ABDERRAHMANE Hiri

GHARMATI Zineb , SAKET Fadila

Etude comparative sur la régénération et la réutilisation d’une phase HDL et son oxyde dérivé dans l’adsorption du rouge Congo

BEN ABDENNABI Yamina , MOUSSA Mabrouka

Etude de la régénération et la réutilisation d’une phase HDL et son oxyde dérivé dans la décoloration des eaux par adsorption

Benali Abdelkrim , Mabrouki ilyas

Étude des propriétés physicochimique de la silice

BAHADJI Mounir , BELHADJ Abdellah

Etude de l’effet de la composition des HDL sur la décoloration des eaux

The presence of various organic pollutants in wastewater, surface water, and groundwater can be attributed to sources such as contaminated soil, agricultural runoff, industrial wastewater, and leaks from the storage of hazardous compounds. These pollutants, which include dyes, volatile phenols, benzene, and benzene derivatives, are highly toxic and difficult to biodegrade. Conventional treatment methods, such as biological processes, may not be effective in removing these substances. Therefore, advanced treatment techniques are necessary to enhance water quality by eliminating dyes. Layered Double Hydroxides (HDLs), particularly NiFeCO3 HDLs, also known as nickel-iron carbonate, are complex mineral compounds that have attracted considerable interest in materials science, energy storage, and wastewater treatment. Composed of nickel, iron, and carbonate ions, these compounds possess unique structures and properties. In this study, NiFeCO3 HDL was synthesized using a co precipitation method. The physicochemical characterization was conducted through various analytical techniques, including X-ray diffraction (XRD), differential thermal analysis (DTA), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and surface characterization using BET analysis. The physicochemical analysis, alongside assessments of the material's electrochemical and catalytic properties, demonstrated that NiFeCO3 HDLs possess significant potential as anode materials for lithium-ion batteries. They exhibit high capacity, excellent rate capability, and remarkable cycling stability. Additionally, the inclusion of iron in the structure enhances the material's catalytic properties. The combination of nickel and iron within the HDL structure results in unique activity, making it suitable for applications in water purification.

Citation

Souad TALHI , ACHOUR Dakhouche , Abderrahmane hiri , gha.radji@univ-adrar.edu.dz, ,(2024-12-18), Water treatment use the Hydroxide Double Layer: Synthesis of NiFeCO3 by co-precipitation method.,2ÈME SÉMINAIRE NATIONAL Matériaux pour l’Environnement et le Développement Durable (MEDD) (webinaire),Université de Relizane

Water is a scarce resource and is considered a fundamental pillar of sustainable development. The modern development of society requires more and more drinking water. For this cleaner wastewater, treatments are key factors. Among those that exist, Layered Double Hydroxides (HDLs). NiFeCO3 HDLs, also known as nickel iron carbonate, is a complex mineral compound that has gained significant attention in the fields of materials science and energy storage and wastewater treatments. This compound is composed of nickel, iron, and carbonate ions, and its unique structure and properties have made The synthesis of NiFeCO3 HDLs has been extensively studied, and various methods have been employed, such as co precipitation, hydrothermal, and sol-gel techniques. In this work, NiFeCO3 HDL was synthesized using co-Wastewater Treatment by nickel–iron layered double hydroxide (LDH). precipitation method. Physicochemical characterization was carried out using analytical methods: X-ray diffraction (DRX), differential thermal analysis (ATG), Scanning electron microscopy (SEM).

Citation

Souad TALHI , ACHOUR Dakhouche , Abderrahmane hiri , gha.radji@univ-adrar.edu.dz, ,(2024-12-11), Wastwatet treatment by nickel-iron layered double hydroxide (LDH).,1st National Conference on Sustainable Management of Waste, Effluents and Emissions (CSMWEE-2024),ENSET–Skikda

Freshwater resources are being threatened by the activities of a growing population and the escalating rate of overuse. Water pollution, caused by effluents from industrial, agricultural, and domestic sources, is detrimental to the environment. Consequently, reducing pollution through the adoption of eco-friendly technologies has become extremely important. Synthetic dyes, commonly utilized in various industries such as textiles, leather tanning, printing, and food processing, are one of the harmful effluents that need to be addressed. The treatment of effluents from textile industries typically involves using physico-chemical techniques and biological methods to remove organic matter, nitrogen, phosphorus, and metals. However, these traditional approaches have been found to be inefficient. Currently, there is a high priority among the scientific community to develop environmentally-friendly and cost-effective technologies for removing dyes from textile effluents. Layered double hydroxides (LDH) with adsorption properties have been found to be promising in water treatment due to their ease of adsorption and recyclability. The LDH, also known as hydrotalcite like compounds or anionic clays, are 2-D nano-materialsthat can be used as storage matrix (hosting), and control the release of different anionic species, LDH present a great number of properties due to their varied compositions and methods of synthesis. In this study, the preparation and characterization of LDHs will be discussed through the following methods and techniques: DRX, MEB, ATG, BET. Layered double hydroxides (LDHs) have proven to be good candidates for removing anionic dyes from aqueous solutions and waste treatment in water. These materials, which are endowed with high anionic exchange capacity and good adsorptive ability.

