scholarly journals Short introspections regarding the sawdust briquetting as sustainable solution for the environment

2014 ◽  
Vol 8 (2) ◽  
pp. 72-79
Author(s):  
Imre Kiss ◽  
Vasile Alexa
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Renewable Resource ◽  
Raw Material ◽  
Production Plant ◽  
Wood Pellets ◽  
Wood Pellet ◽  
Pellet Production ◽  
Power Stations

Wood pellets have only become an important part of this boom in the past few years. Owners of large coal-fired power stations in Europe started searching for a way to fulfill the new regulations and to find a solution for the declining economic relevance of traditional coal-fired power stations due to their high carbon dioxide emissions. The answer was to give the old dirty giants a green coat of paint by “co-firing” regular coal power plants with wood pellets. Wood pellets have similar burning qualities to traditional coal and the costs of converting boilers to burn wood pellets are low. The idea of declaring wood pellets as a carbon neutral energy source was based on the assumption that the released emissions of carbon dioxide during the burning process are neutralized by the carbon that is captured and stored in newly growing trees. The idea of using wood as a renewable source was backed by environment organizations. More recent pellet investment projects as well as facilities currently under construction show that the production of wood pellets is being outsourced by the energy firms to companies specialized in wood pellet production. These firms are 100-percent focused on sourcing the raw material, operating the wood pellet production plant and handling the logistics for transporting the renewable resource.

scholarly journals Heterogeneous catalytic hydrogenation of CO2 to methanol: recent advances and prospects

2020 ◽  
Vol 61 (2) ◽  
pp. 57-67
Author(s):  
Shahla Firiddun Taghiyevа ◽  
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Catalytic Conversion ◽  
Raw Material ◽  
Liquid Fuels ◽  
Industrial Chemicals ◽  
Heterogeneous Catalytic ◽  
Reduce Carbon Dioxide

Carbon dioxide is the main source of the greenhouse effect, causing global warming and climate change. In this regard, in order to avoid more dangerous consequences, the United Nations Conference on Climate Change has emphasized the need to reduce carbon dioxide emissions by at least half their current value by 2050, aiming to limit the global increase in average temperature to a maximum of 2 °C. Carbon dioxide is emitted mainly from power plants (e.g., coal-based) and vehicles, and other industrial sources contribute to an increase in CO2 emissions. In recent years, the scientific community has begun to view CO2 not as a costly waste, but mainly as a potential carbon alternative to fossils. Therefore, future prospects for reducing carbon dioxide emissions will concern not only the development of more efficient carbon dioxide storage technologies, but also the development of new strategies for CO2 processing in the energetical direction and in chemical intermediate products. In this regard, the conversion of CO2 to methanol has received increased attention, since methanol (CH3OH) is a key raw material for industrial chemicals, which can later be converted to high molecular weight alternative liquid fuels. The review considers works published over the past 10 years on the heterogeneous catalytic conversion of CO2 to methanol. The characteristics of the used catalysts, reaction mechanisms, key technologies and problems of industrial use, prospects for the application of heterogeneous catalytic conversion of CO2 to hydrocarbons are discussed.

APPLICATION OF THE CARNOL PROCESS TO PRODUCE METHANOL AND REDUCE CARBON DIOXIDE EMISSIONS

2021 ◽  
Vol 3 (1) ◽  
pp. 104-110
Author(s):  
A. S. SVIRIDOV ◽  
◽  
P. E. NOR ◽  
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
Co2 Emissions ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Raw Materials ◽  
Alternative Fuel ◽  
Raw Material ◽  
Motor Vehicles ◽  
Methanol Production

The Carnol system is the production of methanol from carbon dioxide (obtained from coal-fired power plants) and natural gas, and the use of the resulting methanol as an alternative fuel. The Carnol process produces hydrogen by thermal decomposition of natural gas, which then interacts with the CO2 extracted from the flue emissions of power plants. The resulting carbon can be stored or used as a raw material. The paper provides an estimated characteristic of the reduction of CO2 emissions of the Carnol process and system, and compares it with other traditional methanol production processes, including the use of biomass of industrial raw materials and vehicles powered by methanol fuel cells. CO2 emissions from a Carnol system that uses methanol as an alternative fuel can be reduced by 56 % compared to a conventional coal-fired power plant system. In the case of the use of methanol as fuel for motor vehicles, carbon dioxide emissions.

scholarly journals The Wood Pellet Sector: Barriers to Growth and Opinions of Manufacturers in Poland

2019 ◽  
Vol 19(34) (4) ◽  
pp. 9-18
Author(s):  
Anna Klepacka ◽  
Wojciech Florkowski
Keyword(s):  
Renewable Energy ◽  
Complex Interaction ◽  
Raw Material ◽  
Market Forces ◽  
Pellet Quality ◽  
Wood Pellets ◽  
Wood Pellet ◽  
Pellet Production ◽  
Barriers To Growth ◽  
The Eu

