Publications Scientifiques

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    Presence of Heavy Metals in Irrigation Water, Soils, Fruits, and Vegetables: Health Risk Assessment in Peri-Urban Boumerdes City, Algeria
    (Multidisciplinary Digital Publishing Institute (MDPI), 2024) Aksouh, Mohamed Younes; Boudieb, Naima; Benosmane, Nadjib; Moussaoui, Yacine; Michalski, Rajmund; Klyta, Justyna; Kończyk, Joanna
    This study investigates heavy metal contamination in soils, irrigation water, and agricultural produce (fruits: Vitis vinifera (grape), Cucumis melo var. saccharimus (melon), and Citrullus vulgaris. Schrade (watermelon); vegetables: Lycopersicum esculentum L. (tomato), Cucurbita pepo (zucchini), Daucus carota (carrot), Lactuca sativa (lettuce), Convolvulus Batatas (potato), and Capsicum annuum L. (green pepper)) in the Boumerdes region of Algeria. The concentrations of seven heavy metals (cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), nickel (Ni), lead (Pb), and zinc (Zn)) in soil and food samples were analyzed using atomic absorption spectrometry. Health risks associated with these metals were evaluated through the estimated daily intake (EDI), non-carcinogenic risks (using target hazard quotient (THQ), total target hazard quotient (TTHQ), and hazard index (HI)), and carcinogenic risks (cancer risk factor (CR)). Statistical analyses, including cluster analysis (CA) and Pearson correlation, were conducted to interpret the data. The results revealed the highest metal transfer as follows: Cd was most significantly transferred to tomatoes and watermelons; Cr to carrots; Cu to tomatoes; and Fe, Ni, Pb, and Zn to lettuce. Among fruits, the highest EDI values were for Zn (2.54·10−3 mg/day) and Cu (1.17·10−3 mg/day), with melons showing the highest Zn levels. For vegetables, the highest EDI values were for Fe (1.68·10−2 mg/day) and Zn (8.37·10−3 mg/day), with potatoes showing the highest Fe levels. Although all heavy metal concentrations were within the World Health Organization’s permissible limits, the HI and TTHQ values indicated potential health risks, particularly from vegetable consumption. These findings suggest the need for ongoing monitoring to ensure food safety and mitigate health risks associated with heavy metal contamination.
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    Removal efficiency of heavy metals, oily in water, total suspended solids, and chemical oxygen demand from industrial petroleum wastewater by modern green nanocomposite methods
    (Elsevier, 2023) Meneceur, Souhaila; Bouafia, Abderrhmane; Laouini, Salah Eddine; Mohammed, Hamdi Ali; Daoudi, Henda; Chami, Souheyla; Hasan, Gamil Gamal; Abdullah, Johar Amin Ahmed; Salmi, Chaima
    In the present work, we discuss the concern over heavy metals, such as As(III), Bi(II), Cd(II), Cr(VI), Mn(II), Mo(II), Ni(II), Pb(II), Sb(III), Se(-II), Zn(II), and the degradation of oil in water (OIW) saturated with hydrocarbons, total suspended solids (TSS), and chemical oxygen demand (COD) in petroleum wastewater, which pose a significant threat to aquatic and terrestrial life. To address this issue and preserve biodiversity, researchers conducted a study on the synthesis and characterization of ZnO@CuO nanocomposite (NC) using Mentha pulegium L leaf extract. The characterization techniques employed included UV-Vis spectrophotometry, FTIR spectroscopy, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Thermogravimetric Analysis (DSC–TGA), and Zeta potential. The results showed that the ZnO@CuO NC achieved 100% removal efficiency under optimal conditions. Furthermore, the kinetics of the removal process were well described by both the first and second-order kinetic models. The isotherm studies of heavy metals, OIW, TSS, and COD revealed that the adsorption process followed well the Langmuir isotherm model. Overall, this study highlights the potential of green-synthesized ZnO@CuO NPs as effective adsorbents for the remediation of heavy metals and pollutants in petrochemical wastewater.
