scholarly journals Energy rationale for the Use of the Thermophilic Mode of Anaerobic Bioconversion of Liquid Organic Waste in the Climatic Conditions of the Russian Federation

2022 ◽  
Author(s):  
Andrey A. Kovalev ◽  
Dmitriy A. Kovalev ◽  
Yuri V. Litti ◽  
Inna V. Katraeva ◽  
Alla N. Nozhevnikova

The transition of livestock production to industrial processes and the concentration of animals associated with this process on large farms and complexes has caused a sharp increase in the volume of manure that must be disposed of without pollution. One of the ways of processing organic waste (biomass) is its anaerobic digestion in biogas plants through the vital activity of microorganisms (methanogenesis).Biogas obtained using microbiological processing of biomass can be used as a raw material for heat and electric energy. Annually, 0.17% of the total livestock manure produced at Russian agricultural enterprisesis used for biogas production.The main component of a biogas plant is a manure fermentation reactor, the required volume of which is determined by the daily output of manure from the livestock farm, the temperature and the hydraulic retention time of treatment. This research explored thermal energy consumption of biogas plants, using the example of a biogas plant of a modular design that depended on the average annual outdoor temperature. Based on the calculations, the thermophilic mode was found to be more energy-efficient than the mesophilic one; thus, with the thermophilic mode, the specific energy consumption needed for the plant was lower at the average annual outdoor temperatures of all the constituent entities of the Russian Federation. At the same time, the specific biogas yield in the thermophilic regime was 20-50%higher than in the mesophilic regime. Keywords: anaerobic processing, agricultural waste, thermophilicmode, mesophilicmode, energy costs, energy rationale

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2424
Author(s):  
Jan Martin Zepter ◽  
Jan Engelhardt ◽  
Tatiana Gabderakhmanova ◽  
Mattia Marinelli

Biogas plants may support the transformation towards renewable-based and integrated energy systems by providing dispatchable co-generation as well as opportunities for biogas upgrading or power-to-X conversion. In this paper, a simulation model that comprises the main dynamics of the internal processes of a biogas plant is developed. Based on first-order kinetics of the anaerobic digestion process, the biogas production of an input feeding schedule of raw material can be estimated. The output of the plant in terms of electrical and thermal energy is validated against empirical data from a 3-MW biogas plant on the Danish island of Bornholm. The results show that the model provides an accurate representation of the processes within a biogas plant. The paper further provides insights on the functioning of the biogas plant on Bornholm as well as discusses upgrading potentials of biogas to biomethane at the plant from an energy perspective.


Author(s):  
А.О. ЕВСЮКОВА

Согласно данным проекта Стратегии развития физической культуры и спорта в Российской Федерации до 2030 года, в 2008–2019 гг. численность систематически занимающегося физической культурой и спортом населения выросла в 2,5 раза. Это обусловливает необходимость создания инновационных продуктов для людей занимающихся спортом. Для определения перспектив создания продуктов специального назначения, в частности функциональных напитков для спортивного питания, проведен анализ патентов в этой области. Объектом анализа были 59 патентов, опубликованных с 1995 г. по май 2020 г. и занесенных в отечественную – ФИПС и международные – EAPATIS, USPTO, EPO, CISPATANT базы данных. Проанализированы следующие подклассы изобретений по актуализированной версии МПК: A23C, A23D, A23F, A23G, A23J, A23K, A23L, A61K, A61P, C12G. Результаты исследований представлены на рисунках в виде диаграмм. Установлено, что производство функциональных напитков для спортивного питания активно развивается. Российская Федерация имеет преимущество по количеству зарегистрированных патентов в этой области, но по объему производства продукции уступает зарубежным странам. Поскольку продукция агропромышленного комплекса России вполне удовлетворяет требованиям потребителей к натуральности сырьевого состава продукта, для обеспечения стабильности внутреннего рынка перспективно развитие отечественного производства функциональных напитков для спортивного питания. According to the draft strategy for the development of physical culture and sports in the Russian Federation until 2030, in 2008–2019, the number of people systematically engaged in physical culture and sports increased by 2,5 times. This makes it necessary to create innovative products for people involved in sports. To determine the prospects for creating special-purpose products, in particular functional beverages for sports nutrition, an analysis of patents in this area was conducted. 59 patents published from 1995 to may 2020 and included in the national – FIPS and international – EAPATIS, USPTO, EPO, CISPATANT databases were the object of analysis. Subclasses of inventions according to the updated version of the IPC A23C, A23D, A23F, A23G, A23J, A23K, A23L, A61K, A61P and C12G are analyzed. The results of the research are presented in figures in the form of diagrams. It is established that the production of functional beverages for sports nutrition is actively developing. The Russian Federation has an advantage in the number of registered patents in this area, but in terms of production volume it is inferior to foreign countries. Since the products of the Russian agro-industrial complex fully meet the requirements of consumers for the naturalness of the raw material composition of the product, the development of domestic production of functional beverages for sports nutrition is promising to ensure the stability of the domestic market.


