The Adsorption Behavior of Functional Particles Modified by Polyvinylimidazole for Cu(II) Ion

Wang, Ruixin; Men, Jiying; Gao, Baojiao

doi:10.1002/clen.201000493

Cited by 15 publications

(13 citation statements)

References 25 publications

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“…Therefore, adsorption increases again when the pH value is >6, which can be explained by precipitating copper ions in solution. Some previous reports have shown similar results for Cu 2+ adsorption .…”

Section: Resultssupporting

confidence: 81%

Competitive Adsorption of Methylene Blue and Cu²⁺ onto Citric Acid Modified Pine Sawdust

Zhang

Zhou

et al. 2014

CLEAN Soil Air Water

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Pine sawdust modified with citric acid (CA‐PS) is used as an adsorbent for the removal of Cu2+ and methylene blue (MB) from the single and binary compound systems. The initial pH has a significant effect on Cu2+ adsorption, but a relatively little effect on MB adsorption. The kinetic and isotherm studies indicate that the pseudo‐second‐order model and the generalized model provide the best correlation of the experimental data in the single systems as well as in the binary systems. The adsorption capacities of CA‐PS from Generalized isotherm model are 0.23 mmol/g for Cu2+ and 0.25 mmol/g for MB, which are higher than that of B‐PS. In the binary systems, Cu2+ and MB exhibit competitive adsorption behaviors. The adsorption capacity of Cu2+ or MB is considerably reduced with an increase in the concentration of the other, and Cu2+ exhibits better competiveness than MB. However, the total adsorption capacity is higher compared with that in the single systems, which increases with an increase in the initial concentration of Cu2+ or MB and reaches a plateau value of 0.301 mmol/g.

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Section: Resultssupporting

confidence: 81%

Competitive Adsorption of Methylene Blue and Cu²⁺ onto Citric Acid Modified Pine Sawdust

Zhang

Zhou

et al. 2014

CLEAN Soil Air Water

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“…In addition, the presence of various amines and imidazole with specific metal binding capacities along the same polymer backbone opens new opportunities notably in the field of water purification. 52,53 Previous studies also evidenced the antibacterial properties of PVAm derivatives 54 and …”

Section: Resultsmentioning

confidence: 91%

Far beyond primary poly(vinylamine)s through free radical copolymerization and amide hydrolysis

et al. 2016

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Due to their affinity for many supports, their pH responsiveness, metal binding capacity and polyelectrolytes complexation, poly(vinylamine) derivatives have attracted attention for many applications including coatings, water purification, or gas membrane separation. Nevertheless, most of them possess only pendant primary amines despite the possible benefits of incorporating different amino groups along the chain. In this work, a straightforward and scalable synthesis route towards polymers bearing primary and secondary amines, as well as imidazole groups, is reported. The general strategy relies on the radical copolymerization of different vinylamides and vinyl imidazole followed by the hydrolysis of the resulting poly(vinylamide) derivatives. Binary and ternary free radical copolymerizations of Nvinylacetamide (NVA), N-methyl vinylacetamide (NMVA) and 1-vinylimidazole (VIm) were investigated and the reactivity ratios for each copolymerization system were determined. Thanks to these values a series of statistical copolymers with predictable composition and low deviation over the chain distribution could then be synthesized. Finally, the acidic hydrolysis of the acetamide functions towards the corresponding amine was performed and optimized. Copolymers containing various pendant amino groups and with low dispersity in the chain composition could be obtained, which opens new perspectives for the above mentioned applications.polyvinylimidazole 55 , as well as the dependence of the antimicrobial efficiency on the charge density and hydrophobicity. 54 Finally, these novel polyamines might also outperform primary PVAm in applications like paper strengthening or coating applications 9-11 . In other words, much can be expected from this poly(vinylamine) based synthetic platform. Notes and references

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“…The adsorption process has proven as the best water treatment technology because of high efficiency, rapid phase separation, and low consumption of organic solvents. Many substances have been applied as solid-phase extractors including activated carbon, silica gel, ion-exchange resins, polymers, and other adsorbents [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of Solvent‐Free Microwave Assisted Nanosilica‐Functionalized Carboxylic Acids for the Removal of Cobalt (II) from Water

Mahmoud

Yakout

Elserw

et al. 2016

CLEAN Soil Air Water

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Nanosilica (NSi) was functionalized by oxalic acid (NSi-Ox) and tartaric acid (NSi-Tar) using solvent-free microwave-assisted approach. The two surface-modified NSi sorbents were characterized by Fourier transform infrared, scanning electron microscopy, transmission electron microscopy, and thermal gravimetric analysis. NSi-Ox and NSi-Tar sorbents were examined for the removal of Co(II) from aqueous solutions by the batch adsorption technique. Removal of Co(II) was carried out at different controlling parameters such as pH, contact time, sorbent mass, and interfering ions. The maximum Co(II) uptake values were identified as 733.3 and 1026.7 mmol g À1 for NSi-Ox and NSi-Tar, respectively, and these were higher than the identified value by NSi sorbent (440 mmol g À1 ). This trend is mainly due to the surface functionalization with several active groups. The adsorption isotherms were evaluated using Langmuir and Freundlich models and the results were better fitted to the Langmuir model (R 2 ¼ 0.983 and 0.989 for NSi-Ox and NSi-Tar, respectively). Kinetic studies were performed and the experimental data were found in good agreement with the pseudosecond-order model. The thermodynamic parameters were also determined. The potential applications of NSi sorbents for removal of Co(II) from drinking tap water and sea water samples were successfully achieved using microcolumn studies.

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The Adsorption Behavior of Functional Particles Modified by Polyvinylimidazole for Cu(II) Ion

Cited by 15 publications

References 25 publications

Competitive Adsorption of Methylene Blue and Cu²⁺ onto Citric Acid Modified Pine Sawdust

Competitive Adsorption of Methylene Blue and Cu²⁺ onto Citric Acid Modified Pine Sawdust

Far beyond primary poly(vinylamine)s through free radical copolymerization and amide hydrolysis

Adsorption Behavior of Solvent‐Free Microwave Assisted Nanosilica‐Functionalized Carboxylic Acids for the Removal of Cobalt (II) from Water

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The Adsorption Behavior of Functional Particles Modified by Polyvinylimidazole for Cu(II) Ion

Cited by 15 publications

References 25 publications

Competitive Adsorption of Methylene Blue and Cu2+ onto Citric Acid Modified Pine Sawdust

Competitive Adsorption of Methylene Blue and Cu2+ onto Citric Acid Modified Pine Sawdust

Far beyond primary poly(vinylamine)s through free radical copolymerization and amide hydrolysis

Adsorption Behavior of Solvent‐Free Microwave Assisted Nanosilica‐Functionalized Carboxylic Acids for the Removal of Cobalt (II) from Water

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Product

Resources

About

Competitive Adsorption of Methylene Blue and Cu²⁺ onto Citric Acid Modified Pine Sawdust

Competitive Adsorption of Methylene Blue and Cu²⁺ onto Citric Acid Modified Pine Sawdust