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    Short-term laboratory adsorption of zinc and cadmium ions from aqueous solutions to ground canna indica roots
    (Springer Nature, 2023) Ghezali, Katia; Abdelwaheb, Mohamed; Nedeff, Valentin; Moşneguţu, Emilian Florin; Guettaf, N.; Bârsan, Narcis
    The current work presents the competitive removal of zinc (Zn) and cadmium (Cd) ions by adsorption using the roots of the Canna indica plant in order to study the metal-plant interactions at the microscopic scale that occur in constructed wetlands and phytoremediation processes. The sorption process was described in association with the data generated from Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). Kinetic variables and constants were calculated, optimized, and analyzed. The pseudo-second-order kinetic model provided the best fit to the experimental data and the sorption equilibrium was achieved in nearly 300 min. The equilibrium isotherms of zinc and cadmium were described using the nonlinear models of Langmuir, Freundlich, Sips, and their multi-component equivalents. The dimensionless separation factor (R L) showed that the adsorption system in this study is favorable. The Langmuir monolayer adsorption capacities were 71.20 and 298.6 μg g−1 for Zn2+ and Cd2+ respectively. The parameters of the metal adsorption isotherm fitted better to the extended Freundlich isotherm. This study reveals the association between surface properties and the biosorption capacity of heavy metals by plant roots on the one hand and the implication of the ion exchange mechanism through chemisorption on the uptake of Zn2+ and Cd2+ ions from aqueous solution by this adsorbent on the other hand.
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    Comparative study of biosorption of Cu+2, Ni+2, Cd+2, Zn+2 and Co+2 ions on the Pleurotus mutilus biomass
    (Université M'hamed Bougara de Boumerdès, 2018) Madani, A.; Selatnia, A.; Chergui, A.; Yeddou, A.R.; Nadjemi, B.
    In this study the biomass Pleurotus mutilus was used for the biosorption of Cu2+, Ni2+, Cd2+, Zn+2 and Co+2 ions. The effect of different parameters such as contact time, adsorbate concentration, pH of the medium and temperature were investigated. The sorption capacities were in the order of Cd2+ > Zn+2 > Co+2 >Cu2+ > Ni2+ . This order can be explained by their different values of affinities respectively. In order to prediction of the rate controlling step(external or internal mass transfer) , Boyd model was used in all case. Results showed that the external mass transfer is the rate controlling step. Different thermodynamic parameters such as enthalpy and entropy and change in standard free energy have also been evaluated and it has been found that the reaction was spontaneous and exothermic in nature. The Freundlich, Langmuir, Temkin and Dubinin-Raduskuvich adsorption models were used for the mathematical description of the biosorption equilibrium.
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    Copper, Zinc And Nickel’s Removal By Bentonite Clay: Case Study In Mono And Multicomponent Systems
    (Université M'Hamed Bougara Boumerdes, 2019) Hamdache, F.; Chergui, A.; Halet, Farid; Yeddou, A.R.
    The main purpose of this work is the Copper, Zinc and Nickel’s removal from mono and multi-metal ions aqueous solution using an Algerian bentonite without treatment. The bentonite is characterized using SEM, XRD and X-ray fluorescence. The effect of initial pH and contact time are studied. Under mono and multicomponent systems, the kinetic studies performed at pH 5, indicate that the adsorption follows a pseudo second order model. For both systems, the isotherm data are well correlated with Langmuir model. Whereas the maximum adsorption capacities follow the sequence’s order Cu > Zn > Ni. In the case of multicomponent system, the Cu(II), Zn(II) and Ni(II) adsorptions capacities (58.82, 19.53 and 6.56 mg/g) are lower than the obtained ones for the monocomponent system (58.48, 49.02 and 31.74 mg/g). In addition to that, a mutual competitive effect is observed. Zn(II) and Ni(II) ions adsorption is also inhibited by Cu(II) ions with no change in the maximum Cu(II) adsorption capacity.
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    Removal of hydrocarbons and heavy metals from petroleum water by modern green nanotechnology methods
    (2023) Bouafia, Abderrhmane; Meneceur, Souhaila; Chami, Souheyla; Laouini, Salah Eddine; Daoudi, Henda; Legmairi, Souheila; Menaa, Farid
    Considered heavy metals, such as As(III), Bi(II), Cd(II), Cr(VI), Mn(II), Mo(II), Ni(II), Pb(II), Sb(III), Se(-II), Zn(II), and contaminating chemical compounds (monocyclic aromatic hydrocarbons such as phenolic or polycyclic derivatives) in wastewater (petrochemical industries: oil and gas production plants) are currently a major concern in environmental toxicology due to their toxic efects on aquatic and terrestrial life. In order to maintain biodiversity, hydrosphere ecosystems, and people, it is crucial to remove these heavy metals and polluting chemical compounds from the watery environment. In this study, diferent Nanoparticles (α-Fe2O3, CuO, and ZnO) were synthesized by green synthesis method using Portulaca oleracea leaf extract and characterized by UV–Vis spectrophotometers, FTIR spectroscopy, X-Ray Difraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) techniques in order to investigate morphology, composition, and crystalline structure of NPs, these were then used as adsorbent for the removal of As(III), Bi(II), Cd(II), Cr(VI), Mn(II), Mo(II), Ni(II), Pb(II), Sb(III), Se(-II), and Zn(II) from wastewater, and removal efciencies of were obtained 100% under optimal conditions
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    Environmental Assessment and Compliance of Wastewater from Arzew Oil Refinery for Future Development and Reuse
    (2022) Ghezali, Katia; Ben Tahar, Nourredine; Otmanine, Ghazi; Guettaf, Naima
    To acquire baseline knowledge on the nature of effluent released into the environment from petroleum refineries in Algeria, and to find more interesting treatment options for industrial wastewaters, the characteristics of Arzew refinery effluent were investigated. Industrial wastewater samples were gathered from the influent, API separator, and discharged into the sea effluent, and then analyzed for different parameters using standard methods. The analysis showed high concentrations of total Suspended Solids (TSS), biological oxygen demand (BOD), chemical oxygen demand (COD), total petroleum hydrocarbons (TPH), and Oil and grease (O&G) contained in the influent wastewater, and reduced to acceptable limits in the discharged effluent based on the Algerian standards for industrial liquid effluents (including refineries). Heavy metals such as cadmium (Cd), copper (Cu), lead (Pb), iron (Fe), zinc (Zn), and total chromium (Cr) were also detected. The findings were compared with the liquid discharge standards of two other Algerian refineries regarding the regulation of liquid effluents from refineries. As a result of these investigations on the evaluation of wastewater treatment processes in the petroleum refinery sector in Algeria, suggestions are recommended for future research toward the development of advanced treatment technologies and the exploitation of recycling in petrochemical and refinery wastewater treatment plants.
