Génie des Procédés

URI permanent de cette collectionhttps://dspacee.univ-temouchent.edu.dz/handle/123456789/764

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Elimination de polluant par une argile synthétique modifiée
(2026) Mohcini Loubna; Berrahou-Harchaoui Ghezlane
Water pollution caused by industrial dyes, particularly azo dyes, represents a major environmental challenge due to their chemical stability and potential toxicity. The present study aims to evaluate the adsorption performance of nickel-aluminum layered double hydroxides (NiAl-LDH) for the removal of Methyl Orange from aqueous solutions and to investigate the effect of calcination on the adsorbent properties. Adsorption experiments were carried out using non-calcined NiAl and samples calcined at 450 °C for 2 h, 4 h, and 6 h. Adsorption isotherm and kinetic studies were performed to assess the adsorption capacity and to better understand the adsorption mechanism. Fourier Transform Infrared Spectroscopy (FTIR) was employed to characterize the materials after adsorption and to identify the interactions occurring between the dye molecules and the adsorbent surface. The results demonstrated that NiAl materials exhibit a significant adsorption capacity toward Methyl Orange and that calcination considerably affects their adsorption behavior. The applied isotherm and kinetic models provided valuable information about the adsorption process and enabled the determination of the model that best fits the experimental data. These findings highlight the potential of NiAl layered double hydroxides as promising adsorbent materials for the treatment of dye- contaminated wastewater.
Influence du degré de broyabilité du clinker sur les propriétés physico- mécaniques du ciment
(2026) Miloud Abid Ahlem; Zenasni Habiba; Serier Mohamed
Cement is a fundamental construction material whose physico-chemical and mechanical properties directly affect structural durability. This study investigates the influence of clinker grindability on the performance of Portland cement by analyzing the effect of fineness (45 μm sieve residue) at different levels. A second part explores the partial substitution of clinker with natural pozzolan up to 20%. The results demonstrate the maintenance of compliant mechanical strength while reducing clinker content and CO2 emissions, contributing to a more sustainable and cost-effective cement.
Procédé et caractérisation du gaz naturel, GPL et condensat
(2026) BENADIS MOHAMMED; HAMAIDA KHEIRA
This thesis deals with the characterization of natural gas, LPG, and condensate in the Ain Tsila gas field (CPF). The main issue is the degradation of the condensate color, which leads to off-specification products. The study aims to monitor the treatment efficiency as well as the physicochemical characteristics of natural gas, LPG, and condensate. Chromatographic and physicochemical analyses were carried out to check the compliance of the products with transportation and marketing standards. The physicochemical analyses performed at the CPF laboratory gave satisfactory results for all the tests, except for those related to the condensate color, whose deviation was identified and analyzed, allowing the recommendation of preventive and corrective actions.
Analyse comparative des techniques d’élimination d’un colorant alimentaire
(2026) BENDJEBBARA Chaima; TABTI Affaf
The main objective of this Master's thesis was to evaluate and compare the efficiency of two treatment methods for the removal of Patent Blue V (E131) dye extracted from a real pharmaceutical form, Biocalyptol syrup. The two studied techniques are adsorption on an eco- friendly activated carbon prepared from date pits (DPAC) and coagulation-flocculation using aluminum sulfate. UV-Visible spectrophotometric analyses performed at the maximum wavelength λmax = 640 nm demonstrated that both processes achieved high decolorization performances, exceeding 91%. Kinetic tracking of the adsorption showed an ultra-fast rate, capturing approximately 90% of the dye within the first 10 minutes. The data perfectly followed the pseudo-second-order model (R2 = 1), confirming an irreversible chemisorption mechanism with zero desorption. At equilibrium, the modeling indicated an excellent fit with the Langmuir isotherm (R2 = 1), validating a homogeneous monolayer coverage with a maximum adsorption capacity of 0.8396 mg/g. In parallel, coagulation-flocculation trials with aluminum sulfate confirmed an efficient and reproducible decolorization, dropping the residual absorbance to minimal values between 0.0187 and 0.0235 due to charge neutralization mechanisms. Although both methods exhibit very close decolorization performances, the adsorption technique on DPAC stands out as the most advantageous solution for this type of effluent. It valorizes an abundant local agricultural by-product in Algeria and constitutes a clean green engineering process that permanently traps the pollutant without requiring expensive industrial reagents and without generating complex secondary chemical sludge to treat.
