hassan hannache
Université Hassan 2, Laboratoire d'Ingénierie et Matériaux, Faculty Member
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Li-ion batteries, the most efficient energy storage system are mainly composed of four components, including, the cathode, the anode, the electrolyte and the separator assembled in a sandwich structural cell. Their performances highly... more
Li-ion batteries, the most efficient energy storage system are mainly composed of four components, including, the cathode, the anode, the electrolyte and the separator assembled in a sandwich structural cell. Their performances highly depend on the chemical composition, the crystal structure and the morphology of the electrode materials. To satisfy the ever-growing requirements of renewable and grid storage applications, looking for new efficient and cost-effective electrodes is required. As one of the pivotal components of LIBs, many research groups have been working on the development of new anode materials. In this perspective, our conducted work aims to the elaboration of metal oxides as a high capacity anode material for LIBs. CoFe2O4 spherical-like nanoparticles with a specific surface area of 53.16 m2g-1 were prepared by a bio-inspired synthesis method. Evaluated as anode material for LIBs, the prepared electrode displays remarkable cycling performance and good rate capability (976 mAh g-1 at 178 mA g-1 and 570 mAh g-1 at 1793 mA g-1). The lithiation/delithiation mechanism has been investigated via Ex-situ Mössbauer spectroscopy and In-Situ XRD techniques
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To meet the increasing energy demand for electric vehicles, renewable and grid storage systems, the design and the manufactory of new electrode materials is crucial. Recently, huge efforts have been oriented to the development of high... more
To meet the increasing energy demand for electric vehicles, renewable and grid storage systems, the design and the manufactory of new electrode materials is crucial. Recently, huge efforts have been oriented to the development of high capacity anode material as one of the important components for next-generation lithium-ion batteries. Compared to graphite which dominates the LIBs anode market, nanostructured metal oxides have demonstrated promising properties such as higher specific capacities and lower working potential, and hence can be regarded as tempting candidates for the long term application [1]. In this work, cobalt ferrite oxide CoFe2O4 has been prepared by the alginate gelling method. The face-centered cubic spinel structure and the spherical morphology of the produced material were confirmed using XRD, Raman spectroscopy, and SEM techniques. As anode material for LIBs, the material exhibits good cycling and multi-rate capability performances (976 mAh g-1 at C/5 and 570 mAh g-1 at 2C). To go further and to understand the lithiation/delithiation mechanism in-situ XRD and Ex-situ Mössbauer spectroscopy techniques have been performed. Reference [1] K. Cao, T. Jin, Y. Li and L. Jiao, "Recent progress on conversion reaction metal oxide anodes for Li-ion batteries", Materials chemistry Frontiers, vol. 1, pp. 2213-2242 (2017
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Abstract Porous ceramics were prepared by a solid state process from a mixture of clay and 20 wt% banana peels (BPs). BPs were used as an eco-friendly pore-forming agent. Compacted pellets of the dry mixture were calcined at three... more
Abstract Porous ceramics were prepared by a solid state process from a mixture of clay and 20 wt% banana peels (BPs). BPs were used as an eco-friendly pore-forming agent. Compacted pellets of the dry mixture were calcined at three sintering temperatures, 900, 1000, and 1100 °C, for 2 h. The effect of sintering temperature on the ceramic properties, such as apparent porosity and mechanical strength, was examined, and an increase in the sintering temperature from 900 to 1100 °C yielded porous ceramics with decreased porosity and increased mechanical strength. To obtain porous ceramics (40.2 vol% porosity) with sufficient indirect tensile strength (8 MPa), the optimum sintering temperature was determined to be 1100 °C.