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    Potential of canna indica in vertical flow constructed wetlands for Heavy Metals and nitrogen removal from Algiers refinery wastewater
    (MDPT, 2022) Ghezali, Katia; Bentahar, Nourredine; Barsan, Narcis; Eedeff, Valentin; Moșneguțu, Emilian
    Constructed wetlands (CWs) are important plant filters used for wastewater treatment. The behavior of the Canna indica-planted CWs in the face of a highly variable composition of industrial wastewater has yet to be understood. Here, we show the effectiveness of Canna indica-planted and unplanted vertical subsurface flow CWs for the treatment of Algiers petroleum refinery’s effluent. The selected species was placed in the CWs containing light expanded clay aggregate (LECA) and sand as a substrate. The findings indicate that the planted constructed wetlands efficiently removed 85% of total suspended solids (TSS), 96.38% of total nitrogen (TN), 96.15% of nitrate nitrogen (NO3−-N), 99.15% of ammonium nitrogen (NH4+-N), and 99.87% of nitrite nitrogen (NO2−-N). The overall mean removal efficiencies for heavy metals in the vegetated CWs were considerably greater than those of the control. Concentrations of Cr, Cu, Fe, Pb, Zn, Al, Ni, and Cd were calculated in the roots, rhizomes, leaves, and stems of the plant; then, the bioaccumulation factor (BAF) and translocation factor (TF) were determined. An initial examination using scanning electron microscopy (SEM–EDX) was also included in the study. The analysis indicated that toxic elements were adsorbed on plant tissues, concentrated in the roots, and partially transported to the aerial parts. These results are useful for the design of CWs to treat industrial wastewater, enabling water of acceptable quality to be discharged into the environment, especially as a low maintenance and cost-effective technology in developing countries.
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    PHYTO-PURIFICATION OF POLLUTED WATER BY USING POACEAE CASE OF LAKE REGHAIA
    (2019) BOUSSAID, KHADIDJA; CHEBOUTIMEZIOU, NADJIBA
    This work has two parts as a first part, we are interested in eliminating the heavy metals by two plants that belong to the family of Poaceae (Arundo donax and Phragmites australis). It is the treatment via planted filters. Secondly, the comparison has been made of the tolerance and accumulation by these two plants. A purification system is set up which consists of two vats: one located in height and the second in low to receive the water that flows from the first vat, in which were planted macrophytes. The results obtained, show a significant elimination of the heavy metals on the plants filter of Phragmites australis compared to Arundo donax after a stay of 30 days. The yields of eliminations are respectively 84.45% and 75.00% for Phragmites australis and Arundo donax. The results of this study also showed a significant reduction in COD, BOD5, Conductivity, Phosphate and Nitrate. The greatest accumulation of heavy metals is produced in the roots followed by leaves for both plants. The calculated values of biological transfer coefficient (BTC) and bioconcentration factor (BCF) showed that Phragmites australis and Arundo donax are effectively acting as species of phytoremediation for some heavy metals
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    Removal of heavy metal ions by adsorption onto activated carbon prepared from Stipa tenacissima leaves
    (Taylor & Francis, 2017) Madani, N.; Bouchenafa-Saib, N.; Mohammedi, O.; Varela-Gandíac, F.J.; Cazorla-Amorós, D.; Hamada, B.; Cherifi, Ouiza