Department of Material Sciences
Permanent URI for this communityhttps://dspace.univ-soukahras.dz/handle/123456789/14
Browse
8 results
Search Results
Item Adsorption of Benzoic and Salicylic Acids Using Sodium and Intercalated Bentonite in Aqueous Solution(American Scientific Publishers, 2016) Nadia Bensid; Yamina Berredjem; Zhour Hattab; Ridha Djellabi; Ouahida Khiereddine; FarhiHailaimia; Pierre Magri; Ahmed BoulmokhThe aim of this study was to apply a local betonite (Algeria) purified and intercalated with a surfactantnamely dodecyltrimethylammonium bromide (DTMAB) as an adsorbent to remove benzoic acid (BA) and salicylic (SA) which could be present in wastewaters. This intercalation process leads to improve the porous texture of materials that allows adsorbing efficiently organic compounds. The effect of various experimental parameters was investigated using a batch adsorption technique. The equilibrium adsorption data were well described by the Freundlich and Langmuir isotherms. The adsorption kinetics of both acids could be considered as pseudo-first order with internal diffusion.The capacity of DTMA–bentonite for Benzoic acid and Salicylic acid was found to be around 5 and 3.5 times respectively higher than that of Na–bentonite at 45 C. The thermodynamic study showed that the adsorption is not spontaneous and endothermic.Item Removal of Paranitrophenol by Adsorption on Intercalated Natural Clay(American Scientific Publishers, 2015-11-30) Ouahida Khireddine; Yamina Berredjem; Ridha Djellaibi; Nadia Bensid; A.E.K. Gheid; A. BourasThe present work aims to the valorization of locally available clay for water remediation. The used raw material is a clay soil from the region of Guelma (Algeria). Several physico-chemical treatments have been realized in order to obtain purified clay. The characterization of the sample clay, performed using XRD, FT-IR, DTA and SEM, showed its morphology and its texture. Furthermore, the results correlated to the structural analysis, demonstrated that this clay is a disordered kaolinite of type 1:1. The adsorption experiments of parnitrophenol (PNP) in aqueous medium have been carried out using the raw kaolinite and the urea-intercalated kaolinite. The results showed that thecapacity of PNP adsorption on the intercalated kaolinite is more important than that of raw material, where it is 11.06 mg·g−1 and 7.90 mg·g−1 for the urea-intercalated kaolinite and the raw kaolinite respectively. The evaluated experimental values of the adsorption isotherms are in agreement with Langmuir and Freundlich models. In all cases, the adsorption kinetics follows the mechanism of pseudo-second order. In addition, the thermodynamic study indicates that the adsorption of PNP on raw kaolinite and urea-intercalated kaolinite is a spontaneous process.Item Quality Assessment of Various Bottled Water Marketed in Algeria: Health-Related Effects(Annals of R.S.C.B., 2021-05-08) Wahiba Bencheikh*1, 2,3 and .4; Zhor Hattab; Yamina Berredjem; Louis J; LopesForty-two different brands between mineral & spring waters were purchased from varied markets in Algeria, they analyzed for their bacteriological quality & chemical major elements. The results showed that all the brands presented good bacteriological quality (Absence of E. coli, Total coliforms, Ps. aerugenosa, enterococci & anaerobic spores). Piper diagram shown that (76.19%) of the samples were classified as Earth Alkaline water, where (80%) of them belong to dominant 𝐻𝐶𝑂3−. By comparing the results with the WHO standards we found that only (16.67%) of the brands are compliant with the standards: Ain Bouglez, Righia, &Besbassa as spring waters, Texanna, El Goléa, Salsabil&Lalla Khadidja as mineral waters, those last two they have not enough TDS to consider them as mineral waters like mentioned in their labels, which confirmed by dendrogram classification. Otherwise, whenthe results comparewith the Algerian standards, all the brand waters turned to be compliant with them except for Arwa. Consumers must be very wary about the consumption of bottled water, especially if they already have health issues because they cannot make a choice only from the labels which are mostly