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Упит dcterms_subject_txt:емисија гасова

357 items

  • DFT study of free radical scavenging activity of erodiol

    Zoran Marković, Jelena Đorović, Milan Dekić, Milanka Radulović, Svetlana Marković, Marija Ilić (2013)
    Antioxidant activity of erodiol was examined at the M05-2X/6-311+G(d,p) level of theory in the gas and aqueous phases. The structure and energy of radicals and anions of the most stable erodiol rotamer were analyzed. To estimate antioxidant potential of erodiol, different molecular properties were examined: bond dissociation enthalpy, proton affinity together with electron transfer energy, and ionization potential followed by proton dissociation enthalpy. It was found that hydrogen atom transfer is the prevailing mechanism of erodiol behavior in gas; ...
    депсиде, еродиол, механизми за уклањање слободних радикала, БДЕ, ИП, ПА

  • Application of the PROMETHEE and VIKOR methods for selecting the most suitable carbon dioxide geological storage option

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac (2019)
    CO2 storage in geological formations is one of the leading solutions for mitigation of greenhouse gas emissions. Types of geological formations that can be used for CO2 storage, that are discussed in this paper are: depleted oil and gas reservoirs, saline aquifers and injection CO2 in partially depleted oil reservoirs for enhanced oil recovery (EOR–CO2 method). In order to select the most suitable geological storage of CO2, the ranking of these storage options was performed using two methods of ...
    Prometej, vikor, višekriterijumsko odlučivanje, geološko skladištenje

  • A survey of greenhouse gases production in central European lignites

    Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid
    ... lignite remains largely unrecognized. Both the guidelines for national greenhouse gas inventories (Eggleston et al., 2006) and the recently updated version in- dicate that “surface mines may continue to emit methane as the gas leaks from the coal seams thatwere broken or damaged duringmining” but “there ...
    ... septa and aluminium cap to allow for headspace gas sampling. Measurements were conducted at 30 °C. Triplicate samples were prepared for each treatment. The concentrations of gases (CH4, CO2) during the experiment were determined using a Varian 3800 gas chromatograph equipped with flame ionization (FID ...
    ... was set to 120 °C and oven temperature was set to 40 °C. Helium was used as the carrier gas. Methane and carbon dioxide production rate was determined based on the linear increase in the concentration of a given gas in time and expressed as a nmol per gram dry mass per day (nmol g-1 day-1). 2.6. Global ...

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija
    ... es, their further degradation into gas is favoured. The yield of gas obtained by co-pyrolysis of lignite/HDPE is obviously higher than the yield of gas obtained by pyrolysis of HDPE at 400, 450, and 500 ◦C, whereas it is opposite at 550 and 600 ◦C. The yield of gas is lower in the co-pyrolysis experiment ...
    ... of 25 can significantly improve the quality of the gas composition in comparison with gas produced from lignite alone, which is primarily reflected through the elevated content of hydrocarbons. Although TGA-FTIR thermograms enable the qualitative gas composition assessment only, the obtained results are ...
    ... pyrolysates, as well as total liquid pyrolysates of HDPE, were analyzed by GC–MS technique, using an Agilent 7890A Gas Chromatograph (HP-5MS column, 30 m × 0.25 mm, 0.25 µm film thickness, carrier gas—helium with constant flow of 1.5 cm3/min), coupled to an Agilent 5975C Mass Selective Detector (Agilent Technologies ...

  • Upravljanje proizvodnjom nafte – novi alat na bazi fazi logike

    Мирослав Црногорац, Душан Даниловић, Лола Томић (2020)
    ... paljenje nekontrolisano isteklog gasa, pare ili smeše. U industriji postoji značajan broj tehnoloških procesa u kojima se obrađuju gasovi, pare ili smeše. Stabilni uređaji za detekciju gasa moraju se veoma pažljivo odabrati. Izbor stabilnog sistema za detekciju gasa, para ili smeša je ozbiljan inženjerski ...
    ... goods and human lives. The gas detection system monitors the most likely source of uncontrolled discharge of gas, steam or mixture (pipelines, tanks, gas boilers rooms, etc.) and activates alarms or protective devices to prevent the ignition of uncontrolled leaked gas, vapors or mixtures. There are ...
    ... para u sistemima za proizvodnju gasa, uskladištenje gasa, distribuciju gasa, tehničko-tehnološkim procesima, za zaštitu zatvorenog i otvorenog prostora i drugih mesta od požara i eksplozija gde se mogu pojaviti eksplozivni gasovi i pare. Prema učestalosti pojavljivanja i trajanju zapaljive i eksplozivne ...

