Publications Internationales
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Item Ten-year assessment of the stabilization/solidification method applied to Algerian oil-based drill cuttings: Ain Amenas oil field case study(Springer Science and Business Media, 2025) Lounas, Oualid; Malek, Ammar; Aribi, Chouaib; Bouaissi, Aissa; Rekbi, Fares Mohammed Laidhe effective management and permanent monitoring of the treatment quality of hydrocarbon-contaminated drill cuttings from oil activities constitute major environmental challenges for ensuring treatment’s sustainability and long-term protection of ecosystems. This study investigates the effectiveness of the stabilization/solidification (S/S) process using cement and sodium silicate for treating this hazardous waste from the Ain Amenas site in Algeria. The short-term environmental performance of the process was assessed on cuttings stabilized for a decade, through leaching tests, focusing on parameters such as the total hydrocarbon index (THI), chemical oxygen demand (COD), biological oxygen demand (BOD5), total organic carbon (TOC), and concentrations of heavy metals. Other analyses such as XRD, XRF, and combined (SEM/EDX) were carried out on the stabilized cuttings. Preliminary findings demonstrate successful immobilization of hydrocarbons, organic matter, and several heavy metals (Ni, Zn, Cd, Pb, Hg). However, chromium consistently exceeded tolerable leaching limits, motivating the need to establish potential reasons. SEM/EDX structural analysis showed a heterogenic solid cement matrix with porous areas, enriched in quartz, carbonates, and calcium silicate hydrates (C-S-H), indicative of durable structural properties. XRD effectively showed the complexation of trivalent and hexavalent chromium forms within many cement molecules. However, high levels of residual chlorides and organic matter are of concern as they can successively cause weakening of structures and oxidative action of heavy metals and their release. While S/S is effective in converting pollutant cuttings into a stable form, its weakness in chromium retention requires further optimization to ensure its safe and sustainable application in waste disposal or reuse strategiesItem Biosorption of zinc (II) from synthetic wastewater by using Inula Viscosa leaves as a low-cost biosorbent : experimental and molecular modeling studies(Elsevier, 2023) Rouibah, Karima; Ferkous, Hana; Delimi, Amel; Himeur, Touhida; Benamira, Messaoud; Zighed, Mohammed; Darwish, Ahmad S.; Lemaoui, Tarek; Yadav, Krishna Kumar; Bhutto, Javed Khan; Ahmad, Akil; Benguerba, YacineThe use of biosorption as a strategy for lowering the amount of pollution caused by heavy metals is particularly encouraging. In this investigation, a low-cost and efficient biosorbent, Inula Viscosa leaves were used to remove zinc ions (Zn2+) from synthetic wastewater. A Fourier transform infrared spectroscopy experiment, a scanning electron microscopy experiment, and an energy dispersive X-ray spectroscopy experiment were used to describe the support. Several different physicochemical factors, such as the beginning pH value, contact duration, initial zinc concentration, biosorbent dose, and temperature, were investigated in this study. When the Langmuir, Freundlich, Temkin, Toth, and Redlich-Peterson models were used to match the data from the Inula Viscosa leaves biosorption isotherms, it was found that the biosorption isotherms correspond most closely with the Langmuir isotherm. On the other hand, the kinetic biosorption process was investigated using pseudo-first-order, pseudo-second-order (PS2), and Elovich models. The PS2 model was the one that provided the most accurate description of the biosorption kinetics. The thermodynamics process shows the spontaneous and endothermic character of Zn2+ sorption on Inula Viscosa leaves, which also entails the participation of physical interactions. In addition, the atom-in-molecule analysis, density functional theory, and the conductor like screening model for real solvents, were used to investigate the relationship that exists between quantum calculations and experimental outcomesItem Mass transfer processes in the adsorption of Lead (Pb2+) by apricot stone activated carbon (ASAC) : isotherms modeling and thermodynamic study(Springer, 2021) Abbas, MoussaIn the present study, batch experiments were carried out to elucidate the potential of apricot stone activated carbon ASAC to remove Pb2+ ions from aqueous solution. ASAC was characterized by Bruanauer, Emmett and Teller surface area S = 80.08 (m2/g), Fourier transform infrared spectroscopy and scanning electron microscopy. The effects of various process parameters such as initial pH (2–14), adsorbent dose (5–45 g/L) initial metal ion concentration (20–0 mg/L), contact time (0–90 min), agitation speed (100–700 rpm) and temperature (298–323 k) were investigated in their respective range and their optimum conditions were ascertained. The adsorption kinetics were analyzed by the pseudo-first-order, pseudo-second-order, Elovich and intraparticle diffusion kinetic models. It was found that the adsorption of the metal ions followed pseudo-second-order kinetic model. The Adsorption isotherms were modeled with Langmuir, Freundlich, Temkin, Hasley and Harkins models and their isotherm constants were calculated. The Freundlich model fits the data with a monolayer adsorption capacity of 166.813 mg/g at pH 8. The thermodynamic parameters such as the Gibbs free energy, enthalpy and entropy were calculated to predict the nature of adsorption process. The calculated thermodynamic parameters showed that the adsorption of Pb2+ ions on ASAC is endothermic (ΔH0 = 121.38 kJ/mol) and not spontaneous (ΔG0 > 0) in natureItem Potential of sawdust materials for the removal of dyes and heavy metals : examination of isotherms and kinetics(Taylor and Francis, 2016) Sahmoune, Mohamed Nasser; Yeddou, Ahmed Reda