Biomass is a major source of renewable energy in the EU and Poland, stimulating the growth of the wood pellet sector. Wood pellet demand is stimulated by a complex interaction of market forces and policies including EU climate, energy, and environmental regulations, Poland’s program to improve air quality, and subsidies for the replacement of inefficient stoves used by households. This article focuses on the growth of the wood pellet industry, imports and exports in Poland, and wood pellet quality and use by households. The main issues faced by the EU wood pellet sector between 2013 and 2016 are further considered in the context of opinions of Polish wood pellet manufacturers. Industry opinions were collected in response to an open-ended question that probed for the main issues faced by wood pellet producers during the survey implemented by the authors in 2019. Respondents identified difficulties in obtaining raw material for pellet production and poor pellet quality as major problems. Although the majority did not feel concerned about competition from imported wood pellets, a small number of respondents viewed such competition as a problem reflecting the reversal of decreasing imports in 2017. Overall, the domestic wood pellet industry can be expected to grow because of increasing pressure to expand the use of renewable energy and will be driven by the household sector switching to more efficient, wood burning stoves. Additionally, the expanding area of private Polish forests may become a source of much-needed raw material for wood pellet manufacturing.

Carbon Dioxide Emissions from Geothermal Power Plants

2021 ◽  
Author(s):  
Michael O’Sullivan ◽  
Michael Gravatt ◽  
Joris Popineau ◽  
John O’Sullivan ◽  
Warren Mannington ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Geothermal Power

Techno-Economic Evaluation of Pressurized Oxy-Fuel Combustion Systems

2010 ◽  
Author(s):  
Jongsup Hong ◽  
Ahmed F. Ghoniem ◽  
Randall Field ◽  
Marco Gazzino
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Carbon Dioxide Capture ◽  
Fuel Combustion ◽  
Economic Feasibility ◽  
Operating Conditions ◽  
Air Separation ◽  
Separation Unit ◽  
Coal Price

Oxy-fuel combustion coal-fired power plants can achieve significant reduction in carbon dioxide emissions, but at the cost of lowering their efficiency. Research and development are conducted to reduce the efficiency penalty and to improve their reliability. High-pressure oxy-fuel combustion has been shown to improve the overall performance by recuperating more of the fuel enthalpy into the power cycle. In our previous papers, we demonstrated how pressurized oxy-fuel combustion indeed achieves higher net efficiency than that of conventional atmospheric oxy-fuel power cycles. The system utilizes a cryogenic air separation unit, a carbon dioxide purification/compression unit, and flue gas recirculation system, adding to its cost. In this study, we perform a techno-economic feasibility study of pressurized oxy-fuel combustion power systems. A number of reports and papers have been used to develop reliable models which can predict the costs of power plant components, its operation, and carbon dioxide capture specific systems, etc. We evaluate different metrics including capital investments, cost of electricity, and CO2 avoidance costs. Based on our cost analysis, we show that the pressurized oxy-fuel power system is an effective solution in comparison to other carbon dioxide capture technologies. The higher heat recovery displaces some of the regeneration components of the feedwater system. Moreover, pressurized operating conditions lead to reduction in the size of several other critical components. Sensitivity analysis with respect to important parameters such as coal price and plant capacity is performed. The analysis suggests a guideline to operate pressurized oxy-fuel combustion power plants in a more cost-effective way.

scholarly journals DEPENDENCE OF THE COST OF ELECTRICITY ON THE VOLUME OF GREENHOUSE GAS EMISSIONS

2022 ◽  
Vol 1 (15) ◽  
pp. 71-75
Author(s):  
Dmitriy Kononov
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Energy Security ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Low Carbon ◽  
Electricity Prices ◽  
Low Carbon Development ◽  
The Cost

The strategy of low-carbon development of the economy and energy of Russia provides for the introduction of a fee (tax) for carbon dioxide emissions by power plants. This will seriously affect their prospective structure and lead to an increase in electricity prices. The expected neg-ative consequences for national and energy security are great. But serious and multilateral research is needed to properly assess these strategic threats

scholarly journals The Hungarian Wood-Based Panel Industry and its Impact on the Environment

2016 ◽  
Vol 12 (2) ◽  
pp. 157-172
Author(s):  
Gábor Laborczy ◽  
András Winkler
Keyword(s):  
Carbon Dioxide ◽  
Power Plants ◽  
Negative Impact ◽  
Value Added ◽  
Forest Products ◽  
Air Pollutant ◽  
Raw Material ◽  
Energy Sources ◽  
Forest Products Industry ◽  
Round Wood

