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Wyszukujesz frazę "response surface methodology" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Removal of benzotriazole by Photo-Fenton like process using nano zero-valent iron: response surface methodology with a Box-Behnken design
    Autorzy:
    Ahmadi, M.
    Rahmani, K.
    Rahmani, A.
    Rahmani, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/779500.pdf
    Data publikacji:
    2017
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    benzotriazole
    Photo-Fenton
    Response surface methodology
    Box-Behnken
    Opis:
    In this paper, the removal of benzotriazole (BTA) was investigated by a Photo-Fenton process using nano zero valent iron (NZVI) and optimization by response surface methodology based on Box-Behnken method. Effect of operating parameters affecting removal efficiency such as H2O2, NZVI, and BTA concentrations as well as pH was studied. All the experiments were performed in the presence of ultraviolet radiation. Predicted levels and BTA removal were found to be in good agreement with the experimental levels (R2 = 0. 9500). The optimal parameters were determined at 60 min reaction time, 15 mg L-1 BTA, 0.10 g L-1 NZVI, and 1.5 mmol L-1 H2O2  for Photo-Fenton-like reaction. NZVI was characterized using X-ray diffraction (XRD), transmission electron microscope (TEM) images, and scanning electron microscope (SEM) analysis.
    Źródło:
    Polish Journal of Chemical Technology; 2017, 19, 1; 104-112
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Parametric optimization of coal desulfurization through Alkaline leaching
    Autorzy:
    Rehman, F.
    Ahmad, S. W.
    Zafar, M. S.
    Ahmad, S.
    Zia-Ul-Haq, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/779964.pdf
    Data publikacji:
    2018
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    Desulfurization
    Alkaline leaching
    Response surface methodology
    ANOVA
    Central Composite design
    Opis:
    Desulfurization of Pakistani coal has been carried out through alkaline leaching. During present experimental investigation, the effect of operating parameters like alkali concentration, time, temperature and particle size has also been analyzed, graphically represented and critically discussed. Parametric optimization of leaching process has been carried out by using response surface methodology (RSM) based on central composite design (CCD). The analysis of variance (ANOVA) was performed in order to assess the highest level interactions of variables and three way interactions were observed significant. Further, the optimum value of total sulfur removal was observed as 53% when the operatic conditions fixed at 10% W/V, 60 min, 80°C and 140 mesh for alkaline concentration, leaching time, temperature and particle size, respectively.
    Źródło:
    Polish Journal of Chemical Technology; 2018, 20, 3; 103-109
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of Lycopene Extraction from Tomato Pomace and Effect of Extract on Oxidative Stability of Peanut Oil
    Autorzy:
    Tran, Dinh T.
    Nguyen, Lan T.
    Nguyen, Cuong N.
    Hertog, Maarten L.
    Nicolaï, Bart
    Picha, David
    Powiązania:
    https://bibliotekanauki.pl/articles/16538548.pdf
    Data publikacji:
    2023-07-05
    Wydawca:
    Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
    Tematy:
    Antioxidant
    Response surface methodology
    Optimization
    Lycopene
    Extraction
    Peanut oil stability
    Opis:
    Lycopene, the pigment principally responsible for the red color of tomatoes, is well-known for its strong antioxidant property and substantial health benefits. In this study, the optimal combination of factors for lycopene extraction from tomato pomace was identified using response surface methodology. The best practically feasible results maximizing both lycopene yield and antioxidant activity of the extract were obtained by applying a ratio of ethyl acetate to tomato waste of 35:1 (v/w), at a temperature of 55ºC for 100 min of extraction. The extract was then added to the peanut oil to evaluate its oxidative stability during 60 days of storage at 40ºC. It was shown that the addition of 2 g extract/kg oil offered the lowest level of peroxide value, p-anisidine value, and total oxidation value, followed by the oils with 50 mg butylated hydroxytoulene/kg oil and 1 g extract/kg oil, indicating the effect of lycopene-rich extract on enhancing the oxidative stability of peanut oil. The results in this study suggest that incorporation of extract rich in lycopene from tomato waste products may be an effective method to reduce oxidation and extend the shelf-life of peanut and other vegetable oils.
    Źródło:
    Polish Journal of Food and Nutrition Sciences; 2023, 73, 3; 205-213
    1230-0322
    2083-6007
    Pojawia się w:
    Polish Journal of Food and Nutrition Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of polycondensation process of alkyd resin synthesis from modified Picralima nitida seed oil suitable for surface coating of metal
    Autorzy:
    Ezeugo, J. O.
    Powiązania:
    https://bibliotekanauki.pl/articles/1076136.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Artificial Neural Network
    Picralima nitida seed oil
    Response surface methodology
    alkyd resin
    Opis:
    The potential of synthesizing an air drying alkyd resin through polycondensation of non-drying Picralima nitida seed oil (PNSO) was investigated. The structural elucidation of the raw PNSO, de-saturated PNSO and PNSO based alkyd resin were evaluated using FTIR. Design matrix and response Surface methodology were used to model the process variables. Artificial neural network was further used to examine the sensitivity analysis of the studied process variables. The results obtained showed that modified PNSO has high drying rate in the presence of drying agent, exhibit excellent adhesion, abrasion and chemical properties. Optimum responses of 82% conversion, viscosity of 269 cp and molecular weight average of 4434 g/mol were predicted at a temperature of 260 ºC, time of 134 mins, oil ratio of 0.286, catalyst concentration of 0.062 wt and a stirring rate of 595rpm. Correspondent experimental results using the same optimal conditions gave optimum conversion of 83% of alkyd resin, viscosity of 271cp and MWA of 4440 g/mol.
    Źródło:
    World Scientific News; 2019, 116; 62-90
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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