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Research Interests: Materials Science, BIOCHAR, Pyrolysis, Cellulose, Nanofiber, and 3 moreCoating, Fertilizer, and Phosphate
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The focus of this study is the development of innovative and sustainable geopolymer composites with improved elevated temperatures performances. To minimize production related costs and support a circular economy model, phosphate sludge... more
The focus of this study is the development of innovative and sustainable geopolymer composites with improved elevated temperatures performances. To minimize production related costs and support a circular economy model, phosphate sludge and MK are chosen as precursors for alkaline activation, and glass fibers as reinforcement material. The geopolymer composites were prepared by incorporating glass fibers in a geopolymer matrix based on a mixture of metakaolin and PS in a ratio of 50% and with amounts ranging from 0.25% to 1% of fibers. The developed composites were assessed in terms of physical characteristics, microstructural properties and flexural strength prior to and after introduction to higher temperatures. The findings demonstrated that PS based geopolymer matrix flexural strength decreased in the region of temperature between 25 and 600 °C, but increased progressively at higher temperatures, achieving a gain of 3.2% at 1000 °C. The same trend was followed after glass fiber incorporation, leading to a more significant gain of about 16.5% with a 1% fiber content up to 1000 °C. This behavior was assigned to the decomposition of carbonate content of PS at 600 °C as well as to the crystallization of the geopolymer matrix at higher temperatures.
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Abstract In the attempt to develop a novel coated fertilizer with combined slow release and water retention properties, all-cellulose hydrogel formulation was applied as waterborne and swellable coating material of monoammonium phosphate... more
Abstract In the attempt to develop a novel coated fertilizer with combined slow release and water retention properties, all-cellulose hydrogel formulation was applied as waterborne and swellable coating material of monoammonium phosphate fertilizer (MAP). The biodegradable formulation was prepared from sodium carboxymethyl cellulose/hydroxyethyl cellulose blend filled with 5% of spherical regenerated cellulose particles (CH@5RC). The coating process was performed in rotating pan and final coated products with two coating thicknesses and two crosslinking conditions were elaborated. A uniformly covered surface with increased crushing resistance up to 90.55 N and a positive impact on the soil water retention capacity were obtained after coating. Furthermore, the release experiment of phosphorus and nitrogen in water and soil media showed extended-release durations with maximal longevities of 12 h in water and 19–20 days in soil as compared to 1–2 h in water and 9–10 days in soil of uncoated MAP. The effect of the coating thickness and crosslinking condition on all investigated properties was taken into account. We assume in this work that cellulosic materials, being the main coating former of fertilizer, are capable to double the release time of MAP fertilizer with better preservation of the soil moisture.
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The new adsorbent was prepared from the Moroccan oil shale of Timahdit (layer Y) by a chemical activation with sulfuric acid H2SO4 for the removal of Pb (II) from dilute aqueous solution. The effect of experimental parameters such as pH... more
The new adsorbent was prepared from the Moroccan oil shale of Timahdit (layer Y) by a chemical activation with sulfuric acid H2SO4 for the removal of Pb (II) from dilute aqueous solution. The effect of experimental parameters such as pH and contact time on the adsorption was studied. The obtained data were fitted with the Langmuir and Freundlich equations to describe the equilibrium isotherms. The characteristic parameters for each isotherm have been determined. It was found that pH played a major role in the adsorption process. The maximum adsorption capacity for Pb (II) on Moroccan oil shale of Timahdit calculated from Langmuir isotherm was more than 84.7 mg g-1. The optimum pH range for the removal of Pb (II) was 2.30-7.88. The Langmuir isotherm model was found to best describe the experimental data.
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Abstract In the present work, the effect of solvent on the sub and supercritical extraction of the organic matter from Tarfaya's oil shales was studied. The experimental results revealed that the extraction yield obtained by the... more
Abstract In the present work, the effect of solvent on the sub and supercritical extraction of the organic matter from Tarfaya's oil shales was studied. The experimental results revealed that the extraction yield obtained by the phenol is very high compared to that obtained by the toluene or without solvent. In addition, the solvent had a significant effect on the yield and the composition of the obtained oil. The analyses carried out on the recovered oils allowed us to establish that the phenol is a very efficient solvent for oil shale extraction, giving a better quality of the oils extracted containing a large proportion of maltenes and aromatics compounds and fewer amounts of sulphur and paraffin compounds.
