A comparative study of treated clay and synthesized Fe/ZSM-5 zeolite for application in the electrochemical reduction of chromium(VI) as an environmental sensor

El-kordy, Abderrazek; Nizar, Sondos; Tijani, Najib; Kawde, Abdel-Nasser; Elgamouz, Abdelaziz

doi:10.1007/s10008-024-05877-8

J Solid State Electrochem

2024

DOI: 10.1007/s10008-024-05877-8

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A comparative study of treated clay and synthesized Fe/ZSM-5 zeolite for application in the electrochemical reduction of chromium(VI) as an environmental sensor

Abderrazek El-kordy,

Sondos Nizar,

Najib Tijani

et al.

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Cited by 3 publications

References 33 publications

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Raw clay material-based modified carbon paste electrodes for sensitive heavy metal detection in drinking water

Sanou,

Coulibaly,

N’dri

et al. 2024

J Mater Sci

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A new electrode based on carbon paste (CP) modified with natural clay was used for heavy metals detection. The investigation of the raw clay material (X-ray diffraction, infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, thermal analysis and particle size distribution) revealed different morpho-structural properties of the natural material. The electrochemical behaviour of the modified carbon paste electrode and its ability to detect heavy metals (Zn2+, Cd2+, and Cu2+) was studied by different electrochemical techniques like cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and square wave anodic stripping voltammetry (SWASV). Both electrochemical and analytical parameters of the investigated modified electrode recommend them as stable, sensitive and reproducible sensors for individual heavy metals detection.

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Raw clay material-based modified carbon paste electrodes for sensitive heavy metal detection in drinking water

Sanou,

Coulibaly,

N’dri

et al. 2024

J Mater Sci

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Synthesis and characterization of faujasite zeolite membrane for selective enrichment of Arthrobacter sp. in synthetic wastewater

El-kordy,

Kanzy,

Elgamouz

et al. 2024

Water Science &Amp; Technology

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This paper centers on the preparation and characterization of both a clay support and a faujasite zeolite membrane. Additionally, the study explores the development of bacterial media to assess the performance of these prepared membranes. The faujasite zeolite membrane was created using the hydrothermal method, involving the deposition of a faujasite layer to fine-tune the pore sizes of the clay support. The clay supports were crafted from a clay was sieved to particle size Φ ≤ 63 μm, and compacted with 3.0 wt.% activated carbon, then sintered at 1,000 °C. Distilled water fluxes revealed a decrease from 1,500 L m−2 h−1 to a minimum of 412 L m−2 h−1 after 180 min of filtration. Both membranes were characterized by XRF, XRD, FTIR, adsorption–desorption of nitrogen (N2), and SEM-EDS. PCR technique was used for the identification of the isolated Arthrobacter sp., and the retention of the bacteria on the clay support and the faujasite zeolite membrane were found to be 96 and 99%, respectively. The results showed that the faujasite zeolite membrane passed the clay support due to a narrow of the faujasite zeolite membrane of 2.28 nm compared to 3.55 nm for the clay supports.

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Enhanced Cr(VI) Reduction Efficiency Using Clay Support and Hydrothermally Synthesized LTA Zeolite Composite Membrane

El-Kordy,

Elgamouz,

Lemdek

et al. 2024

MSF

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The filtration of hexavalent chromium (Cr(VI)) presents a significant challenge in water treatment due to its toxicity and environmental impact. This study is oriented towards the development of a zeolite-based membrane for the removal of Cr(VI) ions. Flat supports are made from clay with a particle size between 160 and 250 µm and then characterized by different techniques namely FTIR, XRD, and point of zero charge (pHpzc). The clay support creates a porous structure, ideal for adsorbing Cr(VI) ions, while the LTA-type zeolite membrane offers selective permeability, through its narrow pore size, tuning the volume down on Cr(VI). Filtration experiments were conducted under a pressure of 1.0 bar, initial Cr(VI) concentration of 10-4 M and pH = 5.4 to evaluate the efficiency and performance of the composite membrane. Results demonstrate significant reduction in Cr(VI) concentration, with a 30% and 50% retention on the clay support and the LTA-zeolite membrane respectively. The proposed methodology has the potential to create advanced water treatment systems that can effectively remove Cr(VI) pollutants from aqueous solutions, thereby challenging important environmental issues.

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A comparative study of treated clay and synthesized Fe/ZSM-5 zeolite for application in the electrochemical reduction of chromium(VI) as an environmental sensor

Cited by 3 publications

References 33 publications

Raw clay material-based modified carbon paste electrodes for sensitive heavy metal detection in drinking water

Raw clay material-based modified carbon paste electrodes for sensitive heavy metal detection in drinking water

Synthesis and characterization of faujasite zeolite membrane for selective enrichment of Arthrobacter sp. in synthetic wastewater

Enhanced Cr(VI) Reduction Efficiency Using Clay Support and Hydrothermally Synthesized LTA Zeolite Composite Membrane

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