  • Zaštita od miniranja

    Suzana Lutovac, Miloš Gligorić (2024)
    Miniranje

  • Development and evaluation of fracture gradient curve model: a case study of south-central Kazakhstan

    Branimir Stanisavljevic, Vesna Karovic Maricic, Irena Isakov (2022)
    An accurate fracture gradient value is one of the most important issues in oil and gas well design and drilling. The value of a fracture gradient is a critical parameter for determining the drilling mud weight and selecting the proper depths for setting the casing in the planning process of drilling operations. This paper proposed the new curve model of fracture gradient for the south-central Kazakhstan (central Asia) region based on the analysis of leak-off test and format integrity ...
    gradijet frakturiranja, model nove krive, projektovanje naftne bušotine, Kazahstan

  • Merenje u naftnom rudarstvu

    Snežana Aleksandrović, Branko Leković (2020)
    metrologija, ležišta nafte

  • Uporedni prikaz proizvodnje električne energije iz uglja zemalja Evrope sa najvećim udelom: politika i projekcija proizvodnje

    Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić (2022)
    Energetski razvoj zemalja Evrope decenijama je bio baziran na uglju. Instalisana snaga svih energetskih kapaciteta koji su zasnovani na uglju je preko 2000 GW. Ugalj je i dalje od bitnog značaja za dobijanje električne energije u Evropi. I pored toga što postoji veliki potencijal uglja, trend je smanjenja proizvodnje električne energije iz uglja do 2050. godine. Imajući u vidu Zelenu agendu i politiku EU, zemlje Evrope se okreću obnovljivim izvorima energije. Srbija u okviru obnovljvih izvora ima potencijala prevashodno ...
    ugalj, električna energija, 2050. godina, projekcija proizvodnje

  • Mogućnost korišćenјa toplotnih pumpi sa otpadnom toplotom iz postrojenјa za prečišćavanјe otpadnih voda kao toplotnim izvorom

    Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Boban Pavlović (2021)
    U narednom periodu se planira izgradnja nekoliko desetina sistema za prečišćavanje otpadnih voda u većim gradovima u Srbiji. Iskustva iz postrojenja koja su trenutno u radu, pokazuju da bi prečišćena otpadna voda, s obzirom na protok i temperaturu, mogla da predstavlja značajan izvor obnovljive energije. U radu su prikazani primeri dobre prakse korišćenja ove energije u sistemima daljinskog grejanja u zemljama Evropske unije. Analiziran je rad postrojenja za prečišćavanje otpadnih voda u Šapcu i razmotrena je mogućnost njegovog korišćenja ...
    toplotna pumpa, sistem daljinskog grejanja, postrojenje za prečišćavanje otpadnih voda
    ... smanjena godišnja emisija gasova staklene bašte za 150.000 t CO2. Primer 3: Helsinski, Finska [9] Helsinki, glavni grad Finske, sa više od 600.000 stanovnika, ima SDG od 1953. godine. Sistem je zasnovan na kogeneraciji u kojoj se toplota dobija sagorevanjem uglja i prirodnog gasa. Međutim, sve ...
    ... u poređenju sa gasnim kotlovima (CHP postrojenjem), veću energetska efikasnost u proizvodnji toplotne energije i smanjenje upotreba uglja. Emisija GHG gasova je smanjena za 12,80%. Primer 3: Štutgart, Nemačka [10] Novi poslovno-stambeni kompleks „Neckarpark“ u Štutgartu zauzima površinu od ...
    ... miliona m3 prirodnog gasa. Na osnovu preliminarnih podataka dobijenih analizom sprovedenom za Šabac, u [14] su analizirani mogući efekti uvođenja toplotnih u SDG u gradovima u kojima se tek očekuje izgradnja PPOV. Pokazano je da bi se postiglo smanjenje lokalne emisije CO2 od oko 13%, dok bi ...

  • Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation

    Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović (2023)
    The integration of wastewater heat pumps (using purified water) in district heating systems is analyzed in this paper. The simulation procedure is proposed to analyze the impacts of stochasticity of purified water temperature and flow to heat pump integration and operation. The analysis includes calculation of the daily and seasonal coefficient of performance, as well as fossil fuel savings and CO2 emission reduction due to wastewater heat pump use. The proposed procedure is implemented for the case study in ...
    otpadne vode, toplotna pumpa, daljinsko grejanje, simulacija