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Functionalized alkenes were successfully synthesized via a clean procedure in a short time by using a new recycled heterogeneous catalyst prepared from Moroccan oil shale, this catalyst is characterized by different technics such XRD,... more
Functionalized alkenes were successfully synthesized via a clean procedure in a short time by using a new recycled heterogeneous catalyst prepared from Moroccan oil shale, this catalyst is characterized by different technics such XRD, BET-BJH, MEB-EDS, and TGA, before it’s has been used in the Knoevenagel condensation between different aldehydes and active methylenes. The results showed that coupling the catalyst with ultrasound irradiations could improve the catalytic system in this transformation by achieving the products in a very short time, the results showed clearly that this catalyst could be considered as excellent recyclable support in Knoevenagel condensation.
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This study focuses on investigating the effect of various solvents on the supercritical extraction of organic matter from Moroccan oil shales, with the goal of determining the optimal operating conditions that result in a high yield of... more
This study focuses on investigating the effect of various solvents on the supercritical extraction of organic matter from Moroccan oil shales, with the goal of determining the optimal operating conditions that result in a high yield of high-quality oil rich in aromatic compounds. The results of this study demonstrate that the extraction yield and quality of the extracted oil heavily depend on the chosen operating conditions for supercritical or subcritical extraction of organic matter from oil shale. Additionally, the study found that phenol can effectively degrade oil shale and enable extraction of nearly all the organic matter, even under mild conditions (T = 390°C, P = 1.2 MPa, Time = 2.5 h. Furthermore, the oils obtained through this extraction process are of high quality, with a rich content of maltenes, and a higher concentration of aromatic compounds and lower levels of sulfur than those obtained using other solvents.
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This study focused on the production and characterization of phosphate glass fibers (PGF) for application as composite reinforcement. Phosphate glasses belonging to the system 52P2O524CaO13MgO (11-(X + Y)) K2OXFe2O3YTiO2 (X:1, 3, 5) and... more
This study focused on the production and characterization of phosphate glass fibers (PGF) for application as composite reinforcement. Phosphate glasses belonging to the system 52P2O524CaO13MgO (11-(X + Y)) K2OXFe2O3YTiO2 (X:1, 3, 5) and (Y:0.5, 1) were elaborated and converted to phosphate glass fibers. First, their mechanical properties and chemical durability were investigated. Then, the optimized PGF compositions were used afterward as reinforcement for thermosetting composite materials. Polyester matrices reinforced with short phosphate glass fibers (sPGF) up to 20 wt % were manufactured by the contact molding process. The mechanical and morphological properties of different sPGF-reinforced polyester systems were evaluated. The choice between the different phosphate-based glass syntheses (PGFs) was determined by their superior mechanical performance, their interesting chemical durability, and their high level of dispersion in the polyester matrix without any ad sizing as proven ...
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The present work aims to investigate the conditions for improving the containment of spent ion exchange resin (IER) as a radioactive waste, using powdered Callovo-Oxfordian clay (COx) as an addition to the cementitious matrix at different... more
The present work aims to investigate the conditions for improving the containment of spent ion exchange resin (IER) as a radioactive waste, using powdered Callovo-Oxfordian clay (COx) as an addition to the cementitious matrix at different rates. The aim of this work was to investigate the influence of COx on the characteristics of cemented packages of spent (REI). In this context, a cemented pack was made using Portland class 45 cement, sand, resin and water. And others are prepared by replacing the sand with COx, in the following proportions: (2%, 4%, 6%, 8% and 10%). The packages obtained with and without COx were measured for their compressive strength and porosity.
