Enhanced selective removal of Cu(II) from aqueous solution by novel polyethylenimine-functionalized ion imprinted hydrogel: Behaviors and mechanisms

Wang, Jingjing; Li, Zhengkui

doi:10.1016/j.jhazmat.2015.06.043

Cited by 135 publications

(48 citation statements)

References 69 publications

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“…5B still suggest that at both low and high DE solid loadings reasonably good coverage of particles' surface with GA-crosslinked PEI was achieved. (formation of N-Cu(II) complexes) seems to be the main binding mechanism not affected by the solution ionic strength [42] Based on the TGA results, neglecting any contribution to the mass of the modification from GA, assuming a monomer MW of PEI of 44 g/mol and using the molecular weight of copper, the N:Cu ratio is calculated to be 12. This number is, however, larger than the true ratio, as the films are highly cross-linked with non-nitrogen containing GA.…”

Section: Effect Of Dispersion Solid Loading On De Surface Coverage Wimentioning

confidence: 99%

Polyethyleneimine functionalized mesoporous diatomite particles for selective copper recovery from aqueous media

Nosrati

Larsson

Lindén

et al. 2017

International Journal of Mineral Processing

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Section: Effect Of Dispersion Solid Loading On De Surface Coverage Wimentioning

confidence: 99%

Polyethyleneimine functionalized mesoporous diatomite particles for selective copper recovery from aqueous media

Nosrati

Larsson

Lindén

et al. 2017

International Journal of Mineral Processing

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“…Therefore, they are highly accessible, due to the electron-donor pair with favorable Cu 2+ chelation [50]. Therefore, larger Cu 2+ adsorption capacity can be seen at pH = 6 when taking into account that the copper uptake mechanism most likely occurs through deprotonated primary groups [51], indicating the higher sorption of the Cu 2+ . At lower pH (pH < 6), the adsorption capacity is almost constant (~60 mg·g −1 ).…”

Section: Resultsmentioning

confidence: 99%

Efficient Copper Removal from an Aqueous Anvironment using a Novel and Hybrid Nanoadsorbent Based on Derived-Polyethyleneimine Linked to Silica Magnetic Nanocomposites

et al. 2019

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Due to the extreme rise of sludge pollution with heavy metals (e.g. copper), the options for its disposal or treatment are decreasing. On the contrary, properly heavy metal-cleaned sludge can be used as an alternative sustainable energy and agriculture source. The aim of this study was to develop a novel nanoadsorbent, based on irreversibly linked amino-rich polymer onto previously silica-coated magnetic nanoparticles (MNPs) that can be applied efficiently for metal removal. MNPs were coated uniformly by 3 nm thick silica layer (core-shell structure), and were additionally modified with systematic covalent attachment of derived branched polyethyleneimine (bPEI). The formed structure of synthesized MNPs composite was confirmed with several analytical techniques. Importantly, nanoadsorbents exhibit high density of chelating amino groups and large magnetic force for easier separation. The importance of introduced bPEI, effect of pH, initial heavy metal concentration onto copper uptake efficiency and, further, nanoadsorbent regeneration, were studied and explained in detail. The adsorption isotherm was well fitted with Langmuir model, and the maximum adsorption capacity was shown to be 143 mg·g1 for Cu2+. The reusability and superior properties of silica-coated MNPs functionalized with derived-bPEI for copper adsorption underlie its potential for the removal application from heavy metals contaminated sludge.

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“…Wang et al [5] achieved selective adsorption of Cu(II) through nitrogen-containing groups and chelation oxygen-containing groups of a novel polyethyleneimine-functionalized ion-imprinted hydrogel (Cu(II)-p(PEI/HEA)) on the Cu(II) adsorption capacity and adsorption selectivity are good. The maximum adsorption capacity for Cu(II) was 40.00 mg/g, and the selectivity coefficients of ion-imprinted hydrogel for Cu(II)/Pb(II), Cu(II)/Cd(II) and Cu(II)/Ni(II) were 55.09, 107.47 and 63.12, respectively, which were 3.93, 4.25 and 3.53 times greater than those of non-imprinted hydrogel, respectively.…”

Section: B Ion Imprinted Materialsmentioning

confidence: 99%

Research Progress in the Selective Adsorption of Removal of Heavy Metal Ions from Wastewater

Ma¹,

Xie²,

Yu³

et al. 2017

Proceedings of the 2nd 2016 International Conference on Sustainable Development (ICSD 2016)

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Abstract-Toxic heavy metals in water have been a serious hazard human beings health and eco-environment. However, these heavy metals are usually important natural resources. How separate them from polluted water and reuse them, which is a hot issue in environmental protection field. Adsorption is widely used in the removal of heavy metal ions from Wastewater due to stable, reliable, simple, low energy consumption, low secondary pollution, recycling. Selective adsorption is preparing corresponding adsorbing materials or setting certain solution conditions, according to the different characteristics of heavy metals, such as electronegativity, degree of confusion and ion bound state, so as to separate heavy metal ions from wastewater. Selective adsorption has outstanding advantages in the separation and recovery of heavy metals. Research progress in selective adsorption of heavy metals in recent years is summarized. And the research progress of ion exchange resin and ion imprinted material in selective adsorption of heavy metals is Focused on.

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Enhanced selective removal of Cu(II) from aqueous solution by novel polyethylenimine-functionalized ion imprinted hydrogel: Behaviors and mechanisms

Cited by 135 publications

References 69 publications

Polyethyleneimine functionalized mesoporous diatomite particles for selective copper recovery from aqueous media

Polyethyleneimine functionalized mesoporous diatomite particles for selective copper recovery from aqueous media

Efficient Copper Removal from an Aqueous Anvironment using a Novel and Hybrid Nanoadsorbent Based on Derived-Polyethyleneimine Linked to Silica Magnetic Nanocomposites

Research Progress in the Selective Adsorption of Removal of Heavy Metal Ions from Wastewater

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