Removal of heavy metal ions from an aqueous solution by CS/PVA/PVP composite hydrogel synthesized using microwaved-assisted irradiation

Tassanapukdee, Yosthanase; Prayongpan, Pornpimol; Songsrirote, Kriangsak

doi:10.1016/j.eti.2021.101898

Cited by 40 publications

(15 citation statements)

References 68 publications

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“…This characteristic significantly enhances the interaction of the Schiff base with metal cations, facilitating strong coordination and bonding between the ligand and the metal ions 48 . In addition to the interaction between the incorporated thiosemicarbazone ligand and the metals, the metal affinity order, which is mercury(II) > lead(II) > silver(I), seems to be in accordance with a decreasing ionic radius: Hg(II) (1.02 Å), Pb(II) (1.19 Å), to Ag(I) (1.26 Å) 49,50 …”

Section: Resultsmentioning

confidence: 98%

Tailored Zeolitic Imidazolate Framework (TSC‐ZIF) for water purification: Evaluating TSC‐ZIF affinity towards heavy metal ions in multi‐metal solutions

Jaafar,

Youness,

Bilbeisi

2023

Applied Organom Chemis

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In response to the growing concerns surrounding water pollution and the presence of multiple metal ions in environmental matrices, we conducted a comprehensive study to explore the potential of a thiosemicarbazone Schiff base in the Zeolitic Imidazolate Framework (TSC‐ZIF‐1) as an efficient adsorbent for removing harmful metal ions from aqueous solutions. Our investigation assessed the adsorption capacity and efficiency of TSC‐ZIF 1 towards three key metal ions—Hg(II), Ag(I), and Pb(II)—in homo‐ionic, tertiary, and multi‐metal ion systems. TSC‐ZIF 1 exhibited unprecedented adsorption behavior towards all three metal ions in the homo‐ionic system, with the Langmuir isotherm models fitting well (R2 ~ 0.98 to 0.99). The maximum adsorption capacities were found to be 1,667 mg/g for Hg(II), as previously reported; 285 mg/g for Ag(I); and 769 mg/g for Pb(II); these values serve as baseline values. Subsequently, we conducted a comparative analysis for a tertiary system, Hg(II)/Ag(I)/Pb(II), where the three metals co‐existed in one solution. The adsorption capacity for each metal ion was reduced to varying extents; notably, the adsorption capacity for Pb(II) experienced the most significant reduction, reaching a qm value of 57 mg/g, representing an ~93% decrease compared to the homo‐ionic metal system. Conversely, the adsorption capacity for Ag(I) exhibited a minor decrease of ~3%. Despite a decrease in the adsorption capacity for Hg(II) by approximately 34%, the removal capacity remains the highest among the other metals. Our investigation of the competitive adsorption among the metal ions in the Hg(II)/Ag(I)/Pb(II) system revealed an antagonistic effect, indicating strong adsorption competition for available sites on TSC‐ZIF 1. When extending this study to a more complex multi‐metal ion system containing six metal ions, TSC‐ZIF 1 exhibited high selectivity (higher than 60% removal) towards Hg(II), Ag(I), and Pb(II) in a multi‐ionic system, including Hg(II), Ag(I), Pb(II), Cd(II), Ni(II), and Mg(II).

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Section: Resultsmentioning

confidence: 98%

Tailored Zeolitic Imidazolate Framework (TSC‐ZIF) for water purification: Evaluating TSC‐ZIF affinity towards heavy metal ions in multi‐metal solutions

Jaafar,

Youness,

Bilbeisi

2023

Applied Organom Chemis

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“…The peaks at ca. 1,080 and 845 cm −1 belonged to C−O and C−C stretching vibrations, [84] respectively. The results revealed that the surface of the synthesized AgNPs was abundantly covered by oxygen‐containing functional groups from the OKR and TSC.…”

Section: Resultsmentioning

confidence: 99%

Manganese Detection in Water Samples via Photometrix Colorimetric Analysis on Smartphones, by using Silver Nanoparticles Prepared from Okara Extract

Panjina,

Rawat,

Seedad

et al. 2024

ChemistrySelect

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Soybean residue (okara) extract combined with trisodium citrate was applied as reducing and stabilizing agents for the green synthesis of silver nanoparticles (AgNPs). Okara contained large quantities of biomolecules affecting the property of the synthesized AgNPs as a detection sensor. This work presented the application of the AgNPs as a colorimetric probe for Mn2+ detection. A free mobile application called PhotoMetrix that can be downloaded onto smartphones was developed for a color analysis. The developed approach provided a linearity range for Mn2+ detection of 0.025–5.0 ppm with the limit of detection and limit of quantification of 0.01 and 0.03 ppm, respectively, under optimal conditions. The reaction time was 9 minutes with no need for pH adjustment. The developed method was applied for Mn2+ determination in filtered water samples, and the results were in good agreement with the standard method, atomic absorption spectroscopy. The binding sites of interaction between molecular functional groups surrounding the surface of AgNPs and Mn2+ ions were characterized to elucidate the detection selectivity, and it was found that carbonyl and hydroxyl groups were key to the sensor activity.

