Kinetics, thermodynamics, equilibrium, surface modelling, and atomic absorption analysis of selective Cu(<scp>ii</scp>) removal from aqueous solutions and rivers water using silica-2-(pyridin-2-ylmethoxy)ethan-1-ol hybrid material

Tighadouini, Saïd; Radi, Smaail; Roby, Othmane; Hammoudan, Imad; Saddik, Rafik; Garcia, Yann; Almarhoon, Zainab M.; Mabkhot, Yahia N.

doi:10.1039/d1ra06640d

Cited by 17 publications

(5 citation statements)

References 78 publications

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“…Kinetic adsorption models describe the mechanism of adsorption of heavy metal ions by biosorbents and particularly determine the rate of biosorption during the removal of heavy metals from wastewater on an industrial scale to optimize the design parameters, including the adsorbate residence time and reactor dimension [67]. In experimental works, the kinetic description of adsorption processes and the removal efficiency of heavy metals by various adsorbents have frequently been evaluated by several mathematical models [68][69][70], most of which are empirical equations [71][72][73]. The common kinetics models (pseudo-first order, pseudo-second order, intra-particle diffusion kinetic, and Elovich), which were used to fit experimental data, are expressed in Table 2.…”

Section: Kinetic Modelsmentioning

confidence: 99%

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Adsorption of Heavy Metals: Mechanisms, Kinetics, and Applications of Various Adsorbents in Wastewater Remediation—A Review

Raji,

Karim,

Karam

et al. 2023

Waste

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Heavy metal contamination in wastewater is a significant concern for human health and the environment, prompting increased efforts to develop efficient and sustainable removal methods. Despite significant efforts in the last few decades, further research initiatives remain vital to comprehensively address the long-term performance and practical scalability of various adsorption methods and adsorbents for heavy metal remediation. This article aims to provide an overview of the mechanisms, kinetics, and applications of diverse adsorbents in remediating heavy metal-contaminated effluents. Physical and chemical processes, including ion exchange, complexation, electrostatic attraction, and surface precipitation, play essential roles in heavy metal adsorption. The kinetics of adsorption, influenced by factors such as contact time, temperature, and concentration, directly impact the rate and effectiveness of metal removal. This review presents an exhaustive analysis of the various adsorbents, categorized as activated carbon, biological adsorbents, agricultural waste-based materials, and nanomaterials, which possess distinct advantages and disadvantages that are linked to their surface area, porosity, surface chemistry, and metal ion concentration. To overcome challenges posed by heavy metal contamination, additional research is necessary to optimize adsorbent performance, explore novel materials, and devise cost-effective and sustainable solutions. This comprehensive overview of adsorption mechanisms, kinetics, and diverse adsorbents lays the foundation for further research and innovation in designing optimized adsorption systems and discovering new materials for sustainable heavy metal remediation in wastewater.

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Section: Kinetic Modelsmentioning

confidence: 99%

“…[ 54,69,71,78] Chickpea Husk Pb 2+ [56] Black tea leaves Pb 2+ [79] Cherry leaves Cr 6+ [80] Pseudo-second order Nonlinear form:…”

mentioning

confidence: 99%

Adsorption of Heavy Metals: Mechanisms, Kinetics, and Applications of Various Adsorbents in Wastewater Remediation—A Review

Raji,

Karim,

Karam

et al. 2023

Waste

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“…We con rmed the active sites by the electrophilic function indices of Parr (Pr+) [45,46]. The transition state theory (TST) developed in 1935 by Eyring is the most widely used theory for calculating reaction rates [47,48], and to locate the structure of the transition state we used qstn [49]. IRC was made to give the reaction path according to the coordinates of the reaction [50].…”

Section: Computational Detailsmentioning

confidence: 99%

Novel quinazolinone-isoxazoline hybrids: synthesis, structural elucidation and theoretical DFT mechanistic study