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In order to optimize the formulation of the conditioning matrix of the Ion Exchange Resins (IER) (MBD-15), considered as radioactive waste generated by the TRIGA MARK II nuclear reactor of the CENM, we carried out several tests by fixing... more
In order to optimize the formulation of the conditioning matrix of the Ion Exchange Resins (IER) (MBD-15), considered as radioactive waste generated by the TRIGA MARK II nuclear reactor of the CENM, we carried out several tests by fixing the percentage of cement and by modifying the percentages of the resins to be confined (0 - 14%) and that of water. On the other hand, we performed another test to illustrate the role of an aggregate such as sand, in the cement matrix. The measured response of all the tests carried out is evaluated by the compressive strength of the matrix, after a time of 7, 14 and 28 days of confinement. The results obtained show that the maximum amount of IER that can be incorporated into a formulation without the package losing its strength is 12%. The addition of an aggregate (sand) in the cement matrix increases its compressive strength.
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The management of organic wastes (organic solids and effluents) is one of the indispensable ways to ensure sustainable development for emerging and developing countries such as Morocco. It represents real financial and environmental... more
The management of organic wastes (organic solids and effluents) is one of the indispensable ways to ensure sustainable development for emerging and developing countries such as Morocco. It represents real financial and environmental challenges, due to the increasing cost of wastes’ treatment and the pollution risks of groundwater and soil, owing to their unstable states. Nevertheless, it is necessary to identify biomass/waste sources and to define the most efficient valorization processes based on their compositions and physicochemical properties. Statistics show that the amount of organic wastes is continuously increasing as a result of population growth, changes in production, and consumption patterns. At this stage, the recycling and energy recovery of abundant organic waste presents an effective solution to control the increasing energy consumption, while minimizing the environmental footprint (GHG, water and soil pollution, global warming, etc.) and providing not only new energ...
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The aim of this work is to prepare and characterize activated carbons with good properties at lower cost from molasses, obtained as byproducts of the sugar industry. The samples were prepared by chemical activation with phosphoric acid (H... more
The aim of this work is to prepare and characterize activated carbons with good properties at lower cost from molasses, obtained as byproducts of the sugar industry. The samples were prepared by chemical activation with phosphoric acid (H 3 PO 4 ). Their structural and textural characterization was effected by FT-IR, specific surface area, SEM, as well as functional group determination. The results showed that the H 3 PO 4 /molasses ratio, the activation temperature and the surrounding atmosphere affected the properties of the final activated carbons. The best product was obtained with a H 3 PO 4 /molasses ratio of 1.75 at 500°C in air. It presented a specific surface area of 1470 m 2 /g, a maximum adsorption capacity for methylene blue of 600 mg/g (Langmuir model) and an important quantity of surface functional groups. The study revealed that molasses, a by-product of food industry, could be used as raw material for the preparation of activated carbon under mild conditions and with...
The objective of this study is the valorization of a sub-product of the fruit of the argan tree; it is the shell of argan nuts which represents about 50% of fresh fruit. It is a natural lino-cellulosic residue that we cou ld turn into... more
The objective of this study is the valorization of a sub-product of the fruit of the argan tree; it is the shell of argan nuts which represents about 50% of fresh fruit. It is a natural lino-cellulosic residue that we cou ld turn into charcoal under the effect of chemical activation wi th phosphoric acid which allows the development of a large pore in the activated material. We studied the effect of the activation temperature, activation time and th e amount of acid added to the char yield and the adsorption capacity of the material developed in response to the exper imental determination of the kinetics of adsorption of an o rganic molecule: the methylene blue. The results sh owed that the temperature of 400 °C, the processing time of one h our and the mass ratio (precursor/phosphoric acid) equal to one, are optimal conditions for development of the adsorbent material. The product obtained under thes e conditions has good textural and structural properties; a spec ific surface area...