Abstract It is well known that worldwide deforestation has a negative impact on the global environment. Forests play an important role in producing oxygen as well as retaining gases that create the greenhouse effect. Forests primarily absorb carbon dioxide, the major air pollutant released by the industrial activities. Energy production is the major source of environmental contamination. In addition to reducing CO2 emissions, another issue this industrial sector must tackle is to decrease the use of fossil fuels by substituting them with renewable, environmentally friendly energy sources. One of the answers to these challenges is the utilization of biomass as energy sources. However, biomass-based fuels include short bolts, split round-wood, pulpwood, bark and by-products of sawmilling, which are the raw materials for the wood-based panel industry as well.Wood utilization of the forest products industry has a major impact on the delayed release of carbon dioxide stored in the wood. All over the world, just as in Hungary, the wood-based panel industry mainly uses low quality wood resources and turns them into value added products. The elongation of the life cycle of low quality wood materials decreases CO2 emissions, thus significantly contributing to environmental protection. Furthermore, it is assumed that raw material demand of the wood-based panel industry could be satisfied by focusing on sustainable forest management and well-planned reforestation. Additionally, special energy-plantations may provide extra wood resources, while waste and other non-usable parts of trees contribute to the effective and economic operation of biomass utilizing power-plants. This paper summarizes the current situation of the Hungarian wood-based panel industry and discusses the effects of the panel manufacturing processes on the environment. Also, it outlines the possible future of this important segment of the forest products industry.

scholarly journals Penanaman Kaliandra Sebagai Kayu Energi dan Hijauan Makanan Ternak Pada Pertanaman Agroforestri Masyarakat Desa Gerbosari, Samigaluh Kulon Progo

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Eko Prasetyo ◽  
Wiyono Wiyono ◽  
Puji Lestari ◽  
Rochmat Hidayat ◽  
Hidayat Nur Oktalina ◽  
...  
Keyword(s):  
Community Service ◽  
Agroforestry System ◽  
Raw Material ◽  
Wood Pellets ◽  
Wood Pellet ◽  
Energy Wood ◽  
Livestock Feed ◽  
The People ◽  
Grazing System ◽  
Grazing Systems

The purposes of community service entitled "Kaliandra Planting as Energy Wood and Forage Livestock Feed on Agroforestry Crops Gerbosari Village Community Samigaluh Kulon Progo" are 1). To provide additional knowledge of Kaliandra (Calliandracallothyrsus) utilisation other than HMT that is as a raw material of energy source and 2). To practice the technique of Kaliandra planting on agroforestry system in Gerbosari Village. The way cattle developed in Dusun Keceme is "cut and carry system" or grazing system. Grazing systems make farmers provide land for HMT planting either in the form of grass or tree leaves. Public dissemination and discussion with the community resulted in an agreement that the program is not only Kaliandra planting, but the utilisation of Kaliandra as an energy wood and wood pellet introduction is needed by Keceme Hamlet community. Methods of implementation of community service are through 4 stages in one unity of scheme. The methods are 1) program dissemination, 2) counselling, 3) practice of using a wood pellet stove and 4) planting. The community service program can provide an initial understanding of the community of Keceme Hamlet about the benefits of Kaliandra as an alternative to renewable energy that is in the form of wood pellets. The technique of agroforestry cultivation of Kaliandra has long been practised by the people of Keceme Hamlet that is on the edge of the terrace of the land.

scholarly journals The Development of Electromobility in Poland and EU States as a Tool for Management of CO2 Emissions

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2942 ◽  
Author(s):  
Karol Tucki ◽  
Olga Orynycz ◽  
Antoni Świć ◽  
Mateusz Mitoraj-Wojtanek
Keyword(s):  
Carbon Dioxide ◽  
European Union ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Primary Energy ◽  
Original Method ◽  
Pollutant Emissions ◽  
The European Union ◽  
Car Market ◽  
The Impact

The article analyzes the dynamics of the development of the electromobility sector in Poland in the context of the European Union and due to the economic situation and development of the electromobility sector in the contexts of Switzerland and Norway. On the basis of obtained data, a forecast was made which foresees the most likely outlook of the electric car market in the coming years. The forecast was made using the creeping trend method, and extended up to 2030. As part of the analysis of the effect of the impact of electromobility, an original method was proposed for calculating the primary energy factor (PEF) primary energy ratio in the European Union and in its individual countries, which illustrates the conversion efficiency of primary energy into electricity and the overall efficiency of the power system. The original method was also verified, referring to the methods proposed by the Fraunhofer-Institut. On the basis of all previous actions and analyses, an assessment was made of the impact of the development of the electromobility sector on air quality in the countries studied. Carbon dioxide tank-to-wheels emission reductions which result from the conversion of the car fleet from conventional vehicles to electric motors were then calculated. In addition to reducing carbon dioxide emissions, other pollutant emissions were also calculated, such as carbon monoxide (CO), nitrogen oxides (NOx) and particulate matter (PM). The increase in the demand for electricity resulting from the needs of electric vehicles was also estimated. On this basis, and also on the basis of previously calculated primary energy coefficients, the emission reduction values have been adjusted for additional emissions resulting from the generation of electricity in power plants.

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