Publications Scientifiques

Permanent URI for this communityhttps://dspace.univ-boumerdes.dz/handle/123456789/10

Browse

Author: search.filters.author.Hachemi, MadjidSubject: search.filters.subject.Catalyst

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Catalytic effects of eggshell ash on the conversion of used engine oil to fuel by pyrolysis
    (Taylor and Francis, 2022) Zerdane, Youghourta; Largeau, Jean François; Hachemi, Madjid; Tazerout, Mohand
    The objective of this work is to recycle used engine oil until it is converted into an alterna- tive fuel by catalytic pyrolysis. The effect of using eggshell ash as a catalyst in pyrolysis reac- tions on the yield of the resulting fractions was investigated. In addition, the influence of this catalyst on the compositions and the quality of the non-condensable gas and liquid fractions were analyzed. The results show that the liquid fraction recovered 97.02%wt; with 20%wt of the catalyst is predominant. The detection of aromatics 15.84%wt, olefins 32.74%wt, naphthenic 2.82%wt, paraffins 29.00%wt, and alcohols 20.50%wt, in the pyrolytic liquid and the observation of H2 15.22%wt, CH4 16.65%wt and other elements such as C4H8 21.93%wt in non-condensable gases, make it possible to predict the good usability of these products obtained as an alternative fuel.
  • No Thumbnail Available
    Item
    Experimental investigation on petroleum sludge valorization into fuel via pyrolysis process
    (Springer Science and Business Media B.V., 2017) Bellahcene, Amal; Hachemi, Madjid; Largeau, Jean-François; Tarabet, Lyes; Burnens, Gaëtan; Khiari, Karim; Tazerout, Mohand
    Oil sludge (OS) has been of key concern due to its continuing effect on the environment degradation. The huge quantities thrown yearly of this waste contain a high proportion of hydrocarbons which are valuable for recovery. This study focused on the oil sludge conversion into a fuel for a diesel engine by thermal/catalytic pyrolysis process. The experiments were conducted at atmospheric pressure in a batch reactor operated without and with two catalyst types: TiO2 (3 and 5 wt%) and Al2O3(3 and 5 wt%). Overall all test conditions followed in the OS pyrolysis, a considerable liquid fraction is recovered (around 70%), as compared to the gaseous fraction (around 25%) and the solid residue (around 5%). The characterization of the pyrolytic oil samples, containing approximately 11.70% of oxygen, showed also that the use of 5% of Al2O3 catalyst in the OS cracking provide the best fuel quality with a minimum viscosity value (3.5 mm2/s), a maximum heating value (45.72 MJ/kg) with a hydrocarbon compounds in the range (C7–C32) which are detailed by GC–MS analysis. The others properties (density, flash point, pour point and cloud point) are found to be close to those of diesel fuel. Also, the catalysts effect is studied on the others pyrolysis products. The obtained results allow to predict the good usability as a diesel like fuel. Further tests to control engine performance and pollutant emissions could be done Graphic Abstract