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In the biotechnology field, nanoparticles with a strong magnetic moment can bring attractive and novel potentialities. They are detectable, manipulable, stimulable by a magnetic field and they could be applied as nano-tracers for medical... more
In the biotechnology field, nanoparticles with a strong magnetic moment can bring attractive and novel potentialities. They are detectable, manipulable, stimulable by a magnetic field and they could be applied as nano-tracers for medical imaging and nano-vectors for transporting therapeutic agents to a target. For our part, we applied Fe3O4 nanoparticles to immobilize bacteria of Moroccan strains in order to develop bacterial bioreactor. For this aim, we got through the synthesis and characterization of magnetite Fe3O4 nanoparticles by co-precipitation in basic medium. The obtained nanoparticles were encapsulated in silica by sol-gel process. The results of this step allowed us to use Fe3O4@SiO2 nanoparticles to immobilize Bacillus licheniformis by adsorption and separate it magnetically. The principle of this system gives us the opportunity to develop a bacterial bioreactor for industrial applications.
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Die Abscheidung von BN aus gasförmigen BCl3‐NH3‐H2‐ (I), BCl3‐NH3‐ (II) und BF3 ‐ NH3‐Gemischen (III) wird aus thermodynamischer Sicht untersucht.
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ABSTRACT The performance of three techniques, conventional maceration at room temperature, infusion and microwave assisted extraction, was evaluated to extract polyphenols, condensed and hydrolysable tannins from Moroccan barks of Acacia... more
ABSTRACT The performance of three techniques, conventional maceration at room temperature, infusion and microwave assisted extraction, was evaluated to extract polyphenols, condensed and hydrolysable tannins from Moroccan barks of Acacia mollissima. A comparison of these methods was performed using colorimetric assays. For each technique, the effect of extraction conditions on the yield extracts was evaluated. The variables studied are: solvent nature, barks ages, time extraction, power extraction and heat interaction with solvent nature and barks ages. This study proved that the choice of solvent extraction was a relation of the extraction method used and the extractible nature (polyphenols, condensed or hydrolysable tannins). Methanol was the best solvent to extract tannin and polyphenols using maceration at room temperature, and ethanol was the best for infusion at 60 °C. Microwave was more selective to extract polyphenols and tannins under extraction solvent used. Highest polyphenols contents was obtained using methanol. For condensed and hydrolysable tannins, the highest were obtained using water. The polyphenols contents extracted using maceration was closed to the yield obtained with microwave, 354 mg GAE/g bark, 442 mg GAE/g bark, respectively. This study proved the pertinence of traditional methods to extract polyphenols and tannins compared to the new extraction method (microwave). The best polyphenols yields, condensed and hydrolysable tannins were obtained by microwave followed by the yield obtained by maceration and finally the yield obtained by infusion.
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Research Interests: Chemistry and Adsorption
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This study records experiments undertaken to determine the suitable conditions for the use of the oil shale of Timahdit, as an adsorbent for water treatment. A simple process was proposed based on chemical activation. The preparation has... more
This study records experiments undertaken to determine the suitable conditions for the use of the oil shale of Timahdit, as an adsorbent for water treatment. A simple process was proposed based on chemical activation. The preparation has been carried out by carbonization after impregnation of the precursor with phosphoric acid. The effect of different conditions of preparation on the specific surface area is discussed. These parameters are H3PO4/shale weight ratio, carbonization temperature, carbonization time and concentration of H3PO4. The properties and surface structure of the adsorbent were investigated by XPS and FT-IR. Their total surface acidity and basicity were also determined. The retention process of methylene blue (MB) by adsorbents has been studied. It was found that MHP2 and MHP7 have relatively high retention ability as compared to activated carbons.
