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Performance of the fixed-bed process for the treatment of oil well effluents using autoclaved cellular concrete as a novel biological support
 
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Ukryj
1
Laboratory of Industrial Process Engineering Sciences, Faculty of Mechanical Engineering and Process Engineering, University of Science and Technology Houari-Boumediene, P.O. Box 32, El Alia 16111, Bab Ezzouar, Algiers, Algeria.
 
2
Laboratory of Industrial Process Engineering Sciences, Faculty of Mechanical Engineering and Process Engineering, University of Science and Technology Houari-Boumediene, P.O. Box 32, El Alia 16111, Bab Ezzouar, Algiers, Algeria. 2. Department of Chemistry, University Mouloud Maameri, 15000, Tizi-Ouzou, Algeria
 
3
Laboratory of Energy Processes and Nanotechnologies, Faculty of Sciences, University Saad Dahleb, Blida 1.
 
4
LASIRE, Équipe Physico-Chimie de l’Environnement, CNRS UMR 8516, Université de Lille, Sciences et Technologies, CEDEX, 59655 Villeneuve-d’Ascq, France. Department of Chemistry, Université d’Artois, IUT de Béthune, 62400 Béthune, France.
 
 
Autor do korespondencji
BADANI Zahia   

Laboratory of Industrial Process Engineering Sciences, Faculty of Mechanical Engineering and Process Engineering, University of Science and Technology Houari-Boumediene, P.O. Box 32, El Alia 16111, Bab Ezzouar, Algiers, Algeria.
 
 
 
SŁOWA KLUCZOWE
DZIEDZINY
STRESZCZENIE
This study aims to evaluate the performance of a fixed-bed process for treating oily wastewater from oil fields in southern Algeria using autoclaved cellular concrete (ACC) as a novel bacterial support. The experimental setup consists of a column filled with ACC, forming a fixed bed. The bioreactor is inoculated with mixed sludge and operates continuously with upward flow. The inhibitory effect of iron on COD removal was evaluated using iron concentrations of 5, 15, and 85 mg/L. Removal efficiencies of key parameters were measured to assess bioreactor performance. Chemical oxygen demand (COD) removal rates reached 90%, 91%, and 92% at Fe²⁺ concentrations of 5, 15, and 85 mg/L, respectively. Corresponding Fe²⁺ elimination rates were 98%, 95%, and 97%. A high Fe²⁺ concentration of 85 mg/L did not inhibit hydrocarbon biodegradation. Autoclaved cellular concrete was characterized using scanning electron microscopy (SEM), which revealed a porous structure and a rough surface conducive to bacterial adhesion and growth. Energy-dispersive X-ray Spectroscopy (EDX) analysis showed that the support is primarily composed of silica (Si), oxygen (O), and calcium (Ca), with minor amounts of iron (Fe), magnesium (Mg), and potassium (K). The absence of toxic materials in the support confirms its suitability as a bacterial support.
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