Citation

Souad TALHI , ACHOUR Dakhouche , Abderrahmane hiri , gha.radji@univ-adrar.edu.dz, ,(2024-12-10), Layered double hydroxides: Nanomaterials for application in waste treatment water,1ST National Conference: Water, Environment and Renewable Energies SN3ER’24,University Mohamed Boudiaf of M’sila

Industrialization is the primary cause of water and environmental pollution. The release of various pollutants, such as heavy metals, anions, dyes, organic compounds, pharmaceutical drugs, and pesticides, into the water has detrimental effects on the environment, human health, and wildlife. Therefore, it is crucial to develop technologies that can effectively remove toxic pollutants from water and wastewater in order to ensure its safety for human consumption. Many efforts have been made to remove dissolved organic dyes from wastewater, culminating in the development of materials such as double layer hydroxide (HDL). Hydrotalcite materials (HDL) are a type of layered compounds that are easily synthesized, non-toxic, and inexpensive. They also have a wide range of physical and chemical properties. Layered compounds are a class of compounds with a lamellar structure, allowing for ion exchange between the layers and possessing cationic characteristics. In this article, we will focus on the synthesis methods of LDH-based materials, their structural features, techniques for physicochemical characterization, and their applications in pollutant remediation. Layered double hydroxides (LDHs) have emerged as promising candidates due to their unique characteristics, such as adjustable structure, straight forward synthesis procedures, stability, large surface area, and the ability to form various nano-composites. These properties make LDHs highly effective in adsorbing a wide range of pollutants from wastewater.

Citation

Souad TALHI , ACHOUR Dakhouche , Abderrahmane hiri , gha.radji@univ-adrar.edu.dz, ,(2024-12-09), Using layered double hydroxides (LDHs) to remove color and organics from water.,The 3rd National Environment & Sustainable Management Seminar,Mostaganem - Algeria

The synthesis of spinel ferrite nanoparticles is rapidly gaining popularity as a research field, driven by technological interests and their appealing magnetic properties. Spinel ferrites have the general formula MFe2O4, with M representing a divalent metal ion. These compounds exhibit a cubic structure and are utilized across a variety of technological applications. Over the past decade, ferrite nanoparticles have attracted considerable interest due to their high permeability, electrical resistivity, and advantageous electromagnetic properties. Consequently, they are well-suited for numerous applications, including magnetic storage, microwave devices, biosensors, drug delivery, disease diagnosis, gas sensors, energy conversion, photocatalysis, and magnetic separation. Several studies have been conducted on the preparation of this type of ferrite using various chemical methods. In this study, NiFe2O4 spinel nickel ferrite was synthesized using the coprecipitation method. The physicochemical properties were characterized through various analytical techniques, including X-ray diffraction (XRD), differential thermal analysis (DTA), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). Nickel ferrite (NiFe2O4) is a significant soft ferrite utilized in various industries, appreciated for its qualities that make it ideal for soft magnetic core materials in power transformers and as a photocatalyst. It possesses low coercivity and high electrochemical stability. Ferrites produced using this method display smaller particle sizes, smooth surfaces, stability, and a homogeneous structure.

Citation

Souad TALHI , ACHOUR Dakhouche , Abderrahmane hiri , gha.radji@univ-adrar.edu.dz, ,(2024-11-20), CO-PRECIPITATION SYNTHESIS, CHARACTERIZATION AND APPLICATIONS OF SPINEL FERRITE NANOPARTICLES.,3ed ICMM 2024 INTERNATIONAL CONFERENCE ON MATERIALS AND MECHANICS 20-21 November, Boumerdes University – Algeria,Boumerdes University – Algeria

In recent years, nanostructured magnetic nanocomposites have received increasing attention due to their unique chemical and physical properties and their inexpensive nature and their wide range of applications in several fields such as pharmaceuticals, energy, water treatment and catalysts. Many nanomaterials have been prepared and the most effective is the layered double hydroxide (LDH) recognized as anionic clays or brucite-like compounds, these two subclasses are significant types of ionic layered materials. The primary components of LDHs are the charged layers, which offer a variety of chemical compounds with versatile applications, such as biocompatibility, adsorption, intercalation, and ion exchange, these are the foundations of the diverse technological applications of LDHs across various fields, including medicine, polymer industries, electrochemistry, food, catalysis, and drug delivery. Compared to other drug delivery mechanisms, which often suffer from low circulation stability, poor bioavailability, and drug degradation, LDHs serve as exceptional drug nano-carriers. They are relatively cost-effective, exhibit low toxicity to cells, and demonstrate good biocompatibility. In this study, NiFeCO3 HDL was synthesized using the coprecipitation method. The physicochemical characterization was performed with various analytical techniques, including X- ray diffraction (XRD), differential thermal analysis (DTA), Fourier transform infrared spectroscoy (FTIR), scanning electron microscopy (SEM), and surface characterization using the BET method. Using physicochemical analysis methods and evaluating the electrochemical and catalytic properties of the material,. The integration of nickel and iron into the HDL structure provides unique activity, making it suitable for applications in water purification (specifically for eliminating colorants through advanced oxidation processes), energy conversion, and electrocatalysis.

Citation

Souad TALHI , Abderrahmane hiri , ACHOUR Dakhouche , gha.radji@univ-adrar.edu.dz, ,(2024-10-30), Synthesis and application of layered double hydroxide: Nanomaterial for applications in water treatment.,The 1st International Conference on Technological Applications of Materials (ICTAM'24),Setif 1 University, Algeria