  • Remontni radovi u bušotini sa dubinskom pumpom

    Jovana Milošević (2024)
    Remontni i stimulativni radovi u naftnom inženjerstvu su radovi koji se primenjuju na bušotinama koje su već u proizvodnji ili potencijalno proizvodnim bušotinama, i u zavisnosti od toga imaju različitu svrhu. Remontni radovi predstavljaju sve radove koji su ograničeni na kanal bušotine, dok se stimulativni radovi odnose pribušotinsku zonu.U prvom slučaju remontni i stimulativni radovi kod proizvodnih bušotina služe za otklanjanje problema i povećavanje proizvodnje bušotine. Dok u drugom slučaju, kod potencijalnih bušotina su ovi radovi namenjeni završnim obradama ...
    remontni radovi, hemijska obrada, Gravel Pack, alat za instrumentaciju, puške za perforaciju
    ... Wcut = 50 %. Kumulativna proizvodnja: 1 669,1 t nafte, 5 567,6 m3 vode, 39 686,4 m3 rastvorenog gasa, 4 351 m3 slobodnog gasa. Kumulativna proizvodnja NAFTE 1669,1t GASA(slobodnog) 4351 mš GASA(rastvoronog! ________{39 6864 m VODE ____________|5567 m Nakon godinu dana dnevna proizvodnja ...
    ... PAŠIĆ, D. D. TEHNIKA IZRADE BUŠOTINA 1, BUŠAĆA POSTROJENJA. Perforating Oil and Gas Wells. (n.d.). Preuzeto sa AONG: https://www.arab-oil- naturalgas.com/perforating-oil-and-gas-wells/ Perforating Oil and Gas Wells. (2020). PETROBLOGWEB. (2016). Preuzeto sa PETROLEUM ENGINEERING, SAND PRODUCTION: ...
    ... 2020) Tipovi puška za napucavaje: • Mlazna puška • Puška s mecima • Hidraulični mlazni perforator • Mehanički perforator (Perforating Oil and Gas Wells, 2020) 14 Konvencionalni način napucavanja vrši se primenom eeksplozivnih kumulativnih punjenja i pušaka sa mecima. Konvencionalni način ...

  • The different approaches in seismic stratigraphy interpretation

    Dejan Radivojević (2018)
    U tekstu su prikazana dva osnovna pristupa u seizmostratigrafskoj interpretaciji. Prvi kao polaznu osnovu ima seizmičke sekcije, čija se interpretacija u kasnijoj fazi koreliše sa bušotinskim podacima. Drugi u prvoj fazi analizira podatke dobijene dubokim bušenjem koji se kasnije korelišu sa seizmičkim sekcijama. Prikazan je hronološki redosled i objašnjen postupak pri seizmostratigrafskoj interpretaciji oba pristupa. Ovakav način interpretacije omogućio je naftnim kompanijama detaljnije i preciznije sagledavanje geoloških odnosa, smanjenje rizika istraživanja i racionalnije projektovanje razradnih bušotina.
    seizmostratigrafija, istraživanje nafte i gasa, karakteristične seizmičke sekvence, seiz-mofacijalna analiza
    ... geoloških odnosa, smanjenje rizika istraživanja i racionalnije projektovanje razradnih bušotina. Ključne reči: seizmostratigrafija, istraživanje nafte i gasa, karakteristične seizmičke sekvence, seiz- mofacijalna analiza 1. UVOD Seizmostratigrafija je tehnika interpretacije strati- grafskih informacija ...
    ... zamki) i smanjivanja rizika istraživanja. Pored toga primena seizmostratigrafije je omogućila bolje upravljanje već otkrivenim ležištima nafte i gasa. U radu su prikazana dva osnovna pristupa seizmo- stratigrafskoj interpretaciji koji se razlikuju u početnoj fazi (u zavisnosti od količine podataka ...
    ... into geological features, reduction of exploration risk and more rational design of development wells. Key words: seismic stratigraphy, oil and gas exploration, operational seismic sequence, seismic facies analysis ...

  • Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae

    Hans Peter Nytoft, Geir Kildahl-Andersen, Sofie Lindström, Frode Rise, Achim Bechtel, Danica Mitrović, Nataša Đoković, Dragana Životić, Ksenija A. Stojanović (2019)
    Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMRspectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10?20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270?146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant ...
    Geochemistry and Petrology

  • Увођење доменских и семантичких маркера за област рударства у српске електронске речнике