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Activated carbon was prepared from molasses, which are natural precursors of vegetable origin resulting from the sugar industry. A simple elaboration process, based on chemical activation with phosphoric acid, was proposed. The final... more
Activated carbon was prepared from molasses, which are natural precursors of vegetable origin resulting from the sugar industry. A simple elaboration process, based on chemical activation with phosphoric acid, was proposed. The final product, prepared by activation of molasses/phosphoric acid mixture in air at 500°C, presented high surface area (more than 1400 m2/g) and important maximum adsorption capacity for methylene blue (625 mg/g) and iodine (1660 mg/g). The activated carbon (MP2(500)) showed a good potential for the adsorption of Cr(VI), Cu(II) and Pb(II) from aqueous solutions. The affinity for the three ions was observed in the following order Cu2+ Cr6+ Pb2+. The process is governed by monolayer adsorption following the Langmuir model, with a correlation coefficient close to unity.
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Abstract A geopolymeric material (referred as G0) was synthesized by reacting a silicate alkaline solution (mixture of sodium and potassium hydroxides with sodium silicate) with metakaolin. Various formulations (GC1 to GC12) have been... more
Abstract A geopolymeric material (referred as G0) was synthesized by reacting a silicate alkaline solution (mixture of sodium and potassium hydroxides with sodium silicate) with metakaolin. Various formulations (GC1 to GC12) have been synthesized by partially replacing kaolin with different contents of calcium carbonate. The thermal conductivity was evaluated from the density, specific heat capacity at constant pressure and thermal diffusivity (by flash method). The results revealed that these geopolymer formulations exhibit a good thermal stability at low temperature. In addition, the thermal conductivity increases when the test temperature is increased. Addition of calcite up to 12 wt% did not alter the thermal conductivity. The designed materials exhibit good combination of mechanical properties as well. In addition, the thermal performance of the developed material incorporated in an external wall and exposed to the real climatic conditions, was investigated. It was found that the wall made with developed geopolymer ensures a good reduction of surface temperature and heat flux as well as the heating and cooling demand compared to a wall without geopolymer.
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This work aimed to implement a screening experiment, to study the effects of different processing and formulation factors on the elimination of carbonates from Moroccan oil shale employing Plackett?Burman screening design. Different... more
This work aimed to implement a screening experiment, to study the effects of different processing and formulation factors on the elimination of carbonates from Moroccan oil shale employing Plackett?Burman screening design. Different factors were proposed for study, such as temperature (?C), concentration (mol/l), ratio (s/l), processing time (h), mean particle size (mm), type of acid (CH3COOH, HCl), origin of row material (Tarfaya, Timahdit) and agitation (Yes, No). The quantity of carbonates eliminated was chosen as a response. The results revealed that concentration, ratio, processing time, mean particle size, type of acid and the origin of row material (Tarfaya, Timahdit), showed a significant effect on the quantity of carbonates eliminated, while the temperature and agitation had no effect. The predicted values were in agreement with the experimental values with a coefficient of determination (R2) of 0.99. The model has been validated by experiments subsequent to optimized condi...
and heavy metals reaches the aqueous sources and changes the water quality i.e. made inappropriate for drinking as well as commercial usage purpose(Asfaram et al., 2015; Tounsadi et al., 2016). Among the processes for the treatment of... more
and heavy metals reaches the aqueous sources and changes the water quality i.e. made inappropriate for drinking as well as commercial usage purpose(Asfaram et al., 2015; Tounsadi et al., 2016). Among the processes for the treatment of liquid discharges, adsorption remains a relatively used technique and easy to implement. Activated carbon is the most widely used adsorbent because of its high adsorption capacity. However, this adsorbent has a high cost and remains difficult to regenerate(Agarwal et al., 2016; Asfaram et al., 2015; Sahu et al., 2010). The search for another effective and less expensive adsorb is therefore interesting. Several studies have been carried out on the investigation of new precursor less expensive and do not use the forest reserves, such as peat, chitin(Ghorbel-Bellaaj et al., 2011), silica(Givianrad et al., 2013), sawdust(Johannes et al., 2013), bagasse pith and fly ash(Esfandiar et al., 2014; Reinik et al., 2015). From this point of view, the use of bitumi...