different from the real chemical composition.Item Removal of methylene blue from water using eggshell membrane fixed bed(Desalination and Water Treatment, 2017-01-16) Radia Zerdoum; Zhour Hattab; Yamina Berredjem; Radia Mazouz; Ridha Djellabi; Naima Filali; Abdelhak Gheid; Kamel GuerfiThe purpose of this work was to remove methylene blue (MB) from water using natural eggshell membrane (ESM) in fixed-bed column. The ESM was treated and characterized by Fourier transform infrared spectra (FTIR), scanning electron microscope (SEM) and X-ray diffraction (XRD). A series of experiments were carried out to investigate the effects of bed height on breakthrough curve, flow rate, MB concentration, solution pH (2–10), the ionic strength and temperature on the adsorption behavior. The experimental results show that the adsorption capacity increases with the increase in the bed depth and MB concentration. However, it decreases with increasing the flow rate and temperature. The ESM adsorption capacity of MB is more pronounced in basic medium. The addition of NaCl salt ions decreases the fixation of MB on ESM. Five kinetic models, Bohart–Adams, Wolborska, Thomas, Yoon–Nelson and bed depth service time (BDST) models were applied to experimental data in order to predict the breakthrough curves using non-linear regression and to determine the characteristic parameters of the column useful for process design. The results showed that Thomas and Yoon–Nelson models were found suitable for the normal description of breakthrough curve at the experimental condition, while Adams–Bohart and Wolborska models were only for an initial part of dynamic behavior of the ESM column. Desorption of MB from ESM bed was performed with distilled water as the desorbing agent, and reuse study was investigated.Item Adsorption of hexavalent chromium by crushed brick: effect of operating parameters and modeling study(Desalination and Water Treatment, 2018-08-12) Assia Allaoui; Zhour Hattab; Radia Zerdoum; Yamina Berredjem; Ridha Djellabi; Wahiba Bessashia; Kamel GuerfiThe sorption of hexavalent chromium in aqueous solution using crushed Brick was carried out in batch mode. Powder of crushed Brick was prepared within a size between 500 and 800 μm. The crushed Brick was characterized by Fourier Transform infrared spectra (FTIR), BET surface area, X-ray fluorescence (XRF), Scanning Electron Microscopy (SEM),X-ray diffraction (XRD), Thermogravimetric analysis (TGA)and Zeta Potential. The results showed that the crushed Brick is a typical aluminosilicate mineral with SiO2/Al2O3 ratio of 3.65. On the other hand, it has a surface area of 20.11 m2 g−1 and exhibits a net microporosity with a medium pore width of 2.26 Å. Batch experiments were conducted to study the effect of different operating parameters such as contact time, pH, stirring speed, temperature, adsorbent dose and initial Cr(VI) concentration on the adsorption of Cr(VI) by crushed Brick. The results showed that the maximum adsorption capacity was 3.06 mg g−1 at pH 3, adsorbent dose of 20 g L−1 and initial Cr(VI) concentration of 10 mg L−1. Furthermore, the adsorption capacity increases in an acidic medium until it reaches pH 3 and afterwards it decreases due to the different speciation of hexavalent chromium with pH shifting. The equilibrium data were analyzed using three isotherm models such as Langmuir, Freundlich and Temkin by linear method. A satisfactory correlation coefficient value of the Langmuir isotherm demonstrates that the hexavalent chromium adsorption by crushed Brick is monolayer physical adsorption. The kinetic studies showed that the experimental data were best describing by pseudo- second-order model and intra-particle diffusion. It was observed from the values of thermodynamics parameters such as Gibbs free energy (ΔG°), enthalpy (ΔH°), and entropy (ΔS°), that the nature of adsorption is non-spontaneous, exothermic and reflects the decreased randomness at the solid/solution interface during the adsorption.Item Utilization of Powdered Eggshell Waste for Rhodamine B Removal: Evaluation of Adsorptive Efficiencies and Modeling Studies(American Scientific Publishers, 2018-02-03) Wahiba