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Wyszukujesz frazę "Makara, A." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-5 z 5
    Tytuł:
    The synthesis of tripolyphosphate using a one-stage method and a laboratory rotary kiln
    Autorzy:
    Kowalski, Z.
    Makara, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/779187.pdf
    Data publikacji:
    2014
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    sodium tripolyphosphate
    rotary kiln
    calcining
    one-stage method
    Opis:
    In the study, sodium tripolyphosphate (STPP) was obtained according to the one-stage method. Batch mixes with varied degrees of soda ash neutralization were produced using thermal or wet processing phosphoric acid and/ or recycled STPP calcined in a laboratory rotary kiln. Chromatographic analysis of the phosphate forms showed that products containing as much as 94.73% of a single component were produced. At STPP recycling rates of 2.5 and 5, products with a low bulk density ranging between 0.437-0.547 kg/dm3 were obtained. The recycling of STPP reduces the insoluble substance content, which affects the properties of the product. The phase composition of the products largely depends on the type of recycled phase of sodium tripolyphosphate (phase I and/or phase II) and the calcining temperature.
    Źródło:
    Polish Journal of Chemical Technology; 2014, 16, 1; 36-40
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Obtaining protein hydrolysates with chemical and enzymatic methods
    Autorzy:
    Kowalski, Z.
    Makara, A.
    Banach, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/779318.pdf
    Data publikacji:
    2011
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    odpady mięsne
    hydrolizat białkowy
    metoda chemiczna
    metoda enzymatyczna
    meat waste
    protein hydrolysate
    chemical method
    enzymatic method
    Opis:
    The goal of our research was to work up a method of hydrolisates protein production using as raw material fresh pork meat-bone tissue after dismantling the process of half carcasses. Actually this raw material was practically all utilized as waste. The results of laboratory research and an industrial test allowed to state that is possible to produce hydrolysates containing 8 - 10% of proteins, and the most advantageous parameters of the chemical process are: the reaction time ˜105 min., temperature 120°C, pressure 3.0 bars. With the use of enzymes (Protamex and Flavourzyme), it is possible to obtain a non-gelling protein hydrolysate with a high degree of clarity and light cream colour. The best results were achieved with the following parameters: the meat-bone feedstock to the water ratio from 1:1 to 1:2, the temperature of 40 - 45°C, the time of the process 3 h, pH ˜6.
    Źródło:
    Polish Journal of Chemical Technology; 2011, 13, 1; 41-46
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Increasing the bulk density of STPP - influence of the process parameters
    Autorzy:
    Gorazda, K.
    Banach, M.
    Makara, A.
    Wzorek, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/779274.pdf
    Data publikacji:
    2011
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    tripolifosforan sodu
    STPP
    gęstość nasypowa
    sodium tripolyphosphate
    high bulk density
    Opis:
    The new requirements that were placed on STPP, like high bulk density, the proper relation of Form I and Form II and suitable physicochemical properties, resulted in the development of the present production methods. The paper presents the research results on increasing the bulk density of STPP by a chemical method. In the introduced method the solid sodium phosphate from spray drying and sodium orthophosphate solution, after acid neutralization, were rubbed together. Such an operation changes the physicochemical properties of the dried sodium phosphate before calcining, which results in increasing the bulk density of STPP to a level of 0.80 kg/dm3. The dependence of STPP bulk density on process parameters such as: sodium orthophosphate solution to solid sodium phosphate mass ratio, temperature of dosed sodium orthophosphate solution, as well as the calcining temperature of mixtures were analysed.
    Źródło:
    Polish Journal of Chemical Technology; 2011, 13, 2; 40-45
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The impact of dry mass content in pig liquid manure on its treatment with a filtration method
    Autorzy:
    Kowalski, Z.
    Makara, A.
    Marszałek, M.
    Hoffmann, J.
    Hoffmann, K
    Powiązania:
    https://bibliotekanauki.pl/articles/778774.pdf
    Data publikacji:
    2014
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    pig manure treatment
    filtration method
    dry mass
    filtrate
    Opis:
    The present study examines the impacts of dry mass content in pig liquid manure on its treatment with a filtration method. Samples of liquid manure with variable dry mass content were subjected to treatment using phosphoric acid, sulfuric acid, lime milk and superphosphate, as well as to thermal treatment, while in the last phase of pressure filtration. Increased dilution of the manure resulted in a reduced raw materials consumption ratio and improved filtration process efficiency, which ranged from 408 to 3765 kg/m2/h. The highest filtration efficiency was achieved using manure containing 3% dry mass, while the lowest efficiency was observed in manure at 10% dry mass. The increase in liquid manure dilution also reduced chemical oxygen demand in the filtrate, which ranged from 15 062 to 3656 mg/l. An appropriate manure dilution level, under the constant parameters of the treatment process, reduced phosphorus content in the filtrate to < 10 mg/kg Chile simultaneously enriching the post-filtration sediment with this precious fertilizing component.
    Źródło:
    Polish Journal of Chemical Technology; 2014, 16, 3; 106-110
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative evaluation of sodium tripolyphosphate production technologies with the use of a complex quality method
    Autorzy:
    Kowalski, Zygmunt
    Makara, Agnieszka
    Henclik, Anna
    Kulczycka, Joanna
    Cholewa, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/779504.pdf
    Data publikacji:
    2020
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    life cycle assessment
    sodium tripolyphosphate
    technological quality
    environmental evaluation
    economic evaluation
    Opis:
    A technological quality method was used to compare two methods of sodium tripolyphosphate (STPP) production. The first method was the classic spray method (CM) and the second was a dry single-stage method (DSM). The assessment criteria were environmental, based on Life Cycle Assessment (LCA) evaluation and economic, based on production costs. The technological quality assessment of CM was 6.5% lower in comparison to DSM. LCA environmental analyses showed that the partial environmental quality of DSM was lower by only 4.4% compared to CM. Partial economic quality was lower by 10.3%, mainly due to the lower energy costs (on average 52%) for DSM. The advantage of the new DSM method is the technological progress achieved, mainly due to the application of new technology, design, and apparatus solutions; thus, the basic elements of the activities proposed in the methodology allow for cleaner STPP production.
    Źródło:
    Polish Journal of Chemical Technology; 2020, 22, 4; 48-54
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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