Mohamed Saidi

• Abdelmalek Essaâdi University

Activated carbon (AC) materials were synthesized from argan press cake (APC), leveraging its unique structure and composition, which makes it an ideal precursor for activated carbon production. The synthesis involved initial carbonization of raw APC, followed by activation with potassium hydroxide (KOH) using a 1:1 KOH weight ratio. This study syst...

Carbonating metallurgical slags plays a pivotal role in achieving efficient mineral CO 2 sequestration and waste valorization. This research introduces a novel integrated approach that combines the carbonation of Ladle Furnace Slag (LFS) with the simultaneous degradation of Methyl Orange (MO) in synthetic water. The comprehensive characterization o...

This study addresses the critical need to reduce energy penalties in CO2 capture processes by exploring the potential of activated carbons derived from argan paste cake for post-combustion CO2 capture applications. Leveraging their cost-effectiveness, stability in humid conditions, and microporous structure, a series of activated carbons with diver...

The sillenite-structured bismuth titanate (Bi12TiO20) is thought to be a viable photocatalyst for environmental remediation. However, the performance of Bi12TiO20 as a photocatalyst is severely constrained by its limited range of light sensitivity and the rapid photoinduced electron-hole pair recombination. A practical and effective way to overcome...

Removal of Amoxicillin from an Aqueous Solution by Activated Carbon Prepared from Biomass

This study focuses on the preparation and characterization of activated carbon derived from Ar-gan paste cake through carbonization at 300 °C followed by activation at 800 °C , utilizing KOH as the activation agent with a ratio of 1:1. The objective of this research is to compare the adsorp-tion capacity of the obtained sample, referred to as APC-3...

Mediterranean countries experience a large production of olive oil, thus generating huge quantities of non-biodegradable vegetation waters. The discharge of these effluents into aquatic environments seriously affects the quality of surface waters. This study investigated the potential use of carbon steel slag (SS) as an adsorbent and improver for r...

The relationship between agricultural activities, soil characteristics, and groundwater quality is critical, particularly in rural areas where groundwater directly supplies local people. In this paper, three agricultural sandy soils were sampled and analyzed for physicochemical parameters such as pH, water content, bulk density, electrical conducti...

In this paper, the fractal-like multiexponential (f-mexp) equation was modified by introducing the fractional fractal exponent to each stage of the adsorption process. The new equation was used for the analysis of kinetic adsorption of copper onto treated attapulgite. The modeling results show that the modified f-mexp equation fits properly the kin...

Fly ash and phosphogypsum are industrial by-products requiring a cost to get rid of. Their potential use in the synthesis of geopolymer bricks provides great benefits such as the saving use of natural resources and the solid by-product waste management. Compressive strength is the most important parameter for geopolymer bricks design. In this study...

In this paper, Moroccan treated attapulgite (MTATP) was used as a mineral adsorbent for the removal of copper ions from aqueous solution. Fourier transform infrared spectroscopy (FTIR) was used to study the functional groups of attapulgite. Kinetic analysis of the experimental results was carried out by using the pseudo-first-order, pseudo-second-o...

Stinging nettle (Urtica dioica-Urticaceae) and borage (Borago officinalis-Boraginaceae) are two plants that demonstrated several therapeutic effects. The present study deals with the valorization of these two plants of the Tangier region. Preliminary studies show that the quantity and the quality of polyphenols extracted from both plants depend on...

In this study three fractal-like adsorption kinetic equations were generalized, taking into consideration the changes of solute concentration in time. The equations are the pseudo-(n, α)(p-(n, α)), the fractal-like mixed-1,2 order (f-MO) and the fractal-like multi-exponential (f-mexp). The new equations were used for the analysis of kinetic adsorpt...

The compressive strength (CS) of Moroccan geopolymer bricks, based fly ash and phosphogypsum, has been predicted by two artificial neural networks (ANNs), namely the multi-layer perceptron (MLP) network and the radial basic function (RBF) network.

The effect of the concentration of the activator solution and curing time on compressive strength of geopolymer bricks based on Moroccan phosphogypsum and fly ash.

