Eco-friendly zeolites for innovative purification of water from cationic dye and heavy metal ions.

Ziejewska, Celina; Grela, Agnieszka; Łach, Michał; Marczyk, Joanna; Hordyńska, Natalia; Szechyńska‐Hebda, Magdalena; Hebda, Marek

doi:10.1016/j.jclepro.2023.136947

Cited by 17 publications

(4 citation statements)

References 83 publications

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“…The pronounced contamination of aquatic ecosystems caused by heavy metal presence represents a crucial and pressing concern, underscoring the necessity to address this global challenge [8,9]. In this regard, various methodologies for water remediation have been reported, including ion exchange, electrochemical treatment, chemical precipitation, water dilution, adsorption, and sediment neutralization through biological and catalytic methods [10][11][12][13]. Among these, the adsorption technique has gained significant recognition for its eco-friendly, convenient, and highly efficient attributes.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Zeolite–Silver Nanocomposites via Green Methods for Water Contaminant Mitigation and Modeling Approaches

Ruíz-Baltazar,

Reyes-López,

Méndez-Lozano

et al. 2024

Nanomaterials

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This study explores cutting-edge and sustainable green methodologies and technologies for the synthesis of functional nanomaterials, with a specific focus on the removal of water contaminants and the application of kinetic adsorption models. Our research adopts a conscientious approach to environmental stewardship by synergistically employing eco-friendly silver nanoparticles, synthesized using Justicia spicigera extract as a biogenic reducing agent, in conjunction with Mexican zeolite to enhance contaminant remediation, particularly targeting Cu2+ ions. Structural analysis, utilizing X-ray diffraction (XRD) and high-resolution scanning and transmission electron microscopy (TEM and SEM), yields crucial insights into nanocomposite structure and morphology. Rigorous linear and non-linear kinetic models, encompassing pseudo-first order, pseudo-second order, Freundlich, and Langmuir, are employed to elucidate the kinetics and equilibrium behaviors of adsorption. The results underscore the remarkable efficiency of the Zeolite–Ag composite in Cu2+ ion removal, surpassing traditional materials and achieving an impressive adsorption rate of 98% for Cu. Furthermore, the Zeolite–Ag composite exhibits maximum adsorption times of 480 min. In the computational analysis, an initial mechanism for Cu2+ adsorption on zeolites is identified. The process involves rapid adsorption onto the surface of the Zeolite–Ag NP composite, followed by a gradual diffusion of ions into the cavities within the zeolite structure. Upon reaching equilibrium, a substantial reduction in copper ion concentration in the solution signifies successful removal. This research represents a noteworthy stride in sustainable contaminant removal, aligning with eco-friendly practices and supporting the potential integration of this technology into environmental applications. Consequently, it presents a promising solution for eco-conscious contaminant remediation, emphasizing the utilization of green methodologies and sustainable technologies in the development of functional nanomaterials.

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Section: Introductionmentioning

confidence: 99%

Sustainable Zeolite–Silver Nanocomposites via Green Methods for Water Contaminant Mitigation and Modeling Approaches

Ruíz-Baltazar,

Reyes-López,

Méndez-Lozano

et al. 2024

Nanomaterials

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show abstract

Section: Introductionmentioning

confidence: 99%

“…In recent years, there has been a growing interest in the topic of toxic metals, their mobility in the soil–water environment, methods of their immobilization, and removal from wastewater [ 1 , 2 , 3 , 4 , 5 , 6 ]. Metals accumulating in soil indirectly affect human and animal health through the food chain, dust, and contamination of surface and groundwater, potentially leading to serious damage [ 6 , 7 , 8 ]. Zinc (Zn) is an essential trace element supporting the immune system, but its excess can lead to immune system disorders and copper (Cu) deficiency; Cu aids enzymatic functions, but in excess, it causes liver and kidney damage [ 6 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…Metals accumulating in soil indirectly affect human and animal health through the food chain, dust, and contamination of surface and groundwater, potentially leading to serious damage [ 6 , 7 , 8 ]. Zinc (Zn) is an essential trace element supporting the immune system, but its excess can lead to immune system disorders and copper (Cu) deficiency; Cu aids enzymatic functions, but in excess, it causes liver and kidney damage [ 6 , 9 ]. The use of fertilizers containing high concentrations of Cu and Zn, industrial activities, and flotation tailings storage are the most common sources of these metals [ 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

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Mobility of Zn and Cu in Bentonites: Implications for Environmental Remediation

Nartowska,

Podlasek,

Vaverková

et al. 2024

Materials

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The aim of this study was to evaluate the mobility of copper (Cu) and zinc (Zn) and their impact on the properties of bentonites and unfrozen water content. Limited research in this area necessitates further analysis to prevent the negative effects of metal interactions on bentonite effectiveness. Tests involved American (SWy-3, Stx-1b) and Slovak (BSvk) bentonite samples with Zn or Cu ion exchange. Sequential extraction was performed using the Community Bureau of Reference (BCR) method. Elemental content was analyzed via inductively coupled plasma optical emission spectrometry (ICP-OES). Unfrozen water content was measured using nuclear magnetic resonance (1H-NMR) and differential scanning calorimetry (DSC). Results showed a significant influence of the main cation (Zn or Cu) on ion mobility, with toxic metal concentrations increasing mobility and decreasing residual fractions. Mobile Zn fractions increased with larger particle diameters, lower clay content, and shorter interplanar spacing, while the opposite was observed for Cu. Zn likely accumulated in larger clay pores, while Cu was immobilized in the bentonite complex. The stability of Zn or Cu ions increased with higher clay content or specific surface area. Residual Zn or Cu fractions were highest in uncontaminated bentonites with higher unfrozen water content, suggesting the potential formation of concentrated solutions in sub-zero temperatures, posing a threat to the clay–water environment, especially in cold regions.

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Hydroxyl radicals-mediated zeolite crystallization: impacts on the kinetics, crystal morphologies, and catalytic application

Novita,

Kadja

2024

J Porous Mater

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Eco-friendly zeolites for innovative purification of water from cationic dye and heavy metal ions.

Cited by 17 publications

References 83 publications

Sustainable Zeolite–Silver Nanocomposites via Green Methods for Water Contaminant Mitigation and Modeling Approaches

Sustainable Zeolite–Silver Nanocomposites via Green Methods for Water Contaminant Mitigation and Modeling Approaches

Mobility of Zn and Cu in Bentonites: Implications for Environmental Remediation

Hydroxyl radicals-mediated zeolite crystallization: impacts on the kinetics, crystal morphologies, and catalytic application

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