Browsing by Author "Berrabia, Nadjet"

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    Désulfuration oxydative sous irradiations microondes d'une charge réelle de diesel avec les oxo-complexes de vanadium, les liquids ioniques acides et le peroxyde d'hydrogène
    (2015) Berrabia, Nadjet
    Trois oxo-complexes de vanadium, VO(acac)2, [VO(acac)2Py], et [VO(acac)2BZA] ont été synthétisés, puis identifiés par FTIR. Deux liquides ioniques acides de Bronsted (LIAB) [CH2COOHPy][HSO4] et [HPy][H2PO4] ont été préparés et caractérisés par FTIR, RMN 1H, et RMN 13C, leurs forces d'acidités étaient mesurées par UV-vis. La desulfuration oxydative assiste par microondes d'une charge reelle de gazole etait etudiee en combinant les oxo-complexes de vanadium autant que catalyseurs, les LIAB autant qu'extracteurs, et le H2O2 a 30% autant qu'oxydant. Le système VO(acac)2/[CH2COOHPy][HSO4] /H2O2 parait le plus performant. L'optimisation des parametres operatoires par le logiciel MODDE 6.0 a permet d'atteindre un rendement de 81% sous les conditions : ratio massique (catalyseur/gazole)= 0,4%, ratio volumique (LIAB/gazole)= 11%, t= 70 s, Voxydant= 1ml, et puissance des radiations = 500W. Le système catalytique (catalyseur/LIAB) était recyclé six fois sans diminution significative dans le rendement de désulfurisation
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    Extractive/Oxidative desulfurization optimization of diesel feed stock by ionic liquid utilization/ thermodynamic analysis
    (2022) Rahawi, Qasim Y.; Berrabia, Nadjet; Hamada, Boudjema; Daabo, Ahmed Mahmood
    The current research paper focuses on the physico-chemical optimization’s parameters for the Microwave Assisted Extractive/ Oxidative Desulfurization (MAEOD) of a real Algerian diesel. The oxidative desulfurization was carried out using vanadyl acetyl acetonate as catalyst, hydrogen pyroxide (30%) as oxidant and an acid Bronsted Ionic Liquid (IL) in situ synthesized as extractor. The utilized optimization method is consistent with the full factorial experiment. The engaged parameters are the masse ratio (catalyst/oil), the volume ratio (IL/oil), and the reaction time. Quantification of total sulfur in samples was realized by X-ray fluorescence and a regression model is formed. The most important model parameters’ interaction effects are examined and the ISO-response curves are outlined in order to simulate the optimal conditions
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    Vanadium-catalyzed extractive oxidesulfurization of commercial diesel in ionic liquid with combined oxidizing agents
    (Taylor & Francis, 2019) Benmabrouka, Hafsa; Mesdour, Souad; Boufades, Djamila; Moussiden, Anissa; Berrabia, Nadjet; Tliba, Louey; Boudjema, Hamada
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    Vegetable oils extraction of polycyclic aromatic hydrocarbons from an Algerian quagmire
    (2014) Hamada, Boudjema; Berrabia, Nadjet; Pemanos, Yelda Bakoz; Gherbi, Abdellah
    Polycyclic aromatic hydrocarbons (PAHs) are carcinogenic substances which are resistant to environmental degradation due to their high hydrophobic nature. Soil contaminated with PAHs pose potential risks to human and ecological health, therefore concern over their adverse effects have resulted in extensive studies on their removal from contaminated soils. The main propose of this work was to extract this pollutants from two real quagmire samples from the region of Hassi Messaoud (Algeria), using three kinds of vegetable oils (Peanut oil, rapeseed oil, and coconut oil) which are naturals, cost effectives, and biodegradables extractors at two different temperatures (30 and 70 °C). Three PAHs that are representing of their present in contaminated quagmire were characterized using IR-FTIR and HPLC