Rhazi

Chalkha

Nakkabi

et al. 2022

Preprint

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Quinazolinone and isoxazoline systems have attracted more attention due to their interesting pharmacological properties. The association of these two pharmacophores in a single hybrid structure can boost the biological activity or bring a new one. Inspired by this new paradigm, we report in the present work, the synthesis and spectroscopic characterization of a new quinazolinone-isoxazoline hybrids. The target compounds were obtained via 1,3-dipolar cycloaddition reaction of arylnitriloxides and N-allylquinazolinone. The synthesized compounds were characterized using spectroscopic techniques such as: IR, 1D NMR (1H and 13C), 2D NMR (COSY and HSQC), and high-resolution mass spectrometry (HRMS). The spectral data show that this reaction leads only to the 3,5-disubstituted isoxazoline regioisomer and the observed regiochemistry is not affected by the nature of the substituents in the phenyl ring of the dipole. In addition, a theoretical study was performed using the density functional theory (DFT) to support the experimental results regarding the regiochemistry of the studied reactions. The computational mechanistic study is in perfect agreement with experimental data.

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“…Several techniques such as adsorption [4], liquid-liquid extraction [5], membrane filtration [6], ion exchange [7] and electrolysis [8] have been used for the purification of wastewater containing heavy metal ions. Recently, adsorption has emerged as a more promising technique due to: (i) ease of operation, (ii) higher enrichment factor, (iii) reduction of organic solvent usage, low cost and extraction time, (iv) high selectivity, (v) ease of separation and (vi) ability to combine with different modern detection techniques [9]. Various types of materials such as silica [10], activated carbon [11], biopolymers [12], zeolite [13] and clay [14] are successfully employed as effective adsorbents.…”

Section: Introductionmentioning

confidence: 99%

“…In fact, its structure was fully characterized. The new synthetic material shows a high selectivity towards Cu 2+ ions, it also shows a high adsorption capacity compared to other similar adsorbents [9]. The influence of pH value, contact time, metal concentration and temperature for the adsorption of Cu(II) were studied using the batch method.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous Silica Modified with 2-Phenylimidazo[1,2-a] pyridine-3-carbaldehyde as an Effective Adsorbent for Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study

et al. 2022

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In this study, we will present an efficient and selective adsorbent for the removal of Cu(II) ions from aqueous solutions. The silica-based adsorbent is functionalized by 2-phenylimidazo[1,2-a] pyridine-3-carbaldehyde (SiN-imd-py) and the characterization was carried out by applying various techniques including FT-IR, SEM, TGA and elemental analysis. The SiN-imd-py adsorbent shows a good selectivity and high adsorption capacity towards Cu(II) and reached 100 mg/g at pH = 6 and T = 25 °C. This adsorption capacity is important compared to other similar adsorbents which are currently published. The adsorption mechanism, thermodynamics, reusability and the effect of different experimental conditions, such as contact time, pH and temperature, on the adsorption process, were also investigated. In addition, a theoretical study was carried out to understand the adsorption mechanism and the active sites of the adsorbent, as well as the stability of the complex formed and the nature of the bonds.

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Kinetics, thermodynamics, equilibrium, surface modelling, and atomic absorption analysis of selective Cu(ii) removal from aqueous solutions and rivers water using silica-2-(pyridin-2-ylmethoxy)ethan-1-ol hybrid material

Abstract: The removal of heavy metals is attracting considerable attention due to their undesirable effects on the environment.

Cited by 17 publications

References 78 publications

Adsorption of Heavy Metals: Mechanisms, Kinetics, and Applications of Various Adsorbents in Wastewater Remediation—A Review

Adsorption of Heavy Metals: Mechanisms, Kinetics, and Applications of Various Adsorbents in Wastewater Remediation—A Review

Novel quinazolinone-isoxazoline hybrids: synthesis, structural elucidation and theoretical DFT mechanistic study

Mesoporous Silica Modified with 2-Phenylimidazo[1,2-a] pyridine-3-carbaldehyde as an Effective Adsorbent for Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study

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