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    Wyświetlanie 1-2 z 2
    Tytuł:
    The influence of temperature fluctuation on the stability of partial nitritation applied for reject water treatment
    Autorzy:
    Radechovska, H.
    Svehla, P.
    Radechovsky, J.
    Pacek, L.
    Balik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/207642.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    anammox
    nitrifying reactor
    ścieki
    beztlenowe utlenianie amonu
    sekwencyjny reaktor okresowy
    reactor nitryfikacyjny
    anaerobic ammonium oxidation
    sequencing batch reactor
    free nitrous acid
    rich waste water
    oxidizing bacteria
    nitrification
    Opis:
    The influence of sudden and gradual temperature fluctuations on the stability of partial nitritation applied for the treatment of reject water containing ammonium nitrogen (NH4+-N) in the range of 1000 –1400 mg/dm3 was investigated. It was found that a sudden decrease in temperature from 24.3 °C to 14.3 °C and 15.8 °C significantly affected the stability of the process. No negative effect was recorded after a sudden temperature decrease from 24.3 to 17.4 °C. It was also found that during a gradual temperature decrease from 24.3 °C, process stability was negatively affected at 12.7 °C.
    Źródło:
    Environment Protection Engineering; 2017, 43, 1; 87-99
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance of a drop-in biofuel emulsion on a single-cylinder research diesel engine
    Autorzy:
    Bogarra-Macias, M.
    Doustdar, O.
    Fayad, M. A.
    Wyszyński, M. L.
    Tsolakis, A.
    Ding, P.
    Pacek, A.
    Martin, P.
    Overend, R.
    O'Leary, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/133126.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    pyrolysis oil
    emulsion
    wood pyrolysis
    engine testing
    olej popirolityczny
    emulsja
    piroliza drewna
    badania silnika
    Opis:
    Current targets in reducing CO2 and other greenhouse gases as well as fossil fuel depletion have promoted the research for alternatives to petroleum-based fuels. Pyrolysis oil (PO) from biomass and waste oil is seen as a method to reduce life-cycle CO2, broaden the energy mix and increase the use of renewable fuels. The abundancy and low prices of feedstock have attracted the attention of biomass pyrolysis in order to obtain energy-dense products. Research has been carried out in optimising the pyrolysis process, finding efficient ways to convert the waste to energy. However, the pyrolysis products have a high content in water, high viscosity and high corrosiveness which makes them unsuitable for engine combustion. Upgrading processes such as gasification, trans-esterification or hydro-deoxynegation are then needed. These processes are normally costly and require high energy input. Thus, emulsification in fossil fuels or alcohols is being used as an alternative. In this research work, the feasibility of using PO-diesel emulsion in a single-cylinder diesel engine has been investigated. In-cylinder pressure, regulated gaseous emissions, particulate matter, fuel consumption and lubricity analysis reported. The tests were carried out of a stable non-corrosive wood pyrolysis product produced by Future Blends Ltd of Milton Park, Oxfordshire, UK. The product is trademarked by FBL, and is a stabilized fraction of raw pyrolysis oil produced in a process for which the patent is pending. The results show an increase in gaseous emissions, fuel consumption and a reduction in soot. The combustion was delayed with the emulsified fuel and a high variability was observed during engine operation.
    Źródło:
    Combustion Engines; 2016, 55, 3; 9-16
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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