scholarly journals Organic-Inorganic Hybrid Polymers as Adsorbents for Removal of Heavy Metal Ions from Solutions: A Review

Materials ◽  
2014 ◽  
Vol 7 (2) ◽  
pp. 673-726 ◽  
Author(s):  
Babak Samiey ◽  
Chil-Hung Cheng ◽  
Jiangning Wu
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Hybrid Polymers ◽  
Inorganic Hybrid

Removal of some heavy metal ions from water using novel adsorbent based on iron oxide-doped sol-gel organic-inorganic hybrid nanocomposite: equilibrium and kinetic study

2019 ◽  
Vol 147 ◽  
pp. 173-182 ◽  
Author(s):  
Mehdi Esmaeili Bidhendi ◽  
Mohammad Ali Gabris ◽  
Venus Goudarzi ◽  
Sara Abedynia ◽  
Binta Hadi Juma ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Iron Oxide ◽  
Metal Ions ◽  
Kinetic Study ◽  
Heavy Metal Ions ◽  
Sol Gel ◽  
Hybrid Nanocomposite ◽  
Inorganic Hybrid

scholarly journals Preparation and Heavy Metal Ions Chelating Properties of Multifunctional Polymer-Grafted Silica Hybrid Materials

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Luciana Sartore ◽  
Kamol Dey
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Hybrid Materials ◽  
Heavy Metal Ions ◽  
Solid Phase ◽  
Research Work ◽  
Inorganic Hybrid ◽  
Column Adsorption ◽  
Adsorption Desorption ◽  
Multifunctional Polymers

In this research work, novel hybrid materials based on multifunctional polymers and silica were developed and investigated in view of possible employment as sorbents for removal of heavy metal ions from water in presence of various ions. Organic-inorganic hybrid materials were prepared by covalent bonding of vinyl-terminated polyamidoamine (PAA) onto aminated silica particles. Two series of polyamidoamine-grafted silica, differing in the PAA chemical structure, were synthesized, and their heavy metal ions chelating properties were investigated. Column adsorption procedure for Cu, Zn, and Ni in aqueous solution was successfully established. Moreover, the adsorption behaviour of the materials was evaluated in different ionic strength solutions as well as in distilled and natural water. Organic-inorganic hybrid materials exhibited excellent chelating properties and selectivity for different metal ions. The hybrid columns showed exceptional eluting and regenerating property using diluted hydrochloric acid solution as eluent. In particular, the hybrid materials containing more carboxy groups possessed superior adsorption ability, reusability, and stability. The consecutive adsorption-desorption experiments exhibited that this material could be reused more than 20 cycles without almost any loss of adsorption capability. These new organic-inorganic sorbents appear very promising as an effective solid-phase extraction material for the selective preconcentration or removing of heavy metal ions from the environment.

scholarly journals Investigation on the Adsorption-Interaction Mechanism of Pb(II) at Surface of Silk Fibroin Protein-Derived Hybrid Nanoflower Adsorbent

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1241 ◽  
Author(s):  
Xiang Li ◽  
Yan Xiong ◽  
Ming Duan ◽  
Haiqin Wan ◽  
Jun Li ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Silk Fibroin ◽  
Metal Ion ◽  
Heavy Metal Ions ◽  
Adsorption Mechanism ◽  
Interaction Mechanism ◽  
Adsorption Site ◽  
Inorganic Hybrid ◽  
Adsorption Performance

For further the understanding of the adsorption mechanism of heavy metal ions on the surface of protein-inorganic hybrid nanoflowers, a novel protein-derived hybrid nanoflower was prepared to investigate the adsorption behavior and reveal the function of organic and inorganic parts on the surface of nanoflowers in the adsorption process in this study. Silk fibroin (SF)-derived and copper-based protein-inorganic hybrid nanoflowers of SF@Cu-NFs were prepared through self-assembly. The product was characterized and applied to adsorption of heavy metal ion of Pb(II). With Chinese peony flower-like morphology, the prepared SF@Cu-NFs showed ordered three-dimensional structure and exhibited excellent efficiency for Pb(II) removal. On one hand, the adsorption performance of SF@Cu-HNFs for Pb(II) removal was evaluated through systematical thermodynamic and adsorption kinetics investigation. The good fittings of Langmuir and pseudo-second-order models indicated the monolayer adsorption and high capacity of about 2000 mg g−1 of Pb(II) on SF@Cu-NFs. Meanwhile, the negative values of Δ r G m ( T ) θ and Δ r H m θ proved the spontaneous and exothermic process of Pb(II) adsorption. On the other hand, the adsorption mechanism of SF@Cu-HNFs for Pb(II) removal was revealed with respect to its individual organic and inorganic component. Organic SF protein was designated as responsible ‘stamen’ adsorption site for fast adsorption of Pb(II), which was originated from multiple coordinative interaction by numerous amide groups; inorganic Cu3(PO4)2 crystal was designated as responsible ‘petal’ adsorption site for slow adsorption of Pb(II), which was restricted from weak coordinative interaction by strong ion bond of Cu(II). With only about 10% weight content, SF protein was proven to play a key factor for SF@Cu-HNFs formation and have a significant effect on Pb(II) treatment. By fabricating SF@Cu-HNFs hybrid nanoflowers derived from SF protein, this work not only successfully provides insights on its adsorption performance and interaction mechanism for Pb(II) removal, but also provides a new idea for the preparation of adsorption materials for heavy metal ions in environmental sewage in the future.

scholarly journals Thiophene-Modified CMC/Chitosan Hybrid Polymers for the Removal Metal Ions from Wastewater

2020 ◽  
Vol 10 (2) ◽  
pp. 2191-2201
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Contact Time ◽  
Heavy Metal Ions ◽  
Polymeric Membranes ◽  
Hybrid Polymers

5-Acetyl-4-amino-N-(4-chlorophenyl)-2-(phenylamino)thiophene-3-carboxamide was synthesized and used in CMC and Chitosan modifications to improve their efficiency in removing heavy metal ions from wastewater. The modified polymeric membranes were characterized, and their efficiency was investigated compared to the unmodified membranes in removing the heavy metal ions from their aqueous solutions. The effect of contact time was investigated, and monitoring of the change in pH during treatment was carried out. For heavy metal ions, the copper (II) ion was selected as a representative example, and its concentration was determined by ICP spectrometry.

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