Bessashia; Zhour Hattab; Yamina Berredjem; Ridha Djellabi; Radia Zerdoum; Assia Allaoui; Abdelhak Gheid; Kamel GuerfiBiomass wastes are being recognized as emerging functional platforms that can be utilized in various fields. Eggshell, which can be found everywhere due to the large eggs consumption, has usually been regarded as waste and overlooked. In this contribution, we report the use of three powders prepared from eggshell waste such as Eggshell without membrane (ES), Eggshell membrane (ESM) and Eggshell with membrane (ESM-ES) as biosorbents for the removal of Rhodamine B (RhB) from water. Biosorbent powders were characterized by XRD, SEM, BET and FTIR. The effects of initial RhB concentration, temperature and pH on dye adsorption were performed. The results showed that the ESM, due to its 3D network porous structure, exhibited the highest adsorption efficiency than ES and ES-ESM. The RhB sorption on these adsorbents obeys pseudo-second-order kinetics which indicates a chemisorption process. For ESM adsorbent, the Freundlich isotherm model has a best-fit compared to Langmuir and Temkin isotherm models (multilayer dye adsorption with non-uniform distribution). However, for ES and ESM-ES adsorbents Langmuir has a best-fit than the other models (monolayer dye adsorption).Item Groundwater Quality Evaluation (Four boreholes from the region of Tebessa - Algeria)(Annals of R.S.C.B., 2021-12-15) Khedidja Touahria; Yamina Berredjem; Fethi Baali; Soraya Touahria; Samoun Fatah; Abdelhak GheidTebessa is located in the north-eastern of Algeria. It has a semi-arid climate with a water balance deficit. Groundwater is a significant source for drinking water supply and irrigation of agricultural land in many parts of this area. The water quality depends on the geological influence and anthropogenic pollution. Continuously increasing abstraction of groundwater resources to meet rising agricultural and domestic needs leads to a growing deficit of water. The intensive exploitation of the available water resources, coupled with periods of drought, has led to lowering of the water table and increasing the risk of degradation of water quality, especially when abstraction amounts greatly exceed the natural recharge of aquifers. The study of the physicochemical water quality of four boreholes of Tebessa shows that the waters studied are of the same hydro-chemical facies (calcium sulphate). The results of the physicochemical analyses are compared with national and international standards. In addition The Groundwater Quality Evaluation System (Groundwater - QES) is used to classify the waters studied depending on the quality and suitability for the production of drinking water.Item Removal of Basic Fuchsin from water by using mussel powdered eggshell membrane as novel bioadsorbent: Equilibrium, kinetics, and thermodynamic studies(Elsevier, 2020-04-08) Wahiba Bessashia; Yamina Berredjem; Zhour Hattab; Mohamed BououdinaThis study aims to remove organic cationic dye Basic Fuchsin (BF) by adsorption onto a low cost eggshell membrane (ESM) in batch mode at 293 K. XRD analysis confirms the amorphous nature of ESM meanwhile FTIR spectroscopy reveals the presence of several functional groups such as hydroxyl (–OH), sulfhydryl (–SH), carboxyl (–COOH), and amino (–NH2). Morphological observations by SEM indicate its fibrous microstructure. BET analysis shows a surface area of 11.56 m2 g−1 and the presence of mesopores with a volume of 6.173 10−3 cm3 g−1. The value of pHPZC of ESM is 7.05. The influence of adsorbent dose, contact time, pH, temperature and dye concentration is examined. The highest adsorption capacity around 48 mg.g−1is achieved for a dye concentration 250 ppm, pH 6 and 25 °C. In addition, adsorption has been found to follow pseudo-second order kinetics. The analysis of the experimental data using linear forms based on Langmuir, Freundlich and Temkin isotherm models indicate that the best fit is obtained with Freundlich model. Thermodynamic parameters (Gibbs free energy, enthalpy, and entropy) reveal that the adsorption of BF onto ESM is an exothermic and spontaneous process. A comprehensive mechanism for BF adsorption by ESM has been proposed.