Publications Scientifiques
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Item Recycling used cooking oil into a biobased epoxide by experimental design using R(Routledge, 2025) Bourkaib, Nor El Houda; Irinislimane, Ratiba; Belhaneche-Bensemra, NaimaThis study investigates the optimisation of epoxidizing used cooking oil (UCO) using in-situ generated performic acid (PFA), applying a full factorial experimental design and statistical analysis in R. Key process variables included the molar ratios of C=C to hydrogen peroxide and formic acid, reaction temperature (40–60°C), and time (3–5 hours). The optimal conditions C=C:H₂O₂:HCOOH ratio of 1:2.7:0.8, 60°C, and 3 h yielded an oxirane oxygen content (OOC) of 84.2% with 96.3% selectivity. A kinetic study under these conditions revealed a pseudo-first-order reaction, with an activation energy of approximately 14.7 kcal·mol−1. These findings highlight the potential for substituting fresh oil with UCO in industrial epoxide production, promoting resource efficiency and sustainabilityItem Experimental and modelling study of adsorption and diffusion of hexavalent chromium in zeolitic imidazolate framework-11(Taylor and Francis, 2025) Lamari, Rachid; Benotmane, Bénamar; Megherbi, Hamza; Brahmi, Aghilas; Djaoui, Souad; Trari, MohamedIn this study, Zeolitic Imidazolate Framework-11 (ZIF-11) was successfully synthesised at room temperature and characterised by XRD, SEM/EDAX, TGA/DSC, FTIR, and CO₂ adsorption techniques. The material exhibited high crystallinity, well-defined morphology, a thermal stability up to 350 °C, low synthesis cost, and the possibility of scaling up production. Motivated by these favourable properties, ZIF-11 was investigated as an adsorbent for the removal of (Formula presented.) from aqueous solutions. Optimal adsorption conditions were found to be a pH 2, a stirring speed of 400 rpm, a contact time of 70 min and a 20 mg dose of ZIF-11 for 50 mL of (Formula presented.) solution. Thermodynamic studies indicated that the adsorption process is spontaneous and endothermic. Kinetic analysis showed that the adsorption follows the pseudo-second-order model, suggesting chemisorption as the dominant mechanism. Isotherm modelling using Langmuir and Freundlich equations confirmed a uniform distribution of (Formula presented.) species on the ZIF-11 surface. The maximum adsorption capacity of ZIF-11 was found to be 10.61 mg/g, surpassing many reported adsorbents. These findings demonstrate that ZIF-11 is a highly promising material for the (Formula presented.) removal from water. Its excellent adsorption capacity, thermal stability, and ease of synthesis highlight its potential for practical applications in water treatment and environmental remediation.Item Implementation of a real-time stereo vision algorithm on a cost-effective heterogeneous multicore platform(WILEY, 2022) Saidi, Taki Eddine; Khouas, Abdelhakim; Amira, AbbesStereo vision is a major computer vision technique commonly used for robotics appli- cations. Existing software implementations of this technique on general-purpose pro- cessors offer low time-to-market compared to other platforms. However, such imple- mentations can hardly achieve real-time and their cost is usually relatively high. These issues can be solved by embedded multicore platforms. In this article, we present a low-cost, improved software implementation of a stereo matching algorithm in the cor- relation stage that combines a sparse rank transform with a combination of sum of absolute differences 1-D and 2-D box filtering algorithms. A circular buffer scheme is used to optimize memory usage during the rank computation stage. The system runs on a heterogeneous multicore platform (ODROID XU4). Through the extensive use of single instruction multiple data Neon intrinsics, the system can process images with a size of 320 × 240 pixels and a disparity range of 20 pixels at a rate of 111 frames per second. The proposed system can be used in mobile robot platforms that require low power consumption while delivering real-time performance.Item Elaboration and characterization of foam glass based waste Asian(2011) Ayadi, A.; Stiti, N.; Benhaoua, F.; Lerari, Y.; Benzerg, R.; Legendre, L.The porous glass ‘foam glass’ is considered as the new glass products fulfill certain requirements in the building industry in particular (thermal and acoustic insulation). The production of foam glass based waste glass plays an important role in environmental protection and also gains in energy. As part of present work, we seek to improve the properties of glass to obtain a building material lighter with excellent insulation properties. The properties of foam glass depend on the porosity and morphology. The present work devoted to analyze the microstructure of the glass produced by scanning electron microscopy and optical microscopy to be more precise on the size and shape of pores constitute this materialItem Adsorption of chromium Ions from aqueous solution using mixed sorbents prepared from olive stone and date pit(Ebscohost, 2012) Aksas, Hammouche; Babakhouya, Naouel; Babaci, Hakima; Feggas, R.; Louhab, K.The aim of this study is to remove chromium ions from aqueous solutions by adsorption. Mixed sorbent prepared from olive stone and date pit, an agricultural solid by-product was used as adsorbent. The adsorption experiments of Cr onto the mixture of olive stone and date pit were conducted at different parameters such as, per cent of olive stone and date pit in the mixture, temperature, initial solution pH and initial chromium concentration. Adsorption isotherms were obtained at different per cent of olive stone and date pit in the mixture. This adsorption data was fitted with the Langmuir, Freundlich and Temkin isotherms. In addition, the thermodynamic parameters, standard free energy (ΔG°), standartd enthalpy (ΔH°) and standard entropy (ΔS°) of the adsorption process were calculated. The results show that the mixture sorbent from olive stone and date pit is an alternative low-cost adsorbent for removing chromium ions