Претрага

Упит dcterms_subject_txt:Stratigraphy,Economic Geology,Geology,Fuel Technology

956 items

  • Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)

    M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)
    Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...
    Stratigraphy,Economic Geology,Geology,Fuel Technology

  • Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia

    Nikola Burazer, Aleksandra Šajnović, Nebojša Vasić, Milica Kašanin-Grubin, Dragana Životić, João Graciano Mendonça Filho, Predrag Vulić, Branimir Jovančićević (2020)
    Stratigraphy,Economic Geology,Geology,Geophysics,Oceanography

  • Available technological procedures for capturing CO2 in the industrial and power generation sectors

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac (2021)
    Climate change is a major environmental issue caused by anthropogenic emissions of greenhouse gases. Capturing CO2 and storing it in suitable geological formations is one of the main technological solutions that can provide mitigation of CO2 emission into the atmosphere. Capturing CO2 represents the first phase in process of carbon capture and storage, and includes the application of various technologies for the separation of CO2 produced in the energy and industrial sectors. There are four main systems for capturing ...
    capturing CO2, power plants, CO2 capture systems, CO2 technologies
    ... adsorbents while hydrogen rich fuel is combusted to produce energy [15]. The emission of CO2 by this technology can be reduced up to about 90-95 % [8]. Pre-combustion systems are more suitable for application in the new-build plants than in existing ones, because of the fuel conversion complexity [16-17] ...
    ... Concentration of CO2 in oxy-fuel combustion is 80-98% depending on used fossil fuel, but the major drawback is very high capital cost and the energy penalty for the reason that large amount of energy is needed for separating oxygen from the air. Conventional technology procedures that could be employed ...
    ... operate [29]. Membrane technology has great potential for capturing CO2 from different gas streams such as: CO2/H2 separation in pre-combustion systems, CO2/N2 separation in post-combustion, capturing CO2 in natural gas processing and oxygen separation from nitrogen in an oxy-fuel combustion system [21] ...

  • Effects of Energy Production and Consumption on Air Pollution in Serbia

    Marija Živković (2019)
    Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87.88% of energy consumed in Serbia is related to fossil fuels, while almost 95% of energy sources are combusted. In 2017. energy related carbon dioxide emission in Serbia is was 47.95 million tones. The main source of carbon dioxide emission was coal, responsible for almost 70% of energy ...
    energy related emissions, Serbia
    ... pollution, both in terms of emissions per unit of fuel consumed and in terms of their share of total emissions (Figure 6). Figure 6.Global average emission factors 4 Emission factors can vary widely for each fuel among end-use sectors, depending on the technology implemented. For example: a gasoline car with ...
    ... of Mining and Geology, Serbia, marija.zivkovic@rgf.bg.ac.rs Abstract: Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87 ...
    ... combination fuel and activity, emission of carbon monoxide in Serbia from the buildings and transport sectors in 2017. is estimated to 560.3 thousand tones with a structure by fuel given in figure 7. a) b) Figure 7. Carbon monoxide emission a) by fuel and ...

  • Natural radioactivity of groundwater in Serbia

    Marina Ćuk, Petar Papić, Jana Stojković (2014)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology

  • Depth geological relations of the wider area of Belgrade - based on the wells and geophysical data

    Đorđe Marinović, Ljupko Rundić (2020)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology

  • Rare earth elements in some bottled waters of Serbia

    Maja Todorović, Petar Papić, Marina Ćuk, Jana Stojković (2014)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology

  • Application of factor analysis in identification of dominant hydrogeochemical processes of some nitrogenous groundwater of Serbia

    Jana Stojković, Petar Papić, Marina Ćuk, Maja Todorović (2014)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology

  • Preparation, synthesis and characterization of nanometric Ca0.9Er0.1MnO3

    Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)
    ... procedure (SNP) technique. The following substances were used to obtain this complex perovskite: sucrose CoH>»O,,, Which has a dual role (complexant and fuel), and metal nitrates were used as oxidants - calcium nitrate tetrahydrate Ca(NOs),x*4H,O, manganese(II) nitrate hydrate Mn(NOyx)xH,O, erbium(III) ...
    ... nal Conference for Young Scientists in Ceramics. FEditors-in-Chief Prof. Dr. Vladimir V. Srdić Dr. SoBa Hžibalova Publisher Faculty of Technology, University of Novi Sad Bul. cara Lazara 1, 21000 Novi Sad, Serbia For Publisher Prof. Dr. Biljana Pajin Printing layout Vladimir V. Srdić ...
    ... for Young Scientists in Ceramics, October 11-14, 2023, Novi Sad ; [editor-in-chief Vladimir V. Srdić, SoBa Htibalov4]|. - Novi Sad : Faculty of Technology, 2023 (Aranđelovac : Tri 0). - XV, 137 str. : ialustr. ; 24 cm Tiraž 130. - Str. III: Preface / editors. - Registar. ISBN 978-86-6253-174-2 ...