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“…Researchers have come up with various hydrogel-based water treatment processes for the removal of metal ions, such as Co, Cr, Fe, Mn, Ni, Zn, and so forth, but these are not very effective in removing pesticides from water. 37 DESs as an alternative to ILs could be utilized in these processes to achieve a higher efficiency in pesticide removal along with cost optimization, which could immensely help in developing a sustainable approach in water treatment processes. HDES developed between the sodium salt of fatty acid and another fatty acid forms a hydrogel when mixed with water.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Additionally, the arduous purification and recovery/recycling processes of ILs are quite a hindrance to the effective removal of pesticides from water sources. Researchers have come up with various hydrogel-based water treatment processes for the removal of metal ions, such as Co, Cr, Fe, Mn, Ni, Zn, and so forth, but these are not very effective in removing pesticides from water …”

Section: Introductionmentioning

confidence: 99%

Study on the Extraction of Acetamiprid and Imidacloprid from an Aqueous Environment Using Menthol-Based Hydrophobic Eutectic Solvents: Quantum Chemical and Molecular Dynamics Insights

Paul

Banerjee

2022

ACS Sustainable Chem. Eng.

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The current work reports on molecular dynamics (MD) and quantum chemical (QC) calculations for two pesticide systems through extraction from an aqueous environment. Two separate deep eutectic solvents (DESs) consisting of DL-menthol as a hydrogen bond acceptor (HBA) and two carboxylic acids (octanoic acid and dodecanoic acid) as hydrogen bond donors (HBDs) at 298.15 K temperature and atmospheric pressure were adopted in our studies. The nonbonded interaction energy; radial, combined, and spatial distribution functions; and hydrogen bonding extent of various components were obtained via MD simulations that highlighted the enhanced and favorable interactions of the DES components with pesticides as compared to water. Further, transport properties, such as the mean squared displacement and diffusivity of compounds within the phases, were evaluated with the help of Einstein's diffusivity equation to obtain the affinity of the pesticides, namely, acetamiprid and imidacloprid, toward the DES-rich phase. The extractive characteristics of pesticides, such as the distribution coefficient (β), selectivity (S), and extraction efficiency (% EE), were calculated from the simulation and were fitted with the experimental data. The β values obtained by simulation were 8.67 and 6.25, respectively, and S values were 102.38 and 71.86 for acetamiprid and imidacloprid systems, respectively. Within QC, the charge-transfer (CT) process confirmed the direction of CT from DES to the pesticide, and the NBO analysis established the stable character of both the DESs. A slight increase in the O (HBA)•••H (HBD) distance confirmed the increased interaction between the DES and the pesticide. The DES−pesticide optimized clusters confirmed the interactions between the pesticide and the DES at a distance ranging from 2.896 to 3.77 Å for imidacloprid and from 1.724 to 2.03 Å for acetamiprid, which are validated by MD simulations. The highest occupied molecular orbital−lowest unoccupied molecular orbital studies displayed the active sites involved in CT and interactive operations. This was confirmed by the structural findings of the MD simulation, which were initially validated by the experimental results.

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Removal of heavy metal ions from an aqueous solution by CS/PVA/PVP composite hydrogel synthesized using microwaved-assisted irradiation

Cited by 40 publications

References 68 publications

Tailored Zeolitic Imidazolate Framework (TSC‐ZIF) for water purification: Evaluating TSC‐ZIF affinity towards heavy metal ions in multi‐metal solutions

Tailored Zeolitic Imidazolate Framework (TSC‐ZIF) for water purification: Evaluating TSC‐ZIF affinity towards heavy metal ions in multi‐metal solutions

Manganese Detection in Water Samples via Photometrix Colorimetric Analysis on Smartphones, by using Silver Nanoparticles Prepared from Okara Extract

Study on the Extraction of Acetamiprid and Imidacloprid from an Aqueous Environment Using Menthol-Based Hydrophobic Eutectic Solvents: Quantum Chemical and Molecular Dynamics Insights

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