Characterization and evaluation of Moringa Oleifera Leaves Green Powder and its alkali-activated form as eco-friendly biosorbent for the effective removal of safranin dye from synthetic wastewater

Ahmed, Hameed M.; Radha, Fuad Hama Sharif; Agha, N. H.; Amin, Khanda F.M.; Shwan, Dler M. S.

doi:10.1007/s11144-023-02438-4

Cited by 6 publications

(2 citation statements)

References 33 publications

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“…3,11,12 The number of contaminants a sorbent can remove is dependent on the kinetic equilibrium and the composition of the sorbent's cellular surface. 13,14 Out of these treatment technologies, the adsorption method presents several advantages, including ease of use, high removal efficiency, simplicity, and low cost. 15 Utilizing biosorbents in the adsorption process is particularly desirable due to their abundance and economic viability compared to other dye removal processes.…”

Section: Introductionmentioning

confidence: 99%

An investigation into the prospective applications of bio-catalyst metal frameworks: a novel catalyst for improved removal of Congo red from aqueous solutions

Ahmed,

Hassan,

Aziz

2024

New J. Chem.

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Section: Introductionmentioning

confidence: 99%

An investigation into the prospective applications of bio-catalyst metal frameworks: a novel catalyst for improved removal of Congo red from aqueous solutions

Ahmed,

Hassan,

Aziz

2024

New J. Chem.

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“…Their high water solubility makes conventional methods of dye removal from contaminated water ineffective, with textile industries alone consuming vast quantities of water, often leading to a loss of more than 15% due to dye pollution [5] [6]. Additionally, dyes exhibit considerable toxicity, posing health risks to humans, and adversely affecting marine organisms by reducing light permeability, metabolic rates, and oxygen levels in water [7] [8]. Of particular concern is methylene blue (MB), a cationic dye belonging to the dye family, extensively utilized in diverse chemical, biological, medical, and industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Utilizing sequence transformation of selective copper metal as an efficient heterogeneous Fenton-like catalyst for the degradation of aqueous methylene blue

Ahmed,

Mustafa,

Aziz

et al. 2023

Reac Kinet Mech Cat

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This article elucidates the pivotal role of catalysts in effecting the selective deposition of copper metal onto carbon black extracted from discarded tires via the Chemical Vapor Deposition (CVD) technique. The CVD process involves intricate chemical interactions between gaseous constituents, facilitating the formation of thin coatings on substrate surfaces. This method, noted for generating materials of elevated purity, density, and strength, has gained prominence in diverse sectors including heterogeneous catalysis. Selective Metal by Chemical Vapor Deposition (SMCVD) represents an augmentation approach for fabricating nanomaterials on thermally delicate substrates, leveraging suitable metal catalysts. These catalysts not only facilitate deposition at notably low temperatures but also yield high-purity films. The study presents empirical evidence of proficient synthesis of selective metal heterogeneous catalysts through CVD. Furthermore, the application of SMCVD as an economical means for large-scale production of pristine carbon black from tire waste is delineated. Given the pertinence of curbing organic dye pollution for ecological and human well-being, the article underscores the promise of heterogeneous Fenton oxidation as a remediation technique. This involves the removal of organic pollutants and is reliant on Fenton-like catalysts. The study details the creation of such catalysts (Cu-CB) via the CVD deposition of copper metal onto carbon black derived from discarded tires.The resultant Cu-CB catalyst finds utility as a stimulant for H2O2 in Fenton-like degradation, particularly of aqueous methyl blue (MB), a prototypical organic pollutant, across a broad pH spectrum. Empirical investigations encompassing variables such as pH, Cu-CB concentration, H2O2 dosage, and initial MB concentration were conducted to discern their influence on MB removal. Remarkably, degradation efficiencies of up to 97% were achieved within 30 minutes under near-neutral pH conditions, employing 100 mg/L of H2O2 and 0.075 g/L of Cu-CB.Moreover, the reusability of Cu-CB for multiple cycles, alongside a facile regeneration process devoid of supplementary chemicals, underscores its practical efficacy. The article encompasses a suite of analytical techniques-FESEM, EDS, BET surface analysis, XRD, FTIR, and XPS-to characterize the developed catalyst. A scavenging assay affirms the pivotal role of hydroxyl radicals (•OH) as the chief reactive oxygen species (ROS) responsible for MB degradation. In summation, the study presents an innovative catalyst design strategy, exemplified by the heterogeneous Cu-CB/H2O2 system, with promising implications for organic dye wastewater treatment.

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Magnetic oxide nano-porous adsorbents: a highly efficient approach for acid Fuchsin removal from medical laboratory effluents via adsorption process

Ahmed

Shwan

Agha

et al. 2023

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Natural clay minerals offer a straightforward and industrially e cient pathway for the large-scale production of active silica materials exhibiting diverse morphologies and functions. However, the presence of magnetic oxide nanoparticles (Fe 3 O 4 ), enriched with metal ions, generated during this process has led to their classi cation as contaminants in laboratory e uents due to their speci c adsorption of Acid Fuchsin Dye (AFD) in aqueous solutions. This study focuses on the characterization of clay minerals, particularly examining the interlayer spacing in smectites. Notably, the synthesis of Magnetic Oxide Nano-Porous Clay (MONPC) results in an approximate doubling of the speci c surface area from 10.02 to m 2 g -1 compared to natural clay. The ndings suggest a signi cant impregnation of Fe 3 O 4 within the Natural Clay (NC) matrix. The impregnated and natural clay samples were comprehensively characterized using XRD, SEM-EDS, FTIR, and N 2 adsorption-desorption techniques, con rming the presence of a porous surface structure with a high surface area. Utilizing an adsorbent concentration of 0.1 g/L, MONPC achieved complete removal of AFD from initial dye solutions with a 400 mg/L concentration which is attributed to the strong H-bonding ability of MNOPC with AFD dye as indicated by adsorption mechanism study. The adsorption capacity of AFD onto MONPC reached equilibrium within 60 to 120 minutes, with an initial pH of 9. The Pseudo-Second-Order model accurately depicted the chemisorption process of AFD adsorption, while the Freundlich isotherm model consistently provided a superior t to the data compared to the Langmuir model. Thermodynamic analysis of the MONPC adsorbent demonstrated that the adsorption process was exothermic and spontaneous, with signi cant entropic changes at the solid-liquid interface. These results suggest that the adsorption of AFD dye onto MONPC was favorable in terms of enthalpy but unfavorable in terms of entropy. Considering the high surface area and enhanced adsorption capacity of MONPC, it exhibits tremendous potential as a promising adsorbent for the removal of AFD in wastewater treatment applications.

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Characterization and evaluation of Moringa Oleifera Leaves Green Powder and its alkali-activated form as eco-friendly biosorbent for the effective removal of safranin dye from synthetic wastewater

Cited by 6 publications

References 33 publications

An investigation into the prospective applications of bio-catalyst metal frameworks: a novel catalyst for improved removal of Congo red from aqueous solutions

An investigation into the prospective applications of bio-catalyst metal frameworks: a novel catalyst for improved removal of Congo red from aqueous solutions

Utilizing sequence transformation of selective copper metal as an efficient heterogeneous Fenton-like catalyst for the degradation of aqueous methylene blue

Magnetic oxide nano-porous adsorbents: a highly efficient approach for acid Fuchsin removal from medical laboratory effluents via adsorption process

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