Layered silicate magadiite and its composites for pollutants removal and antimicrobial properties: A review

Mokhtar, Adel; Abdelkrim, Soumia; Hachemaoui, Mohammed; Adjdir, Mehdi; Zahraoui, Mehdi; Boukoussa, Bouhadjar

doi:10.1016/j.clay.2020.105823

Cited by 37 publications

(12 citation statements)

References 147 publications

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“…Therefore, the type of adsorption that occurred is mainly chemical adsorption, which makes the apatite's surface more hydrophobic than the quartz's surface and, ultimately, enhances its separation. These results run in agreement with the zeta potential and the adhesion measurement and with the preceding work (Combes et al, 2006;Michelot et al, 2015;Sarvamangala et al, 2017;Selim and Rostom, 2018;Mokhtar et al, 2020). The adsorption of protein (amino acids) products of Bacillus cereus onto the apatite is responsible for the higher adsorption affinity to the apatite surface, in comparison to quartz.…”

Section: Ftir Measurementssupporting

confidence: 90%

Proteomic profile to explain the mechanism of the Bacillus cereus-phosphate mineral interaction

El-Ghammaz¹,

Hassan²,

Abdel-Khalek³

2021

Physicochem. Probl. Miner. Process.

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Bacillus cereus bacteria and their by-products were used as surface-active agents for surface hydrophobicity of the apatite in the flotation process leading to phosphate ores' enrichment. Recently, proteomics is used to investigate the biochemical processes through discovering new proteins or investigating protein-protein interactions. In this work, we investigated the physicochemical behavior of pure apatite and quartz minerals in the presence of Bacillus cereus using zeta-potential, FTIR, and hydrophobicity measurements. Our results indicated that isoelectric point (IEP) occurred at pH 4.7 for apatite and 2.1 for quartz mineral. Bacillus cereus treatment decreased IEP of apatite to 1.8; while there was no significant change in IEP value of quartz. We used comprehensive proteomic profile analysis of Bacillus cereus in the presence of apatite mineral to identify the biological mechanism and molecules involved in such enrichment capacity. Our data identified the up-regulated Surface Layer (S-Layer) protein in this bacterial strain to be associated with the best mineral yield.

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Section: Ftir Measurementssupporting

confidence: 90%

Proteomic profile to explain the mechanism of the Bacillus cereus-phosphate mineral interaction

El-Ghammaz¹,

Hassan²,

Abdel-Khalek³

2021

Physicochem. Probl. Miner. Process.

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“…The silicate mineral itself is an excellent adsorbent that has a large specific surface area and surface energy, which can adsorb metal ions on its surface. Ion exchanges refer to the use of interlayer metal examples in silicate minerals, such as Na + , Al 3+ , and other metal ions for ion exchange with heavy metal ions; this process belongs to electrostatic adsorption [ 14 , 15 ]. Therefore, it has great potential in the treatment of heavy metal wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Screening and Optimization of Conditions for the Adsorption of Cd2+ in Serpentine by Using Response Surface Methodology

Zhang

Wen-juan

2022

IJERPH

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In order to explore the optimal conditions for the adsorption of Cd2+ in serpentine, this paper studied the adsorption of simulated cadmium solutions with serpentine as an adsorbent. On the basis of a single factor experiment, four factors including the amount of serpentine, initial pH, the initial concentration of solutions, and adsorption time were selected as the influencing factors, and the adsorption quantity and adsorption rate of serpentine to Cd2+ were double response values using the Box–Behnken design. Response surface analyses were used to study the effects of four factors on the adsorption quantity and adsorption rate of serpentine on cadmium, and the interaction between various factors. The results showed that the optimum adsorption conditions were as follows: the amount of serpentine was 1%, the initial pH was 5.5, the initial solution concentration was 40.83 mg·L−1, and the adsorption time was 26.78 h. Under these conditions, the theoretical adsorption quantity and adsorption rate of serpentine to Cd2+ were 3.99 mg·g−1 and 95.24%, respectively. At the same time, after three repeated experiments, the actual adsorption quantity and adsorption rate of serpentine to Cd2+ were 3.91 mg·g−1 and 94.68%, respectively, and the theoretical value was similar to the actual value. Therefore, it was proved that the experimental design of the regression model is reliable, and it is feasible to use the response surface method to optimize the adsorption conditions of serpentine on Cd2+.

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“…There are a considerable number of published articles covering various aspects of magadiites, such as synthetic methodologies, surface modification, hypotheses for structural elucidation, and application as materials in advanced technologies and catalysis. ,,,, This constant evolution is shown in Figure , based on an advanced search in the ScienceDirect and Web of Science databases for “magadiite” in the title, abstract, or keywords, which revealed a growing number of research articles published between 1995 and 2021. However, there appears to be very few review articles that address this subject. , No studies focusing on the different synthesis processes and on the versatility of different applications of magadiites and/or hybrids magadiites could be found in the literature. In review papers, the different methods of preparing magadiites and the subsequent uses based on their active sites or specific physicochemical properties can be analyzed.…”

Section: Introductionmentioning

confidence: 99%

Progress in Development of Magadiite to Produce Multifunctional Lamellar Materials

Santos

Assis

Silva

et al. 2022

ACS Appl. Mater. Interfaces

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The attractive properties of magadiite, a lamellar and crystalline material, could give rise to new industrial processes due to its unique and modulating intrinsic properties. In this context, the high degree of expansion of its lamellae, a key factor for its potential use in several areas of scientific research, has attracted the attention of several researchers. The aim of this review is to provide a historical overview of the hypothetical models developed to explain the magadiite crystalline structure. Furthermore, different synthesis strategies for the preparation of magadiites as sodic, protonic, and hybrid (inorganic−inorganic and inorganic−organic) materials are discussed along with several routes for obtaining modified magadiites. Also, the use of magadiite in catalytic reactions, notably in ethanol dehydration and fructose conversion reactions, is a growing area of research. Other potential applications include the adsorption and absorption of environmental pollutants (e.g., phenol and methylene blue in wastewater), use as a photocatalyst in the oxidation of toluene, and use in medicine (e.g., as a drug delivery or antibacterial/antifungal agent). This highlights the many opportunities for the development of new synthesis methods to obtain multifunctional materials in the search for new applications.

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Layered silicate magadiite and its composites for pollutants removal and antimicrobial properties: A review

Cited by 37 publications

References 147 publications

Proteomic profile to explain the mechanism of the Bacillus cereus-phosphate mineral interaction

Proteomic profile to explain the mechanism of the Bacillus cereus-phosphate mineral interaction

Screening and Optimization of Conditions for the Adsorption of Cd2+ in Serpentine by Using Response Surface Methodology

Progress in Development of Magadiite to Produce Multifunctional Lamellar Materials

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