Publications Nationales
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Item Evaluation of trace metals in sewage sludge from a wastewater treatment plant with perspective of valorisation(University of M’HAMED Bougara Boumerdes, 2015) Benoudjit, F.; Hachemi, M.The increasing quantities of sewage sludge from wastewater treatment plants are a great source of worry especially concerning their impact on the environment. Managing such sludge is the basis for a successful general sanitation scheme. The present work subject matter is the evaluation of pollutants present in the sewage sludge recovered from urban wastewater treatment plant of the town of Boumerdès, Algeria, which is treated wastewater from three (03) towns: Boumerdes – Corso – Tidjelabine. For this study, we followed the evolution of some physical and chemical parameters such as the concentration of trace metals which we have analysed mineralogically through the use of X-ray fluorescence and then compared to the French standard NF U 44-041. The NF U 44-041 standard concerns the reuse of sewage sludge as fertilizer in land application. Several sewage sludge samples have been analysed in the present work. The analysis of the sewage sludge physical properties has revealed a low percentage of dry matter (total solids) and a high percentage of organic matter. The chemical characterization of the sludge helped to evaluate their pH and polluting power. Overall the pH level of the sludge was approaching neutrality and their concentration in trace metals was below the thresholds defined by the NF U 44-041 standard. Thus, municipal sewage sludge does not represent any danger to the environment that thus can safely be used in agricultureItem Preparation and Characterisation of adsorbent prepared from sewage sludge for removal of methylene blue(ALJEST, 2020) Djoumad, Sonia; Benrachedi, K.; Ladji, H.The objective of this study is to valorize an urban waste, the sludges from the wastewater treatment plant of Boumerdes/Algeria for the removal of methylene blue dye in aqueous solution by adsorption. The material made from this sludge has been characterized by various techniques: X-ray fluorescence microscopy (XRF), X- ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) to obtain information concerning their structures and their compositions.A systematic study of various parameters such as: effect of adsorbent dosage, contact time and initial dye concentration was carried out in order to optimize the ideal conditions for a good adsorption of the studied pollutant; especially the kinetics of adsorption.The exploitation of experimental results using different kinetic models and adsorption isotherms showed that the sludge has similar adsorption characteristics to those of activated carbon, which perfectly confirms the applicability of the activated sludge in the wastewater treatment.Item Evaluation of trace metals in sewage sludge from a wastewater treatment plant with perspective of valorization(University M'hamed Bougara Boumerdes, 2015) Benoudjit, Fouzia; Hachemi, M.The increasing quantities of sewage suldge from wastewater treatment plants (WWTP) is a great source of worry especially concerning their impact on the environnment. Managing such sludge is the basis for a successful general sanitation scheme. The present work subject matte ris the evaluation of pollutants present in the sewage sludge(SS) recovered from urban wastewater treatment plant of the town of Boumerdes wich is treated wastewater from three(03) towns : Boumerdes- Corso- Tidjelabine, Algeria