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    Wyświetlanie 1-9 z 9
    Tytuł:
    Determining the effect of the addition of temperature on the rheological properties of biofuels FAME and RME
    Autorzy:
    Wcisło, G.
    Pracuch, B.
    Łagowski, P.
    Kurczyński, D.
    Leśniak, A.
    Tomyuk, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/411023.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    Biodiesel
    FAME - Fatty Acid Methyl Esters
    RME - Rapeseed Methyl Esters
    diesel engine
    dynamic viscosity
    shearing rate
    biofuel mix tur
    Opis:
    The aim of the study was to compare the impact of dynamic viscosity of two biofuels. One was a mixture of 50% (m / m) SBME and 50% (m / m) RME of own production. The mixture was conventionally called FAME. The second biofuel was commercial RME from a gas station. Dynamic viscosity as a function of temperature from -20 to 50oC was tested. The main device used at the measuring stand was ReolabQC rheometer manufactured by a German Anton Paar GmbH company. Dynamic viscosity especially grew rapidly after cooling biofuels to temperatures below -5°C. Dynamic viscosity FAME biofuels produced from pure vegetable oil (soybean oil and rapeseed oil) in a temperature range of 50 to -20°C has a value of c.a. 9 to 53[mPa∙s]. Dynamic viscosity of Biofuel FAME produced from mixtures of vegetable oils it was on average lower by about 1 to 8 [mPa∙s] of RME shopping from a gas station.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2019, 8, 4; 3-7
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of various types of soybean cake to soy straw briquettes on the heat of briquette combustion
    Autorzy:
    Wcisło, G.
    Pracuch, B.
    Łagowski, P.
    Kurczyński, D.
    Tomyuk, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/411169.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    briquette
    soyben stalk
    press cake
    heat of combustion
    Opis:
    The paper presents results of research demonstrating the effects on heat of combustion of adding press cake from three varieties of soyben Erica, Mavka and Sirelia to soyben stalk based briquette. The conducted research shows that heat of combustion of soyben stalk was 15.2 [MJ∙kg-1], much lower than the heat of combustion of press cake from four. Press cake heat of combustion from the most effective Erica soyben variety was 23.4 [MJ∙kg-1], or 54% (w/w) more than that of rape stalk. Press cake heat of combustion from the least effective soyben variety was 19.8 [MJ∙kg1], or 30% (w/w) more than that of soyben stalk. Adding 20% (w/w) of press cake during briquette production Erica varieties resulted in an increase in heat of combustion by approximately 10,5; and a 40% (w/w) addition resulted in a further increase of approximately 20,4%, a 60% (w/w) addition of press cake increased heat of combustion by approximately 31,6 whereas an 80% (w/w) press cake content increased heat of combustion by more than 38,8%.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2019, 8, 3; 23-26
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Angle of injection impact on the combustion proces in a compression-ignition engine
    Autorzy:
    Łagowski, P.
    Kurczyński, D.
    Wcisło, G.
    Pracuch, B.
    Tomyuk, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/411209.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    Perkins AD3 152UR engine
    heat emission
    Opis:
    The article presents the impact of hydrocarbon fuel angle of injection on heat emission characteristics in a compression - ignition AD3.152 engine. The angle of injectionhas a significant impact on the primary engine operating parameters and combustion process indicators, which include the proportion of combustion which occurs according to kinetic and diffusion models, heat emission rate and the combustion process duration. The characteristics describing emission of a relative heat quantity were determined on the basis of an analysis of actual, indicator diagrams averaged over 100 runs, under the assumption that the combustion process ends by the time the exhaust valve opens. During the test, the engine operated according to an external speed characteristic. Tests were carried out for three fuel angles of injection: 13, 17 and 21 crankshaft rotation degrees.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2018, 7, 4; 29-36
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the SME run Perkins 1104D-44TA engine on the power and torque as well as unitary and hourly fuelconsumption
    Autorzy:
    Łagowski, P.
    Kurczyński, D.
    Wcisło, G.
    Pracuch, B.
    Leśniak, A.