  • Investigation of nanostructured Ca0.9Er0.1MnO3 obtained by sucrose nitrate procedure

    Tijana B. Vlašković, Bojana Laban, Maja Milošević, Maria Čebela, Vladimir Dodevski, Milena Rosić (2023)
    ... Serbian Ceramic Society Institute of Technical Sciences of SASA Institute for Testing of Materials Institute of Chemistry Technology and Metallurgy Institute for Technology of Nuclear and Other Raw Mineral Materials PROGRAM AND THE BOOK OF ABSTRACTS Serbian Academy of Sciences and Arts, Knez ...
    ... Serbian Ceramic Society Institute of Technical Sciences of SASA Institute for Testing of Materials Institute of Chemistry Technology and Metallurgy Institute for Technology of Nuclear and Other Raw Mineral Materials PROGRAM AND THE BOOK OF ABSTRACTS Serbian Academy of Sciences and Arts, Knez ...
    ... MnOa oxide with a perovskite structure was synthesized by the sucrose nitrate procedure (SNP), with the help of sucrose, which plays the role of fuel and complexant. Other chemicals used are calcium nitrate tetrahydrate Ca(NOxy))x4H.O, manganese nitrate hydrate Mn(NOx)>xH»O, erbium nitrate pe ...

  • Late Triassic radiolarians from the Grivska formation, internal Dinarides, SW Serbia

    Nikita Bragin, Liubov Bragina, Nevenka Đerić, Nataša Gerzina-Spajić (2019)
    Paleontology, Stratigraphy, Economic Geology, Geochemistry and Petrology, Geology, Geophysics, Geotechnical Engineering and Engineering Geology
    ... North America. Bulletins of American Paleontology, 85: 1–88. BRAGIN, N. Y. 2000. Triassic radiolarian zonation in the Far East of Russia. Stratigraphy and Geological Correlation, 8:579-592. BRAGIN, N. Y. 2007. Late Triassic radiolarians of southern Cyprus. Paleontological Journal, 41: 951–1029 ...
    ... приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac ...
    ... Institute of Russian Academy of Sciences, Pyzhevsky 7, Moscow 119017, Russia. E-mail: bragin.neomail.ru ?žUniversity of Belgrade, Faculty of Mining and Geology, Serbia. NIKITA YU. BRAGIN, LIUBOV G. BRAGINA, NEVENKA DJERIĆ & !NATAŠA GERZINA SPAJIĆ Introduction The Triassic hemipelagic deposits of moderate ...

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... liquid fuels and chemical raw materials. The competitiveness of these products is changing with the cost of technology, or the level of development of this technology. Today's economic, energy and environmental effects have highlighted outstanding, interests for the future of clean and renewable ...
    ... support through the Project of Technology Development TR33003. References 1} Kempka, T., ef al., Economic Viability of in Situ Coal Gasification with Downtstream CO», Gluck- auf-Mining-Reporter: International Journal for Mining, Tunnelling, Equipment and Technology, Potsdam, Germany, 2009, 1, ...
    ... as a fuel in thermal power plants (TPP), as well as district heating plants, in chemical industry, in systems for the hydrogen generation, and also for obtaining petroleum products as fuels. In Australia, in the beginning ofthis century, when the prices of oil fuels were high, diesel fuel has been ...

