Obtaining and Using Biogas in Agricultural Production

Author(s):  
Sergey Nikolaevich Devyanin ◽  
Vladimir Anatolyevich Markov ◽  
Andrei Alexandrovich Savastenko

In recent years, an increased interest has been shown in fuels derived from renewable energy resources of animal and vegetable origin, raw materials of which are practically unlimited. The use of biofuels makes it possible not only to replace petroleum motor fuels with alternative ones, but also to improve exhaust gas toxicity indicators (as a rule, there is a marked decrease in emissions of toxic exhaust gas components). This work is devoted to the study of the possibilities of solving these problems in order to adapt diesel to biogas, a theoretical study of ways to create an experimental model of a power plant for generating electricity from biogas, a theoretical study on the processes occurring in the main components of the plant being developed and the creation of this plant.

Author(s):  
Evgeniy Tkachenko ◽  
Sergey Ugolnikov

Biogas – one of the promising areas of generation and use of renewable energy resources. In manycountries, farmers are considered as promising sites for the production and use of biogas. Due to the largevariations in the quantity and quality of raw materials, modalities and goals of the design of biogas plantsare not formalized and is based on practical experience of the developers. It is shown that the criticalparameters in the design of biogas digesters are a source of raw materials, the amount of energy consumedby household and accommodation. Considered criteria (power, size, equipment, modes of operation, safety,etc.), which have a decisive influence on the structure and functional composition of BSU for farms. Variantsof technological schemes of individual bioreactors, as well as the characteristics of farms that should beconsidered when designing the BSU. Rationally designed BSU improves energy efficiency andenvironmentally friendly agricultural production.


2022 ◽  
Vol 3 (1) ◽  
pp. 047-053
Author(s):  
Rachmat Hermawan ◽  
Rini Riastuti

Indonesia signed the Paris Agreement on facing climate change. Carbon dioxide is the main issue contributing to the greenhouse effect. Most power plant in Indonesia uses non-renewable energy to generate electricity. Increasing demand for electricity makes increasing coal consumption for steam power plants and directly contributes to greenhouse gasses from coal combustion and produces fly ash as a waste product. Otherwise, fly ash from Steam Power Plant is classified as pozzolanic materials being a part of substitution ordinary portland cement (OPC) on making reinforcement concrete. Many Researchers studied reinforcement concrete from fly ash composition and others development using renewable energy resources such as biomass. This paper presents a literature review on focus studying the properties of various types of fly ash and their effect on the performance of concrete, including corrosion resistance.


Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 842
Author(s):  
Pilar Salagre ◽  
Yolanda Cesteros

The concept of circular economy is based on several principles, such as the use of renewable energy resources, including those obtained from the sun, wind, or water; the use of natural raw materials; the manufacturing of products avoiding the generation of wastes and pollution; keeping products and materials in use for a longer time; or giving new applications to waste [...]


2021 ◽  
Vol 11 (20) ◽  
pp. 9717
Author(s):  
Huy Nguyen Duc ◽  
Nhung Nguyen Hong

With the increasing share of variable and limitedly predictable renewable energy in power systems worldwide, ensuring reserve capacity to maintain the balance of supply and demand becomes more important. On the other hand, the development of the virtual power plant model (VPP) allows renewable sources and energy storage to participate in reserve service. This paper addresses the optimal reserve bidding strategy problem of a VPP comprising of renewable energy resources (RESs), energy storage systems (ESSs), and several customers. The VPP participates in balance capacity (BC), day-ahead (DA), and intra-day (ID) markets. The scheduling problem is formulated as a two-stage chance-constrained optimization model taking the uncertainty of RESs production, load consumption, and probability of reserve activation into account. The response of VPP after its reserve capacity is called and generated is also considered to increase the operational flexibility of VPP. The proposed model is implemented on a test VPP system, and the effects of RESs sizing, ESSs sizing, and the probability of reserve activation are analyzed. Results indicate that the proposed model can perform well under real-world conditions.


2010 ◽  
Vol 4 (3-4) ◽  
pp. 75-78
Author(s):  
Veronika Erős ◽  
Tamás Biró

In the 21st century a country’s success significantly depends on how it can solve the problems (supply safety, growing prices, climate change, etc.) induced by the application structure of the fossil energy sources with the means of energy saving, energy efficiency and the utilization of renewable energy resources. The utilization of renewable energy sources has positive effects on five key areas: environment protection, energy policies, fulfilment of EU expectations, agriculture and rural development and on the whole of the national economy. The bioenergy – beside fulfilling the national economic aims – it is putting up the value of the role of agriculture and rural development. The role of agriculture is multi-functional in the process. The agricultural sector has an important task in the area of bioenergy to ensure the proper quality and quantity of raw materials for the increase of bioenergy utilization. This also means new sales perspectives and opportunities for the producers. Above all this, the agricultural policy aims for the agriculture and the rural development segment to be the unambiguous winner of the new bioenergy sector and for most of the available profit to stay with the agricultural sector, with the rural players. For this reason encouraging the raw material production it wishes to encourage the producer their primary process and their local utilization. One of the fundamental objectives of the measures is that agriculture should go beyond the raw material production and take steps towards processing and utilization. The multifunctional role in the product chain might mean extra income and more added value for the producers and the active players in the process. The other objective is to promote the local utilization, the scatter of the environmentally friendly energy sources in rural areas, to change the energy is “lying on the ground unutilized” principle while local processing and promoting the utilization, to achieve a lower energy dependency and to optimize and disseminate cost efficient solutions. To realize all this means a great task and a huge challenge for the agricultural government as well as the rural societies and micro regions but might lead to a successful rural development. The range of the tools and measures to fulfil the aims might be very broad, from the regulating instruments to the various subsidies, coordination and dissemination tools. Part of the subsidy schemes are direct production-type of subsidies (the so called direct payments, for example the area based subsidies) and the other main forms are the investment-type subsidies which are for technology development, promotion of competitive production and local processing and for establishing a green energy industry. In the period of 2007-2013 the key elements of the development schemes were drafted in the frame of the New Hungary Rural Development Programme (ÚMVP) and the Environmental Energy Operational Program (KEOP). The available raw materials and the conditions are taken into consideration while designing the development schemes because a successful realization of a product chain means the assurance of the inputs and outputs. The starting point of determining the development direction is the principle of an operation which is sustainable and economical on the long run. In addition such developments are considered reasonable which are viable on medium and long term and bring numerous rural development, environmental and societal returns.


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