    Tomyuk, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/410954.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    combustion engine
    biofuels
    methyl esters of sunflower oil
    external speed characteristics
    Opis:
    The article presents the results of tests determining the impact of using sunflower oil methyl esters on power and torque as well as unitary and hourly fuel consumption of the Perkins 1104D-44TA engine. Biofuels were produced in the Fuel and Energy Laboratory belonging to the Maopolskie Centrum Energii Odnawialnej (Małopolskie Center for Renewable Energy Sources), while analyzes of the selected fuel parameters were performed both in the above-mentioned laboratory and in the Liquid Biofuels Laboratory at the University of Agriculture in Krakow. Engine tests were carried out on the engine test stand at the Kielce University of Technology. During the tests, the engine worked according to the external speed characteristic. The results of the tests have shown that the engine supplied with the SME achieves slightly lower values of both power and torque than in the case of commercial fuel oil type Ekodiesel Ultra from the ORLEN S.A company. There was also an increase, especially in the case of higher unitary fuel consumption. Hourly fuel consumption was higher when supplied with SME in relation to the diesel fuel supply, although not as much as unitary consumption. The increase in SME consumption at the engine supply can be explained by the lower fuel value of SME, which contains oxygen in its structure.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2018, 7, 4; 49-52
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influenceof Perkins 1104D-44TA motor powered with SME supply on the CO, NOx, THC and O2 emissions
    Autorzy:
    Wcisło, G.
    Kurczyński, D.
    Łagowski, P.
    Pracuch, B.
    Leśniak, A.
    Tomyuk, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/411145.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    combustion engine
    biofuels
    methyl esters of sunflower oil SME
    external speed characteristics
    Opis:
    The paper presents the results of research on the impact of Perkins 1104D-44TA engine powered with sunflower oil methyl esters and, for comparison, with diesel fuel, in terms of emission of CO, THC, NOx and O2. The tests were carried out on the engine test stand. During the tests, the engine worked according to the external speed characteristics in the range from 1000 to 2200 rpm. The esters used for powering the tested engine were produced using the GW 200 reactor designed and made by Grzegorz Wcisło, one of the co-authors of the paper. The results of the tests carried out showed a decrease in the concentration of carbon monoxide in the exhaust gases, hydrocarbons when powering the engine with sunflower oil esters in relation to powering the engine with diesel fuel. At the same time, the concentration of nitrogen oxides and oxygen in the exhaust gases increased. The reduction of THC and CO emissions is the result of better combustion and afterburning of fuel. However, the increase in the amount of oxygen in the exhaust gases results from the fact that in the biofuel structure there is oxygen which is used in combustion and reduces the oxygen demand from the atmosphere. On the other hand, the increase in NOx emissions is the result of a higher combustion temperature than when the engine is powered by diesel fuel.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2018, 7, 4; 49-52
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ecological indicators for the Perkins 1104D-44TA engine fuelled by sunflower oil methyl esters operating according to load characteristics
    Autorzy:
    Kurczyński, D.
    Łagowski, P.
    Wcisło, G.
    Pracuch, B.
    Tomyuk, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/411432.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    compression-ignition engine
    engine ecological indicators
    load characteristics
    harmful emission contents
    sunflower oil methyl esters (SME)
    FAME Biodiesel
    Opis:
    Fuels constitute one of the research areas within the scope of piston internal combustion engines. The works encompass both conventional as well as alternative fuels. Fuels are sought which will contribute to a reduction in the negative impact of transport on the natural environment and humans. These may be fuels obtained from organic raw materials of agricultural (most often) or forest origin. When it comes to compression-ignition engines, Biodiesel B100 type biofuels can be used to fuel them, which most often constitute a long chain fatty acid ester, made from plant oils or animal fats. The publication presents ecological indicator test results for a compression – ignition engine fuelled by SME Biodiesel, or sunflower oil methyl esters and commercially available diesel as a benchmark. During the tests, the engine operated according to load characteristics at two different crankshaft rotational speeds. A sunflower oil ethyl ester fuelled engine returned beneficial values for most of the tested ecological indicators as compared to a diesel fuelled engine. Concentrations of substances such as CO, CO2, unburned hydrocarbons (THC), particulate matter (PM) were lower in the engine emissions, exhaust smoke levels were also reduced. Only nitrogen oxides (ONx) increased.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2017, 6, 4; 71-80
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    External speed characteristic for the Perkins 1104D-44TA engine fuelled by sunflower oil methyl esters
    Autorzy:
    Kurczyński, D.