Élaboration et application des biocomposites à base de biopolymère anionique
(2026) KRATTOU Maroua Naïma; BACHIR Cherifa; DRAI Ikram
This work focuses on the synthesis of a biocomposite based on sodium alginate with recycled and treated glass powder, as well as the evaluation of its efficiency towards Cu2+ ions from aqueous solutions. Waste glass powder was firstly treated with NaOH/EDTA in order to improve its surface properties. The optimal treatment conditions were determined using the (RSM) based on the (CCD), by investigating the effects of several parameters on mass loss, complexation capacity and sedimentation volume. The optimized conditions were found to be a NaOH concentration of 4.80 mol·L−1, a treatment time of 2 h 55 min, a temperature of 80 °C and an EDTA/inorganic charge ratio of 2.17% (w/w). The biocomposite was then prepared through ionic crosslinking of sodium alginate with calcium chloride (CaCl2). FTIR spectroscopy confirmed both the chemical modification of the glass powder and its successful incorporation into the polymer matrix. The adsorption performance of the biocomposite was evaluated using UV-Visible spectrophotometry. The results demonstrated a high removal efficiency for Cu2+ ions, reaching 95.09%. The kinetic and adsorption isotherm studies confirmed the effectiveness of the developed biocomposite, with the experimental data showing a better fit to the pseudo-second-order (PSO) kinetic model and the Freundlich isotherm model.
Modeling and Optimization of the Natural Gas Decarbonization Unit at the CPF (QH) Rhourde Nouss Field
(2026) BOULEFDAOUI Basma Kheira; BOURADA Bochra; BELKHADEM Fatima
Natural gas produced at the Treatment Center (CPF) of the Rhourde Nouss field in Illizi contains CO2, which must be removed to meet export specifications and avoid operational problems such as corrosion and hydrate formation. This study focuses on the simulation and optimization of the Acid Gas Removal Unit (AGRU) using an amine absorption process. The process was simulated using Aspen HYSYS based on real industrial operating data. The model was validated by comparing simulation results with industrial unit data, showing good agreement with an acceptable margin of error. A parametric study was then conducted to evaluate the effect of certain operating parameters, particularly methyldiethanolamine (MDEA) concentration and inlet CO2 content, on process performance and energy consumption. The results showed that increasing amine concentration improves CO2 removal efficiency, but also leads to higher energy consumption in the reboiler unit. This study confirms that process simulation theoretically demonstrated the effectiveness of reducing CO2 while minimizing energy consumption in natural gas treatment.
Synthèse et caractérisation du CuO les effet de concentration : Influence de la concentration sur la composition chimique, la morphologie, les propriétés électriques ,optoélectroniques
(2025) Elmiliani, Hanane; Maarouf, Sarra; HAMAIDA, Khaira
In this work, we studied the synthesis and characterization of copper oxide (CuO) thin films prepared using the spray pyrolysis technique. The main objective was to investigate the influence of precursor solution concentration on the structural, morphological, optical, and electrical properties of the deposited films. CuO, as a p-type semiconductor, exhibits promising characteristics for various applications in optoelectronics, energy conversion, and catalysis. Spray pyrolysis proved to be a simple, cost-effective, and efficient method for producing homogeneous thin films. Several characterization techniques were employed, including X-ray diffraction (XRD), atomic force microscopy (AFM), photoluminescence spectroscopy (PL), Fourier-transform infrared spectroscopy (FTIR), as well as electrical measurements using the four-point probe method and Hall effect. The results showed that varying the precursor concentration significantly affects the crystallinity, surface roughness, electrical conductivity, and optical absorption of the films. This study highlights the potential of CuO as a functional material for optoelectronic devices and emphasizes the importance of optimizing deposition conditions to achieve enhanced performance. It also opens up further research opportunities into CuO doping and its integration into more complex structures.