    Иван Обрадовић, Александра Томашевић, Ранка Станковић, Биљана Лазић (2017)
    ... флотацијска пулпа, згушњавања, лужење, центрифу- гирање, депоновање +Petroleum Експлоатација нафте и гаса нафта, гас, угљоводонични флу- ид, бушотина, цевовод, динамика протока, гас лифт, гасоводни сис- тем Како би се омогућила екстракцију специфичних концепата и релација међу концептима ...
    ... Заштита на раду Постојећи маркер са предлогом промене назива +Safe вентилација, заштитна опрема, бука, вибрације, минерална прашина, штетни гасови, повреда на раду, професионално обољење, пожар, заштита од пожара, експлозија, служба спасавања +Transport Транспорт Предложен нови маркер т ...
    ... велике об- ласти унутар рударског домена (површинска експлоатација, подземна екс- плоатација, припрема минералних сировина и експлоатација нафте и гаса), које се разликују у толикој мери да оправдавају увођење додатних маркера. Поддоменски маркери би се придруживали доменском маркеру, па би тако ...

  • 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
    ... blications/publication/WorldEnergyOutlookSpecialReport2016EnergyandAirPollution.pdf (accessed 28.8.2019.) 5. Larry E. Erickson, Reducing greenhouse gas emissions and improving air quality: Two global challenges, Environ Prog Sustain Energy. 2017 Jul; 36(4): 982–988 6. World Health Organization, https://www ...
    ... stat.gov.rs/G2019/Pdf/G20195645.pdf (accessed 28.8.2019.) 9. Intergovernmental panel on climate change, 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Volume 2, Energy, available at: https://www.ipcc-nggip.iges.or.jp/public/2006gl/vol2.html (accessed 28.8.2019.) 10. IEA, Key World Energy ...
    ... image11.emf image12.emf image13.emf image14.emf image1.png image2.wmf Wind 0.03% Hydro 5.26% Solar 0.01% Coal 49.36% Oil 23.77% Natural gas 14.75% Geothermal 0.03% Biomass 6.80% Hydro 26.32% Wind 0.13% Solar 0.04% Thermal Power Plants and CHP 73.51% Industry 27.62% ...

  • Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking

    Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović (2024)
    Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...
    non-detonating, chemical mixture, rock breaking, borehole pressure

  • 2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem

    Branislav Sretenović, Filip Arnaut, Ivana Vasiljević, Vesna Cvetkov (2019)
    2D inversion, geoelectrical method, Wenner array, ecology, Ada Huja
    ... in landfills, such as production of benzene, toluene and ethyl-benzene in gas or leachate form. There is evidence that PET disposal can lead to the upsurge of hydrogen-sulfide concentrations (potentially deathly gas in higher concentration values)by sulfide-reducing bacteria (Webb et al., 2013) ...
    ... 45-60% of the total emitted gas from a landfill, carbon-dioxide takes the rest 40-60% leaving just around 1% to other gases (Marković and Stevović, 2016). The presence of water vapor 74 Sretenović B., Arnaut F., Vasiljević I., Cvetkov V. can speed up the process of gas production. This is of great ...
    ... measurements to determine how much subsurface gas is present (methane, hydrogen-sulfide, carbon-monoxide, carbon-dioxide etc.), and hydrogeological measurements for the quality of the underground water. REFERENCES ALEXANDER, A. (2010) An Overview of Landfill Gas Energy, Landfill Methane Outreach Program ...

  • Mikroelementi u uljnim šejlovima Aleksinca i njihov uticaj na životnu sredinu

    Nikoleta Aleksić (2021)
    ... dioksid (SO2) koji ima ključnu ulogu. U atmosferu se SO2 emituje iz antropogenih i prirodnih izvora (vulkanski gasovi i emisija anaerobnih sredina), mada se procenjuje da više od 70% globalne emisije SO2 oslobađaju antropogeni izvori [5]. Glavni antropogeni izvor SO2 jeste sagorevanje fosilnih goriva koja ...
    ... toplotni izvor čine tri kotlovske jedinice kapaciteta od po 8,2 MW (24,6 MW), a kao pogonsko gorivo koristi se prirodni gas [27]. Sagorevanjem prirodnog gasa ne dolazi do emisije SO2, osim kada sadrži male količine H2S [28]. Najveća masa prašine akumulirana u jednom danu po cm2 površine lista zabeležena ...
    ... Gorivni galvanski spregovi su elektrohemijski sistemi u kojima se energija proizvodi na bezbedan način, bez sagorevanja i u idealnom slučaju bez emisije štetnih gasova. Ekološki najpovoljnije gorivo za gorivni spreg je vodonik, jer se oksidacijom vodonika i redukcijom kiseonika kao jedini proizvod reakcije ...

  • Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels

    Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković (2023)
    drilling fluid formulation, upstream oil and gas, fluid dynamics, fluid loss control, gel