  • Integrative GHG Assessment in Oil and Gas Industry

    Aleksandar Mirković, Marija Živković, Stevan Đenadić, Darja Lubarda, Chinedu Anyanwa (2023)
    Reducing greenhouse gas emissions is one of the main targets of national strategies in European countries. As a main contributor to emissions, the energy sector is recognized as the most promising to apply measures and actions aimed to decrease GHG emissions. The Oil and Gas industry as a significant contributor to global greenhouse gas emissions is facing a growing need for estimating, mitigating, and reducing the impact of their operations on the atmosphere to stay competitive in a newly ...
    energetska tranzicija, gasovi staklene baste, industrija, nafta i gas
    ... amount of fuel combusted and thc average emission factors. Since most of the carbon is emitted as COx> during fuel combustion, and only a small amount is ecmitted as non-CO, gases, the ticr 1 methodology only considers the quantity of fuel combusted and not the combustion technology, maintenance ...
    ... methane (CHx), and nitrogen oxides (NOx). The amount of CO emitted depends on the carbon content of the fuel combusted, while the emissions of non- CO. gases mainly depend on the combustion technology and parameters. The methodological approach for estimating CO> emissions is classified into ticrs ...
    ... FC e · EFGHG,fuel () where: EcgG,uer (EmissionSguG,e) - Emission of a GHG by type of fuel, [kg]; FCer (Fuel Consumptionje) - Amount of heat energy produced in combustion processes, [T]]; EFauacyur (Emission FactorcHcye) — Average emission factor ofa given GHG by type of fuel, [kg/T]]. Tier ...

  • Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines

    Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković (2021)
    The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...
    In Pit Crushing and Conveying, IPCC, open pit mining, haulage, optimization, costs saving

  • Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs

    John Nyame (2024)
    The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...
    Carbon Capture, Utilization and Storage
    ... org/10.1039/C2DT31550E [47] E. J. Granite and T. O'Brien, “Review of novel methods for carbon dioxide separation from flue and fuel gases,” Fuel Processing Technology, vol. 86, no. 14-15, pp. 1423—1434, 2005. [48] Rodriguez, N. et al.: Experimental investigation of a circulating fluidized-bed ...
    ... systems and technology which in turn creates some sources of air and carbon pollution which may in the long run defeat the purpose of capturing carbon in the first place [27]. There are 3 basic approaches prior to CO:> capture thus the pre-combustion, post-combustion and the oxy fuel combustion ...
    ... applications. A post- combustion technology, which directly allows CO2 removal from flue gas streams after combustion. Generally, the CO» in flue gas is diluted (8-15% CO). Oxy fuel combustion employs pure oxygen for combustion instead of ambient air, and this results in a flue gas that is mainly ...

  • The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers

    Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović (2019)
    One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...
    open-cast coal mine, auxiliary works, bulldozers, optimization, availability
    ... with minimal cost (Figure 3). [2] Equivalent Uniform Annual Cost (EUAC) 4 a Optimal Economic Life: Min EUAC , Total Cost i i Operations and Maintenance Cost Capital Cost vW Time of Use Figure 3. The economic life of the machine, based on the minimal cost method (1) Hourly ownership costs and ...
    ... nt of Lignite Open cast Technology in Order to Increase Energy Efficiency and Occupational Safety” (TR 33039), “Developed new methods for diagnosis and examination mechanical structures” (TR 35040) and a part of the project “Research on possibility for AT (Advanced Technology) rockbolting application ...
    ... operation аге having lesser efficiency which is indicated by reduced number of effective hours which these machines can achieve, higher consumption of fuel and spare parts and more stoppages (failures) (Figure 1). 286 3000 | [mh] /_—\_/—\ | 2500 - ИИ иИ 2000 - / es / —о— Аџегаве ...

  • Projection of SO2 emissions in coal power plants in Serbia

    Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac (2023)
    The production of electricity in the countries of South-Eastern Europe (SEE) was mainly related to the use of coal, predominantly lignite. The total installed capacity of thermal power plants using coal in these seven countries is 17.813 MW, distributed in 31 thermoblocks. The mentioned plants are the dominant pollutant emitters in all observed countries. Data on the largest emitters in the countries of the European Union and a comparison with SEE countries were collected. The calculation of emissions of ...
    енергeтика, емисије, СО2, угаљ, електране
    ... Belgrade, Faculty of Mining and Geology, Belgrade, SERBIA, E-mail: aleksandar.madzarevic(orgf.bg.ac.rs ! University of Belgrade, Faculty of Mining and Geology, Belgrade, SERBIA, E-mail: predrag.jovancicOrgf.bg.ac.rs ! University of Belgrade, Faculty of Mining and Geology, Belgrade, SERBIA, E-mail: ...
    ... Germany and Poland, are the largest producers of solid fuels in Europe. 130 of Thermal power plants are in Germany, Poland and SEE region. The dominant fuel for electricity production is still coal. Europe has 243 active coal-fired power plants, with 600 blocks, and 147477 MW of an installed capacity. These ...
    ... Coal in the 21st Century, EURACOAL 2. CoalFuelforthe 21st century, European Association for Coal and Lignite AISBL 3. IEA, SO, Emissions , from Fuel Combustion - HdHighlights. Available · online: https://energy.ec.europa.eu/ 4. EURACOAL, Coal Industry Across Europe, 6 edition, European Association ...