A comparison of linear and non-linear regression method for predicting the optimum isotherm was made using the experimental adsorption equilibrium data of Cu(II) onto treated Martil sand (TMS). For this, six error analysis methods were used: the coefficient of determination r², the sum of the squares of the errors, the sum of the absolute errors, t...

In this study,abundant and low coast natural clay is tested for its ability to retain copper cations.The experiments have been carried out batch wise and the influence of physico-chemical key parameters such as the solution pH, the temperature,etc.The obtained experimental results have been fitted according to the two known adsorption models of Lan...

Les hétérostructures Bi 12 TiO 20 /BiFeO 3 ont été synthétisées avec succès par la méthode de coprécipitation. Elles ont été caractérisées par diffraction des rayons X, spectroscopie IRTF et microscopie électronique à transmission. Ces hétérostructures présentent une meilleure efficacité photocatalytique pour la décomposition de l'orange de méthyle...

Bi12TiO20/BiFeO3 heterostructures were successfully synthesized using coprecipitation method. The obtained powders were characterized by X-ray diffraction (XRD), Fourier Transform infrared (FTIR) and transmission electron microscopy (TEM). The prepared Bi12TiO20/BiFeO3 heterostructures showed high photocatalytic activity for the degradation of meth...

Treated Martil sand (TMS) is proposed as a mineral sorbent for removal of copper ions from aqueous solutions. TMS was characterized by different techniques such as XRF, XRD, FTIR, SEM, and BET. The effects of pH, adsorbent dosage, ionic strength, temperature, and contact time were investigated. Binding Cu(II) was found to be highly pH dependent. Th...

Adsorption can be an efficient low-cost process to remove toxic heavy metals from wastewater. This study investigated the efficiency of treated Martil sand (TMS) in the removal of copper(II). Adsorption equilibrium data were calculated for Langmuir and Freundlich isotherms. It was found that the sorption of Cu(II) was better suited to the Freundlic...

Two samples of Bi2O3 were synthesized by soft chemistry methods (co-precipitation and sol-gel). They were characterized by XRD and FTIR. The photo-degradation kinetics of Methyl Orange (MO), under UV irradiation, in an aqueous suspension at room temperature of Bi2O3 is studied as a function of the initial pH. The results obtained show that the oxid...

This work aims to reduce the impact of basic dyes such as methylene blue by Moroccan natural and activated clay, using the technique of adsorption. The physico-chemical characterization of this clay shows the presence of muscovite and chlorite-serpentine. The adsorption experiments show that the used clay is very effective in the removal of a basic...

Le sable de Martil modifié est utilisé comme adsorbant pour éliminer le cuivre des solutions aqueuses. Les techniques IRTF, DRX, MEB et spectrophotométrie sont utilisées pour caractériser les échantillons de sable. L'adsorption de Cu(II) est influencée par le pH du milieu. Le pourcentage d'adsorption augmente avec l'augmentation de la quantité d'ad...

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We describe the synthesis, structural and microstructural characterization of a strontium antimonate, Sr1.5Sb0.5O3−y (y ∼ 0.25), with a cubic, double-perovskite structure and a large concentration of oxygen vacancies with no apparent long-range order. High resolution electron microscopy indicates, however, that short-range ordering phenomena may oc...

The detailed investigation of the SrO-Sb2O3 binary system is reported. The samples were prepared at 1200°C under ambient pressure. Sr2Sb2O7 and SrSb2O 6 binary compounds are confirmed. A Sr(Sr0.5Sb 0.5)O3-y new mixed oxide showing a double perovskite related structure is described. It gives rise to Sr(1.5-x)Sb (0.5+x)O3-y(0≤x≤0.64) solid solution,...

Several Fe–Ga mixed oxide samples denoted as Fe1 − xGax (x = 0, 0.10, 0.25, 0.50, 0.75, 0.90) have been synthesised by a conventional coprecipitation method at controlled pH, dried at 363 K for 24 hours and calcined at 673 K and 1073 K for 3 hours. All samples were characterised by X-ray diffraction, chemical analyses, thermogravimetry and differen...