2020 ◽  
Author(s):  
P.A. Kozlov ◽  
A.M. Panshin ◽  
L.I. Leontiev

The increasing demand for zinc and a range of zinc-related metals (for example: lead; indium; tin; cadmium; and copper) in the Russian Federation cannot be satisfied by the existing production plants due to the lack of raw materials. At the same time, ferrous and non-ferrous metallurgy and the chemical industry have accumulated hundreds of millions of tons of zinc wastes (falling into the hazard categories 2 to 4), the processing of which could not only make up the raw material base, but also improve the environmental situation. In the world, over 85% of ferrous dust is recycled using the Waelz process. The Waeltz process is used for distilling separation of elements under reducing conditions. In this study, a block diagram for production of the following elements from industrial wastes is proposed: zinc, cadmium and indium in form of massive metals; zinc and indium in the form of fine powders; and clinker as a raw material for cement production. The technical and scientific details of this new process have been patented in the Russian Federation and abroad. For the first time, the following operations have been implemented with the use of large-sized Waelz kilns: vapour-oxidized Waeltz treatment of polymetallic wastes; recycling of heat from gases and solid products with generation of process fumes; and implementation of alternative flux (dolomite) and alternative fuel (petroleum coke). Keywords: Waelz process, industrial wastes, heat recycling, vapour-oxidized Waelz processing


Refractories ◽  
1993 ◽  
Vol 34 (5-6) ◽  
pp. 272-275
Author(s):  
G. M. Katorgin ◽  
V. M. Dzyuba ◽  
A. A. Shagin ◽  
S. M. Selektor

2021 ◽  
Vol 6 (1(24)) ◽  
pp. 30-37
Author(s):  
Fyodor Vasilyev

The author’s article addresses very well-stated economic security, allowing us to draw not only scientific, educational and educational conclusions, but also practical requirements in view of the current developments in the country in the development of the market system. What really outlined the position of the author allows us to assert the presence of views on the part of citizens of the Russian Federation, who have citizenship of the United States, England, Cyprus, Germany, etc. countries to consider Russian resources as a source of enrichment (raw material base) and the ability to pay them increased taxes in those countries where they have not only citizenship of the CIVIL, but also accounts, real estate. In general, the author’s judgment will allow to implement not only the requirements (concepts and strategies) of the President of Russia, but also in improving the activities of the legislation and activities of certain state bodies of the Russian Federation.


2021 ◽  
Author(s):  
S.K. Mustafin ◽  
◽  
A.V. Rasskazov ◽  
◽  

The state and prospects of development of phosphorite ore resources as agrochemical raw materials of the Russian Federation are analyzed. The geological structure, composition of ores and the prospects for forecasting, assessing and integrated development of phosphorite deposits of the South Ural phosphorite basin are characterized.


2021 ◽  
Vol 10 (4) ◽  
pp. 138-146
Author(s):  
V. A. Sagaradze ◽  
E. Yu. Babaeva ◽  
E. I. Kalenikova ◽  
N. A. Trusov ◽  
E. V. Peshchanskaya

Introduction. The Crataegus L. (Hawthorn) is a common herb in numerous Pharmacopoeias. The State Pharmacopoeia of the Russian Federation provides hawthorn fruits and flowers for medical utilization. With that, the literature data confirms the medical utility of hawthorn leaves since the “leaves” and the “flowers with leaves” have pharmacopoeial status worldwide. Therefore, those are considered as prospective forms of Crataegus raw material for Russian pharmaceutical production. However, most species remain poorly pharmacognostically investigated regarding the quantitative microscopic characteristics (the sizes of stomatal apparatus (SA) and epidermal leaf blade (LB) trichomes), which could be substantial for establishing the authenticity of the raw material.Aim. Examine epidermal anatomy of Crataegus spp. Leaf blades (LBs) and perform a comparative study of several quantitative diagnostic features of LBs of hawthorn plants from the sect. Sanguineae and the sect. Crataegus, growing in diverse regions of the Russian Federation.Materials and methods. Samples of hawthorn leaves (C. sanguinea, C. maximowiczii, C. dahurica, C. rhipidophylla, C. monogyna and C. pallasii) were collected in natural habitats in Western Siberia (Kemerovo) and in arboretums of Botanical Gardens (Moscow, Stavropol). Measurements of anatomical structures were carried out using a light microscope accompanied by an ocular micrometre.Results and discussion. The LB surface phenotypic diversity within hawthorn species and sections was studied. The LBs were described in terms of meterages (longitude and width) of SA, meterages and shape of sedentary multicellular leaf teeth glands. The peculiarities of pubescence and the sizes of simple unicellular non-glandular trichomes were also observed.Conclusion. The results of quantitative anatomical examination provided the characteristic features determining these elements at the species and section levels. Thus, it may facilitate authentication and quality control of whole or ground Crataegus medicinal raw material.


2020 ◽  
Vol 1 (3) ◽  
pp. 17-26
Author(s):  
Lucian Paunescu ◽  
Sorin Mircea Axinte ◽  
Marius Florin Dragoescu ◽  
Felicia Cosmulescu

Abstract                                                         The aim of the paper was the experimental manufacture of cellular glass from glass waste and coal ash as raw material and silicon carbide as a foaming agent, using the unconventional microwave heating technique. This heating technique, although known since the last century and recognized worldwide as fast and economical, is not yet industrially applied in high temperature thermal processes. The cellular glass manufacturing process requires high temperatures and the use of microwaves in this process is the originality of the work. The experiments aimed at producing thermal insulating materials with high porosity and low thermal conductivity for building construction similar in terms of quality to those manufactured industrially by conventional techniques, but with lower energy consumption. The obtained samples had adequate characteristics (apparent density 0.22-0.32 g/cm3, porosity 85.5-90.0%, thermal conductivity 0.043-0.060 W/m·K, compressive strength 1.23-1.34 MPa), and the specific energy consumption was low (0.84-0.89 kWh/kg). Theoretically, given the use of microwave equipment on an industrial scale, this consumption comparable in value to that industrially achieved by conventional techniques could decrease by up to 25%.


Sign in / Sign up

Export Citation Format

Share Document