  • Approach to operational mine planning: Case study Tamnava West

    Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković (2014)
    ... mineable coal thickness and minimum removable parting. The Tamnava West deposit is characterized by geology that is of moderate complexity, both with respect to stratigraphy and structure. The geology was originally defined by earlier work of geologists from Tamnava West mine. The Tamnava West ...
    ... on Faculty for Mining and Geology (Belgrade) with specialized tools for coal quality control management in a coal mines with continuous technology. Acknowledgement This paper was realized as a part of the project "Improvement of Lignite Opencast Technology in Order to Increase Energy ...
    ... The reason for this is excavation technology of bucket wheel excavator (BWE) which is based on individually excavation of one cut. In this sense every mining block is divided in several cuts, and BWE excavation is conducted from top cut Figure 8. Technology of BWE is very well explained by ...

  • Environmental Energy Security Indicators as Tools for Environmental Protection

    Aleksandar Madžarević, Dejan Ivezić, Marija Živković , Miloš Tansijević (2019)
    Еколошка прихватљивост је постала незаменљив синтезни показатељ сваке валидне енергетске анализе у последње две-три деценије. Енергетска безбедност је у директној хармонији с еколошком прихватљивошћу кроз многе прописане политичке циљеве, економске користи, правне тековине итд. Индикатори еколошке сигурности представљају један од основних елемената за одређивање енергетске безбедности и снажне алате за усмеравање енергетског сектора ка одрживом развоју. У овом раду, анализа је била концентрисана на показатеље енергетске безбедности у области животне средине који се односе на сектор природног гаса у ...
    енергетска безбедност, еколошки енергетски индикатори, заштита животне средине, еколошка прихватљивост
    ... 2006. 19. IEA, NOx Emissions from Fuel Combustion, 2018b, доступно на: https://webstore.iea.org/co2- emissions-from-fuel-combustion-2018-highlights 20. Henry, W.M., Knapp, K.T., Compound forms of fossil fuel fly ash emissions, Environmental Science Technology 2010, Volume 4, pp. 450-456 21. ...
    ... gc is mass fraction of fuel carbon in fuel, 3.67 is stoichiometric coefficient, H - thermal power of fuel (MJ / kg). The CO2 emission factors per unit of energy produced for different energy products are given in Table 1. Table 1. The CO2 emission factors [13] Fuel Emission [kg CO2/GJ] Biomass ...
    ... factors per unit of energy produced for different energy products are given in Table 2. Table 2. The SO2 emission factors [16] Fuel Emission [g SO2/GJ] Coal 1000 Fuel-oil 670 Natural gas 0 Fire wood 0 3.2.2 Nitrogen oxides (NOx) Nitrogen damage is manifested through combustion sub-products ...

  • Micro- to nanoscale textures of gold in arsenopyrite and scorodite from the As-Au-Bi assemblage of Drenjak locality (Serbia)

    Ivana Jelić, Janez Zavašnik, Marina Lazarov, Alena Zdravković, Sabina Kovač, Jovica Stojanović, Aleksandar Pačevski (2023)
    Arsenopyrite and pyrite are important carriers of Au that is present in the form of microscopic and “invisible” gold. Such gold can be expected to be released upon the process of oxidation of these sulfides. In studied gold mineralization at Drenjak, related to the granitoids of the Oligocene-Miocene Kopaonik Ore District, the main arsenopyrite-pyrite-(bismuthinite) sulfide assemblage was formed in the quartz bodies and partly replaced by scorodite (FeAsO4·2H2O) and Bi-arsenate. With only up to 5 ppm of gold recorded ...
    Economic Geology, Geochemistry and Petrology, Geology