Aperçu sur le génie des procédés des matériaux
(2025) TEMMOUN, Sid Ahmed; TOUMI, Ibrahim El Khalil; BENSAAD, Bourassia
This Master's thesis in Materials Process Engineering presents an in-depth study of materials science, focusing on their definition, classification, and fundamental properties. It distinguishes five major families of materials: metals, polymers, ceramics, composites, and semiconductors, detailing their mechanical, thermal, electrical, optical, and chemical characteristics. The analysis of micro and macrostructure, as well as phase diagrams, helps to understand the influence of internal organization on their performance. The thesis also highlights the importance of manufacturing processes, particularly welding, and their impact on the mechanical properties of iv materials. A welding simulation is carried out to evaluate its effects on the strength and deformation of welded materials. This comprehensive approach aims to optimize the selection and implementation of materials to meet the increasing demands of modern industry, thus ensuring innovation and quality in various technological sectors.
Study of Hydrocarbon Adsorption from Industrial Effluents Using Mesoporous Materials
(2025) SI ALI, Rihab; RAHMOUN, Imane; Dr. CHOUAT Nadjat
This work focuses on the study of hydrocarbon adsorption from industrial effluents using mesoporous materials, particularly MCM-41 and its modified forms. These pollutants, which are often difficult to remove using conventional methods, pose a serious environmental threat. The study covers both the theoretical aspects of adsorption and its experimental applications, including the synthesis, characterization of materials, and adsorption tests. The results show that modified materials significantly improve hydrocarbon removal efficiency, especially at neutral pH. These findings highlight the potential of mesoporous materials in industrial wastewater treatment and open the door to further research on optimizing adsorption conditions, developing new adsorbents, and integrating these materials into large-scale industrial systems.
Production de l’hydrogène par électrolyse de l’eau
(2025) MOHAMMEDKRACHAI, Hanane; BENTOUIR, Narimen Fatima Zahra; Dr.REMLAOUI Ahmed
The Hydrogen is an energy carrier that is not directly available in nature, so it must be manufactured before it is stored and used. It is essentially obtained by reforming or gasification of hydrocarbons and electrolysis of water. The main objective of this work is to study the electrolysis of water and the production of hydrogen. Consequently, the experimental study gave good results. However, water alone gives very few hydrogen values in the electrolysis of water. The hydrogen could be considered as the fuel of the future.
PRODUCTION OF HYDROGEN
(2025) MIZHA Martin, Farai; Mr. NEHARI Driss
This study provides a systematic evaluation of hydrogen production methods, with focus on optimizing solar-powered alkaline electrolysis for sustainable energy systems. While analyzing conventional pathways (steam reforming, pyrolysis) and emerging alternatives (PEM/SOEC electrolysis), the research identifies alkaline electrolyzers as the most viable technology for large- scale solar hydrogen in high-irradiation regions like Algeria. Through MATLAB simulations validated by PVGIS data, we demonstrate how 80°C operation improves electrolyte conductivity (115.5 S/m) while managing overpotentials (total cell voltage: 2.24 V). Practical implementation challenges are addressed through: (1) sensitivity analysis of Faradaic/PV efficiencies, (2) comparative assessment of storage/transport methods, and (3) levelized cost modeling (€4.50/kg at optimized conditions). The work bridges theoretical principles with deployable solutions, offering actionable insights for renewable hydrogen projects in sun-rich developing economies.
Etude sur la production de marbre, granit et quartz artificiel
(2025) BOUROUIS, BOCHRA; CHADLI, DORIA; Dr M.MERABTENE
This Research focuses on the study of the production of artificial marble, granite, and quartz surfaces within the company SARL SOFCONTRA. It aims to understand the manufacturing processes, the raw materials used, and the factors influencing the quality of the final products. Special attention is given to the Breton Terastone system, which is widely used for the production of quartz-based composite surfaces. The study also includes physicochemical analysis of raw materials and final products using techniques such as Fourier-transform infrared spectroscopy (FTIR). The findings help better characterize the materials and provide recommendations to improve industrial performance and the quality of locally manufactured products.
