Publications Nationales
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Item Comparative LCA between conventional luminaires and a LED luminaire with a prediction on optimisation of environmental impacts(ALJEST, 2022) Benali, Ali; Louhab, K.; Aksas, H.; Boughrara, S.Excessive usage of public lighting systems creates considerable environmental impacts. Impacts before using public lighting, such as carbon dioxide emissions and the depletion of resources, are essentially due to the production of electric energy that is necessary for power supply, as well as transportation and distribution. The manufacture of the components of a public lighting system also constitutes a life cycle, which creates emissions that have significant impacts on the environment. After the use of a public lighting system, the strain regarding the management of end-of-life waste of light fixtures arises. Waste such as glass, plastics, metallic waste, as well as lamps of which certain types contain mercury, sodium, and other substances that are more or less harmful. In addition to the impacts mentioned above, the direct fallouts of exploiting lighting fixtures impact fauna and flora species as well as human health under the effect of artificial light emitted throughout the night. The present articles aims, according to the approach during the life cycle assessment (LCA), to identify which of the existing technologies can make public lighting a factor of comfort, security, wellbeing on one hand, and offer optimal performances on the environmental, energetic, and economic aspects, thus reducing the risks threatening biodiversity and the equilibrium of ecosystems. The retained solution must converge towards an “echo-lighting” as well as towards a “smart lighting” which would answer major worries linked to the deployment and irrational use of conventional public lighting, which is energy-intensive and a generator of potential environmental damages. Smart Lighting consists of guaranteeing a dynamic operation of lights through emerging technologies, which would ensure a supply of artificial light based on the existing natural light, with the possibility of taking into account the presence of users (vehicle, pedestrian, etc) or the lack thereof, as well as the automatic adaptation of light intensity to normative demand and needs.Item Etude du potentiel d’utilisation des déchets agroalimentaires, les grignons d’olives et les noyaux de date pour récupération et adsorption des métaux lourds(Université M'Hamed Bougara Boumerdes, 2015) Babakhouya, N.; Boughrara, S.; Abed, F.; Abai, N.; Midoune, S.La présente étude porte sur l’application d’un adsorbant naturel préparé à base de grignon d’olives et de noyaux de dattes à différents pourcentages dans le domaine de traitement des effluents liquides industriels. Dans notre travail nous nous sommes intéressés à son application pour le cadmium (métal lourd). L’effet de plusieurs paramètres tel que le temps de contact, la concentration initiale en ions de cadmium, et le pH de la solution a été étudié en système en batch. Une modélisation des isothermes d’adsorption a été effectuée à l’aide des models d’isothermes de Langmuir, Freundlich et Temkin et leur coefficient de corrélation obtenus, indiquent que le model de Langmuir est favorable pour la plupart des proportions d’adsorbantsItem Efficacité des Argiles à Piliers d’oxydes d’Aluminium et de Fer pour l’élimination du Cu (II) à partir des Solutions Aqueuses(University of M’HAMED Bougara Boumerdes, 2015) Cherifi-Naci, H.; Boughrara, S.; Louhab, K.Pillared Clays with polycations of Aluminum and Iron have been synthesized from natural bentonite using the solutions of Al (NO3)3.9H2O and Fe (NO3) 3.9H2O as pillaring agents. The resulting pillared clays have been characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF) and by infrared spectroscopy (FTIR) .The d-spacing of pillared clays of Aluminum and Iron is 20.25 A° and 30.23 A°, respectively. The specific surface area of the clay pillars of aluminum and iron is 290 and 360 m2 /g, respectively. The kinetic study of the adsorption of copper on the modified clays showed that equilibrium is reached after 60 min. A high adsorption performance was recorded for the following optimal conditions: at the temperature T = 25 ° C, the solid / liquid ratio = 2, the initial concentration of the ion Cu 2+ = 40 mg/l, the amount of adsorbent clay = 800 mg and pH = 6Item Modeling of adsorption isotherms of methylene blue by olive stones(Aljest, 2015) Abed, F.; Babakhouya, N.; Boughrara, S.The present study focuses on the recovery of the waste food « the olive stones » in the field of industrial liquid effluent treatment. The material is used in its native form. In order to test the performances of the adsorbent we were interested in cationic dye the methylene blue considered as pollutant. The effects of several parameters such as contact times, initial concentration of dye, solution and pH were studied in batch system. Modeling of experimental results was performed using models of Langmuir and Freundlich isotherms, which show that adsorption follows the Langmuir model with high correlation coefficients