropogenic impact on the environment remains an urgent task, one of the ways to solve which is the use of methods for bioconversion of organic matter of organic waste to produce gaseous energy carrier and high-quality organic fertilizers. One of the most important stages of anaerobic processing of organic waste in bioreactors is the stage of preliminary preparation of waste for fermentation, which can be carried out by a number of methods. However, the technical literature does not pay enough attention to the use of devices with a vortex layer for the preliminary processing of substrates. The aim of the work is to determine the energy efficiency of the organic waste pretreatment process in the vortex layer apparatus before anaerobic digestion. Materials and Methods. An experimental installation was developed to study the process of organic waste pretreatment. A mixture of organic fraction of municipal solid waste and tap water in the ratio of 300 g/l served as a substrate for treatment in the vortex layer apparatus. Results. The calculations confirmed that the condition for energy efficiency of processing substrate pretreatment of methane is met, despite the additional cost of electrical energy during the integration of this stage in the system of anaerobic processing. Discussion and Conclusion. Integration of the process of organic waste pretreatment in the vortex layer apparatus before fermentation in anaerobic bioreactors into the system of anaerobic treatment of organic waste can improve both the energy efficiency of the system and the level of anaerobic decomposition of organic matter of waste. The specific amount of biogas energy produced in the digestion process in an anaerobic bioreactor with pretreatment of the substrate in the apparatus of the vortex layer fully compensates the energy cost of pre-treatment of the substrate in the vortex layer apparatus. The practical significance of the work is confirmed by an increase in the specific yield of commercial energy by 70% compared to anaerobic treatment in traditional methane tanks.

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Section: Fundingunclassified

Energy Efficiency of Pretreatment of Digester Synthetic Substrate in a Vortex Layer Apparatus

Kovalev

Grigoriev

2020

Engineering Technologies and Systems

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“…So far, EMMs have only been utilized in shredding of the raw material and ultra-fine comminution. 69,[72][73][74][75] Considering the issue of low reaction efficiency due to aggregation in the solid state, we design and develop new EMM equipment for solid-state coupling reactions, which might potentially solve this problem. Herein, we report the first EMM promoted solid-state SMC reaction using ultra-low catalyst loading without liquid molecular dispersants (Fig.…”

Section: Introductionmentioning

confidence: 99%

A novel electromagnetic mill promoted mechanochemical solid-state Suzuki–Miyaura cross-coupling reaction using ultra-low catalyst loading

Zhang

Dong

et al. 2022

Green Chem.

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“…To speed up the process of anaerobic treatment of organic waste and increase the biogas yield, various methods of pretreatment (physical, chemical, physicochemical and biological) are used [1][2][3][4]. One of the most promising and energy-efficient methods is the use of vortex layer apparatus (VLA), in which a complex impact on the substrate takes place due to chaotically moving ferromagnetic bodies in a rotating magnetic field [5][6]. As a high-performance shredder, VLA has found applications in mineral processing, chemical, construction, food, cosmetic, and pharmaceutical industries [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…In the process of treatment in VLA, the sample is heated, which, on the one hand, contributes to its disinfection, and on the other hand, it allows heating it to the required temperature before feeding into the anaerobic reactor, eliminating the temperature shock of the anaerobic microbial community and contributing to its stable operation [5]. Previously, the authors showed a positive impact of pretreatment of various organic substrates in VLA on the process of anaerobic digestion, in particular, on the kinetics of methanogenesis, the degree of decomposition of organic matter, methane content in biogas, and waste decontamination [5,6].…”

Section: Introductionmentioning

confidence: 99%

Influence of confectionery wastewater pretreatment in vortex layer apparatus on its physical and chemical properties

et al. 2022

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The paper studies the effect of pretreatment of highly concentrated wastewater from confectionery production in a vortex layer apparatus (VLA) on its physical and chemical properties, with the aim of its further use as a substrate for dark fermentation with the production of biohydrogen. Pretreatment in VLA resulted in a 2.6-fold increase in the iron content and 6.5% increase in soluble chemical oxygen demand after 3 minutes of exposure. After pretreatment in VLA, an increase in the content of acetic acid and a decrease in the contents of propionic, butyric and caproic acids were observed. An increase in the content of mono- and disaccharides was registered, and the effect of the VLA exposure time of confectionery wastewater on its physicochemical properties was studied. An increase in the concentration of iron and simple sugars in wastewater makes the use of VLA promising for improving the process of its subsequent dark fermentation.

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Increasing the efficiency of organic waste conversion into biogas by mechanical pretreatment in an electromagnetic mill

Cited by 20 publications

References 7 publications

Energy Efficiency of Pretreatment of Digester Synthetic Substrate in a Vortex Layer Apparatus

Energy Efficiency of Pretreatment of Digester Synthetic Substrate in a Vortex Layer Apparatus

A novel electromagnetic mill promoted mechanochemical solid-state Suzuki–Miyaura cross-coupling reaction using ultra-low catalyst loading

Influence of confectionery wastewater pretreatment in vortex layer apparatus on its physical and chemical properties

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