A5007471079- Layered Double Hydroxides Synthesis and Applications
- Phosphorus and nutrient management
- Magnesium Oxide Properties and Applications
- Adsorption and biosorption for pollutant removal
- Nanomaterials for catalytic reactions
- Inorganic Chemistry and Materials
- Advanced Photocatalysis Techniques
- Supercapacitor Materials and Fabrication
- Covalent Organic Framework Applications
- Pharmaceutical and Antibiotic Environmental Impacts
- Mesoporous Materials and Catalysis
- Advanced oxidation water treatment
- Chemical Thermodynamics and Molecular Structure
- Membrane Separation Technologies
- Molecular Sensors and Ion Detection
- Analytical Chemistry and Chromatography
- Analytical Chemistry and Sensors
- Inorganic and Organometallic Chemistry
- Synthesis of Tetrazole Derivatives
- Water Quality Monitoring and Analysis
Cadi Ayyad University
2000-2021
École Normale Supérieure - Marrakech
2006-2018
École Normale Supérieure - PSL
2007-2013
Al Akhawayn University
1999
A new hybrid material with the composition [Zn1.9Al(OH)5.8][Cl2C6H3OCH2CO2·2.83H2O] has been synthesised via ion exchange of chloride by ions a molecule belonging to pesticide family, 2,4-dichlorophenoxyacetate (2,4D). The in zinc–aluminium–chloride layered double hydroxide, [Zn–Al–Cl], was investigated X-ray diffraction and infrared spectroscopy. effects anion concentration solution, 2,4D/[Zn–Al–Cl] molar ratio, ageing time temperature on were studied. best sample, terms crystallinity...
Layered double hydroxides (LDHs), also called anionic clays, consist of cationic brucite-like layers and exchangeable interlayer anions. These hydrotalcite-like compounds, with Zn Al in the chloride space, were prepared following coprecipitation method at constant pH. The affinity this material for Remazol Blue 19, RB19 [2-(3-(4-Amino-9,10-dihydro-3-sulpho-9,10-dioxoanthracen-4-yl) aminobenzenesulphonyl) vinyl) disodiumsulphate], was studied as a function contact time, pH solutions LDH dose...
The exchange of chloride ions by from the pesticide family 2.4-dichlorophe- noxyacetate (2.4D) in ?Zn-Al-Cl? anionic clay was investigated X-ray diffraction and infrared spectroscopy. effects 2.4D concentration solution temperature on ion were studied. best sample terms crystallinity, obtained at 100 °C with a corresponding to solubility limit water. This further characterised chemical analyses scanning electron microscopy. anion intercalation effected without degradation anion.
The paper presents the removal of Acid Green 1 (AG1) from aqueous solutions by [Zn–Al–Cl]-layered double hydroxides (LDHs). LDH was prepared coprecipitation at constant pH. affinity this material for AG1 studied as a function contact time, pH solution, dose and AG1/LDH mass ratio. It found that 32 h are enough to reach equilibrium with maximum retention 8 an 100 mg ratio higher than 2. adsorption isotherm is L-type, described Langmuir model. results demonstrate on LDHs occurs external...
A study by dielectric polarization, microcalorimetry, and infrared spectrometry has allowed us to demonstrate the role played halogen in interactions between a series of chlorinated brominated derivatives methane (considered as types halogenated anesthetics) two tertiary amides taken models for an element membranes nervous cells. The inert organic solvent used was cyclohexane. are hydrogen bonding (or) types.
Clofibric acid (CA) is widely used as regulator of lipid levels in blood; it considered one the residual drugs that have a high persistence aquatic environment. After wastewater treatment, only small amount CA can be removed. The aim this work was to investigate reduction contaminated using calcined anionic clay ZnAl-CO3, which chosen for its higher adsorption capacity, recyclability, and non-regeneration sludge. maximum retention amount, Qm, exceeded 2220 mg g–1, value DH° suggested...
Calcined anionic clay based on zinc and aluminum was used to remove the pollutant CrO42- from wastewater. This adsorbent material derived layered double hydroxide (LDH) chosen for its higher adsorption capacity, affinity most pollutants, non-toxicity. The kinetic study suggesting a high between calcined LDH (CLDH). is retained in multilayer follows Freundlich model. Thermodynamic indicates physical interaction. elimination reaches 100% with retention capacity of 3333 mg/g. After cycles...
Hydrotalcite type material based on zinc, aluminum and carbonates was synthesized by coprecipitation method its derived calcined at 500°C (CHT) used to remove the textile dye methyl orange (MO). This adsorbent has a great potential for removing pollutants from aqueous solutions without generating sludge. Adsorption performed in batch experiments. A rapid process of retention confirmed kinetics reflects high affinity between CHT MO dye. The adsorption isotherms follow Langmuir model (L type)....
In the present study, calcined layered double hydroxides (CLDHs) were obtained by heating [Zn$_{2}$-Al-CO$_{3}$] at 500 $^{\circ}$C. The adsorption of textile dye acid green 1 (AG1) CLDH was carried out different pH levels, adsorbent--adsorbate contact times, and AG1/CLDH mass ratios. Equilibrium room temperature reached after 24 h, which confirmed kinetic modeling experimental data pseudo-second-order model. is described a Langmuir-type isotherm. comparative study isotherms in uncalcined...
Adsorption of Indigo Carmine (IC), an anionic dye, from aqueous solution by calcined Mg <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> -Al-CO xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> LDH was investigated in batch mode. The adsorption IC on CLDH is described Freundlich isotherm model. Characterization the CLDHs solids, both fresh and after removal X-ray diffraction infrared spectroscopy shows that enhanced reconstruction a...
Layered double hydroxides (LDH) are anionic clays with high anion exchange capacities. Calcination of LDH increases significantly their retention In the present study, calcined products (CLDH) were obtained by heating [Zn 2 -Al-CO 3 ] at 500°C. The adsorption textile dye Acid Green 1 (AG1) CLDH was performed different pH values, dye-adsorbent contact time and mass ratio AG1/CLDH. equilibrium room temperature is reached after 24 h, this confirmed rapid kinetic modeling experimental data...
Layered organic-inorganic hybrid nanocomposite, containing an organic dye in inorganic interlayer was prepared using indigo carmine (IC) and methyl orange (OM) as a guest Zn <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> -Al layered double hydroxide (LDH) host by ion exchange , with [Zn -Al-Cl] LDH aqueous solution. The affinity of the dyes studied function contact time, initial pH solutions concentration. It found that 8h is enough...
Fifteen percent of the total world production dyes is lost during dyeing process and released in textile effluents. Removal from wastewater one several major environmental concern because they are difficult to be removed by conventional treatment systems (biological, physical chemical methods) since designed resistant degradation or fading oxidizing agents light. Adsorption, however, an effective method for dye removal. In this way we studied application layered double hydroxides (LDHs)...
In this study, natural phosphate (NP) was used as adsorbent to remove Remazol Brilliant Blue R dye (RBBR) from aqueous solution. The effects of different factors that influence the uptake onto such pH solution, contact time and initial concentration has been investigated. experimental results show maximum adsorption occurred at value 11. test kinetic models shows process RBBR on NP follows pseudo-second order kinetic. isotherms data are found agree Freundlich model. amount adsorbed increases...