Établissement de nettoyage, de désinfection et d'extermination d'insectes
(2025) Benbabouche, Hadjer; DR.NEHARI DRISS
Our work revolves around establishing an institution that provides cleaning, disinfection and insect extermination services. The “Dariclean” Foundation is considered an institution with a unique service nature, as this type of institution is considered to be rarely widespread in Algeria, as most of the institutions that provide similar services are located in the capital or major cities, and they are small and unknown institutions that provide limited services and in traditional ways. The first goal of the “Dariclean” Foundation is to promote the culture of reliance on cleaning companies. We also adopt the latest technologies and use modern technology. We have developed an electronic application that allows the customer to learn about our services, their quality, and the prices of each service through this application, and he can also choose the service he wants through This application without the hassle of moving to the institution’s headquarters. Our employees ensure that customers' needs are met and services are provided with the highest quality without any defects to provide more comfort and satisfaction to customers. We provide different and diverse services that are widely requested and accepted by the community.
Gestion des déviations dans l’analyse de la composition du GNL par chromatographie en phase gazeuse selon la norme ASTM D1945 : Application d’une carte de contrôle pour l’assurance qualité
(2025) ARMAS, Mérieme; Dr. CHOUAT Nadjat
This thesis focuses on the quality control of liquefied natural gas (LNG) composition analysis carried out at the GL3/Z complex of Sonatrach in Bethioua. The study specifically addresses the management of analytical deviations in the gas composition analysis using gas chromatography, according to the ASTM D1945 standard. The main objective is to implement a statistical process control approach. A reference gas was injected 30 times to establish baseline averages and standard deviations for each component. These values were then used to analyze 24 weekly injections, aimed at detecting any significant drift in the analytical system. The results showed good stability and repeatability, with measured concentrations remaining within acceptable limits. This work contributes to strengthening metrological control and supports a broader quality assurance strategy aligned with ISO/IEC 17025 requirements.
Study of Hydrocarbon Adsorption from Industrial Effluents Using Mesoporous Materials
(2025) SI ALI, Rihab; RAHMOUN, Imane; CHOUAT, Nadjat
This work focuses on the study of hydrocarbon adsorption from industrial effluents using mesoporous materials, particularly MCM-41 and its modified forms. These pollutants, which are often difficult to remove using conventional methods, pose a serious environmental threat. The study covers both the theoretical aspects of adsorption and its experimental applications, including the synthesis, characterization of materials, and adsorption tests. The results show that modified materials significantly improve hydrocarbon removal efficiency, especially at neutral pH. These findings highlight the potential of mesoporous materials in industrial wastewater treatment and open the door to further research on optimizing adsorption conditions, developing new adsorbents, and integrating these materials into large-scale industrial systems.
Investigation of Factors Influencing NOx Emissions in Gas Turbine Generators of a Natural Gas Liquefaction Facility
(2025) ELMEZOUAR, Abdel Rafik; ABDALLAH BERRABEH, Ben ali; CHOUAT, Nadjat
This thesis presents an experimental investigation into the factors influencing nitrogen oxide (NOx) emissions from Frame 6 gas turbines equipped with Dry Low NOx (DLN) systems within a natural gas liquefaction complex. These pollutants represent a major challenge for the energy industry, as their emissions can exceed regulatory limits even with advanced control technologies in place. The study combines a theoretical review of NOx formation mechanisms with a rigorous experimental campaign, utilizing in-situ gas analysis, fuel gas chromatography, and real-time operational data collection. The results demonstrate that fuel gas density and composition, particularly the levels of nitrogen and ethane, have a more decisive influence on NOx production than the fuel's overall calorific value. These findings underscore the need for a systemic, multi-parameter approach to emissions control and open pathways for developing advanced predictive models to optimize the environmental performance of industrial gas turbines.