    Łagowski, P.
    Wcisło, G.
    Pracuch, B.
    Leśniak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/411009.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    external characteristic harmful emission contents
    sunflower oil methyl esters (SME)
    FAME Biodiesel
    Opis:
    The publication presents test results for a Perkins 1104D - 44TA engine powered by SME sunflower oil fatty acids methyl esters. The SME biofuel was manufactured in-house using a GW-200 reactor at MCOŹE "BioEnergia". The test was carried out at an engine test stand at Kielce University of Technology's Heat Engine Laboratory. During the test the engine operated according to an external speed characteristic. The tests aimed to determine the impact of using an SME type biofuel to power the engine on the engine's primary performance indicator values. A slight decrease to the brake horsepower and torque of the tested engine powered by sunflower oil esters as compared to diesel was recorded. Fuel consumption of the engine powered by plant origin fuel also increased. No operating problems were experienced associated with powering the engine using sunflower oil esters during the tests.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2017, 6, 4; 111-120
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fotokatalityczna degradacja ampicyliny w roztworach wodnych
    Photocatalytic degradation of ampicillin in water solutions
    Autorzy:
    Makowski, A.
    Sobczak, A.
    Wcisło, D.
    Adamek, E.
    Baran, W.
    Nocoń, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/126626.pdf
    Data publikacji:
    2009
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    ampicylina
    fotokatalityczna degradacja
    ampicillin
    photocatalytic degradation
    Opis:
    Metody zaawansowanego utleniania, polegające na generowaniu reaktywnych rodników hydroksylowych, są stosowane do usuwania antybiotyków z roztworów wodnych. Mogą być też stosowane do degradacji antybiotyków do związków przejściowych, które następnie ulegają łatwiej biodegradacji. Roztwory antybiotyków naświetlano promieniowaniem UV λ = 366 nm w obecności fotokatalizatora P 25 Degussa. Zawartość ampicyliny i jej produktów przejściowych w trakcie fotodegradacji badano metodą HPLC. Stałe szybkości rozkładu ampicyliny wyznaczano z zależności logC/Co od czasu trwania procesu. Dodatek jonów żelaza do roztworu ampicyliny powoduje nieznaczny spadek szybkości jej degradacji. Wpływ jonów miedzi zależy od stosunku molowego metalu do antybiotyku. Wpływ jonów wapnia na szybkość rozpadu ampicyliny jest niewielki, natomiast w przypadku jonów magnezu i jonów kobaltu powoduje spadek szybkości degradacji ampicyliny. Na powierzchni katalizatora P 25 adsorbuje się ampicylina; proces ulega zmianie w obecności jonów metali i jonów fosforanowych.
    The advanced oxidation methods are applied to remove antibiotics from water solutions. They involve generating hydroxylic radicals (.OH) with high oxidation potential, which are able to mineralize organic compounds. They can be use to degrade antibiotics to transient metabolites, which are then easily biodegradable. They were irradiated with UV λ = 366 nm in the presence of P 25 Degussa photocatalyst. The level of ampicillin and its transient products during photocatalytic degradation was tested using the HPLC method. To estimate the photocatalytic degradation rate constants of ampicillin, the relationship log C/Co from time of duration of photocatalytic process were defined. The addition of iron ions to the ampicillin solution slightly slows down its photocatalytic degradation. The influence of copper ions on the speed of ampicillin degradation depends on the molar ratio of metal to antibiotic. The influence of calcium ions on the speed of ampicillin breakdown is not too significant, while in the case of magnesium ions, similar to cobalt ions, the ampicillin breakdown slows down. Ampicillin is adsorbed on the surface of P 25 catalyst; the process changes in the presence of metal ions and phosphate ions. The optimum of environment during the photodegradation process is pH reaction 7.2.
    Źródło:
    Proceedings of ECOpole; 2009, 3, 1; 81-86
    1898-617X
    2084-4557
    Pojawia się w:
    Proceedings of ECOpole
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fotokatalityczna degradacja doksycykliny w roztworach wodnych
    Photocatalytic degradation of doxycycline in water solutions
    Autorzy:
    Makowski, A.
    Sobczak, A.
    Wcisło, D.
    Adamek, E.
    Baran, W.
    Kostecki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/125967.pdf
    Data publikacji:
    2009
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    doksycyklina
    fotokatalityczna degradacja
    proces fotokatalityczny
    doxycycline
    photocatalytic degradation
    photocatalytic process
    Opis:
    Wśród substancji stanowiących mikrozanieczyszczenia wód powierzchniowych, ścieków i gleby znajdują się leki i ich metabolity. Najbardziej niebezpieczne są antybiotyki, gdyż są trudno biodegradowalne i wywołują powstawanie zjawiska lekooporności wielu szczepów bakterii. Zaawansowane procesy utleniania są powszechnie akceptowanymi technologiami oczyszczania ścieków, wód gruntowych i powierzchniowych z opornych i trudno biodegradowalnych zanieczyszczeń organicznych. Polegają one na generowaniu rodników hydroksylowych (•OH) o wysokim potencjale utleniającym, które są zdolne zmineralizować związki organiczne. Roztwory antybiotyków naświetlano promieniowaniem UV λ = 366 nm w obecności fotokatalizatora P 25 firmy Degussa. Zawartość doksycykliny i jej produktów przejściowych podczas fotokatalitycznej degradacji badano metodą HPLC. Stałe szybkości fotokatalitycznego rozkładu doksycykliny wyznaczano z zależności logC/Co od czasu trwania procesu. Jony żelaza i kobaltu przyśpieszają proces fotokatalitycznego rozpadu doksycykliny, natomiast jony miedzi, wapnia, magnezu i jony fosforanowe spowalniają ten proces. Na powierzchni P 25 następuje proces adsorpcji doksycykliny, największy w przypadku obecności w roztworze jonów żelaza. Jony miedzi ulegają w trakcie procesu redukcji i miedź osadza się na powierzchni fotokatalizatora. Optymalnym odczynem podczas procesu jest pH równe 6,8; nie znaleziono jednak korelacji pomiędzy stałymi szybkości rozpadu doksycykliny a pH roztworu.
    Drugs and their metabolites are among substances which micro-pollute surface waters, sewage and soil. Antibiotics are the most hazardous, as they are hardly biodegradable and trigger the formation of drug resistance of numerous bacteria strains. The advanced oxidation processes (OP) are widely accepted techniques for removing resistant and hardly biodegradable organic pollutants from sewage, as well as ground and surface waters. They involve generating hydroxylic radicals (•OH) with high oxidation potential, which are able to mineralize organic compounds. This work aims at testing the photocatalytic degradation of doxycycline and the influence of metal ions Fe3+, Cu2+, Ca2+, Mg2+, Co2+ and phosphate ions on this process, as well as at determining the optimum pH range for this process. The solutions were irradiated with UV λ = 366 nm in the presence of P 25 Degussa photocatalyst. The content of doxycycline and its transient products during photocatalytic degradation was tested using the HPLC method. To estimate the photocatalytic degradation rate constants of doxycycline, the relationship log C/Co from time of duration of photocatalytic process were determined. The iron and cobalt ions accelerate the process of photocatalytic doxycycline breakdown, while the copper, calcium, magnesium and phosphate ions slow down this process. The process of doxycycline adsorption takes place in the presence of metal ions, particularly iron. The fastest mineralization of organic substances takes place in the presence of iron ions. The copper ions are reduced during the process and copper forms a deposit on the photocatalyst. The optimum pH of the solution during the photocatalytic process is 6.8. However, no correlation was found between the constants of doxycycline breakdown rate and and pH of the solution.
    Źródło:
    Proceedings of ECOpole; 2009, 3, 1; 87-94
    1898-617X
    2084-4557
    Pojawia się w:
    Proceedings of ECOpole
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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