Elimination d’un polluant organique à partir des déchets industriels
(2025) GUEZOUL, Meriem; SEGHIR, Amina; TABTI, Affaf
This study evaluates the efficiency of activated carbons derived from potato peels (CAEPT) and sweet potato peels (CAEPD) for the removal of two dyes: indigotine (CI), a food-grade dye, and acid violet 43 (AV), commonly found in cosmetic products. Dye concentrations were quantified using UV-Vis spectrophotometry, and the adsorption mechanisms were investigated through kinetic studies and thermodynamic isotherm models. The results demonstrated excellent dye removal performance. For an adsorbent mass of 100 mg, removal efficiencies reached 91.5% for CI and 99.52% for AV using CAEPT, and 84.14% for CI and 99.94% for AV using CAEPD. Adsorption data obtained with adsorbent masses of 50, 75, and 100 mg fit well with the Temkin isotherm model, indicating a favorable adsorption process. Additionally, the adsorption kinetics followed a pseudo-second-order model, suggesting that chemisorption is the rate-limiting step of the process.
Synthèse verte des nano-composites Sépiolite/ Palladium. Application à la dégradation du Bleu de méthylène
(2025) Driza, Merouane; Brahim, Aya; BOUSSALAM, Smail
In this thesis, sepiolite/palladium (Pd) nanocomposites were prepared using a green chemistry approach. In the first part, the nanoparticles (Pd) were synthesized in the presence of sepiolite in aqueous solution using a medicinal plant extract (henna). In the second part, the nanocomposites thus prepared were used as catalytic support for the purification of water loaded with cationic dye (methylene blue). The influence of different parameters such as mass, concentration, and intensity were studied. The experiment using Pd/Sep (3 mg, 10–5 mol/l, 120 min, 75 W lamp) clearly stands out for its high efficiency with the minimum amount of photocatalyst, thus demonstrating remarkable catalytic performance.
Elimination d’un polluant organique à partir des déchets industriels
(2025) GUEZOUL, Meriem; SEGHIR, Amina; TABTI, Affaf
This study evaluates the efficiency of activated carbons derived from potato peels (CAEPT) and sweet potato peels (CAEPD) for the removal of two dyes: indigotine (CI), a food-grade dye, and acid violet 43 (AV), commonly found in cosmetic products. Dye concentrations were quantified using UV-Vis spectrophotometry, and the adsorption mechanisms were investigated through kinetic studies and thermodynamic isotherm models. The results demonstrated excellent dye removal performance. For an adsorbent mass of 100 mg, removal efficiencies reached 91.5% for CI and 99.52% for AV using CAEPT, and 84.14% for CI and 99.94% for AV using CAEPD. Adsorption data obtained with adsorbent masses of 50, 75, and 100 mg fit well with the Temkin isotherm model, indicating a favorable adsorption process. Additionally, the adsorption kinetics followed a pseudo-second-order model, suggesting that chemisorption is the rate-limiting step of the process.
Elimination d’un médicament par un biosorbant naturel
(2025) BOUDJEMA, Kheira; FEKIH, Infel; TABTI, Affaf
The main objective of this work is to study the removal of two types of pollutants originating from commonly used pharmaceutical products: ferric iron, found in Seloferfol tablets, and the azo dye azorubine (E122), present in Salbutamol Saidal syrup. To achieve this, activated carbons were prepared from orange and lemon peels and used as natural adsorbents. The efficiency of these biomaterials was assessed through a series of experiments by varying several operational parameters such as pH, contact time, and adsorbent mass. The adsorption mechanisms were investigated by applying two kinetic models: pseudo-first-order and pseudo-second-order. The latter proved to be the most suitable for describing the experimental data, suggesting that the adsorption process is primarily governed by chemical interactions. Furthermore, the Langmuir, Freundlich, and Temkin isotherms were employed to model the adsorption equilibrium. The results demonstrated very high removal rates: up to 99.304% for ferric iron using lemon peel- based activated carbon, and 97.631% using orange peel-based carbon. As for azorubine, the removal efficiencies reached 94.25% with orange peel carbon and 93.388% with lemon peel carbon. These findings highlight the excellent adsorption capacity of both biomaterials, with a slight advantage for lemon peel carbon in the case of ferric iron, and orange peel carbon for azorubine.

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