Kinetic and equilibrium investigation of Cu(II) removal by Co(II)-doped iron oxide nanoparticle-immobilized in PVA–alginate recyclable adsorbent under dark and photo condition

Wong, Ee Ting; Chan, Kian Hwa; Idris, Ani

doi:10.1016/j.cej.2015.01.078

Cited by 16 publications

(2 citation statements)

References 61 publications

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“…Poly (vinyl alcohol) (PVA) is a widely used polymer with good biocompatibility, non-toxicity, high mechanical strength, thermal stability, pH stability, and low cost. Composite materials of gelatin and PVA have good adsorption capacities for heavy metals [ 23 , 24 ]. Hui et al [ 6 ] prepared PVA/gelatin hydrogel beads for Pb(II) removal, and the maximum adsorption capacity of Pb(II) was 211.86 mg/g and the adsorption capacity remained stable in four sequential adsorption–desorption cycles.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Cu(II) and Zn(II) Ions from Aqueous Solution by Gel/PVA-Modified Super-Paramagnetic Iron Oxide Nanoparticles

Anudari

Yin

et al. 2018

Molecules

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Super-paramagnetic iron oxide nanoparticles (SPIONs)/gelatin (gel)/polyvinyl alcohol (PVA) nanoparticles were designed and synthesized by the co-precipitation method and further modified with gel and PVA. These nanoparticles were used for the removal of Cu(II) and Zn(II) from aqueous solutions. The adsorbents were rich in different functional groups for chemisorption and showed effective adsorption properties. The adsorption of Cu(II) and Zn(II) on the SPIONs/gel and SPIONs/gel/PVA materials were investigated with respect to pH, adsorption kinetics, and adsorption isotherms. The adsorption data was fitted to the Langmuir, Freundlich, and Sips models at the optimum pH 5.2 (±0.2) over 60 min; SPIONs/gel showed maximum adsorption capacities of 47.594 mg/g and 40.559 mg/g for Cu(II) and Zn(II); SPIONs/gel/PVA showed those of 56.051 mg/g and 40.865 mg/g, respectively. The experimental data fitted the pseudo-second-order model, indicating that the process followed chemical monolayer adsorption. In addition, the SPIONs/gel/PVA showed better stability and Cu(II) adsorption efficiency than SPIONs/gel.

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Section: Introductionmentioning

confidence: 99%

Adsorption of Cu(II) and Zn(II) Ions from Aqueous Solution by Gel/PVA-Modified Super-Paramagnetic Iron Oxide Nanoparticles

Anudari

Yin

et al. 2018

Molecules

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“…Cathodic metal deposition is the principle method that leads to the removal of metal ions (Me z+ ) from waste waters [33,34].…”

Section: Introductionmentioning

confidence: 99%

Urban Mining and Electrochemistry: Cyclic Voltammetry Study of Acidic Solutions from Electronic Wastes (Printed Circuit Boards) for Recovery of Cu, Zn, and Ni

Reyes-Valderrama

Salinas‐Rodríguez

Montiel‐Hernández

et al. 2017

Metals

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Abstract:We report potentiodynamic studies to characterize copper, nickel and zinc leaching solutions from electronic waste. The metals were leached using oxygen and sulfuric acid (pH = 1.5). As is known, reduction potentials are determined using thermodynamics laws, and metal recovery strategies from electronic waste are usually considered according these thermodynamic values. Pourbaix-type diagrams are not appropriate to plan strategies in electrochemical processing. Therefore, knowledge of electrode potentials for the metal deposit/dissolution process is the basis for the selective recovery planning. For this reason, potentiodynamic studies, specifically cyclic voltammetry, are revealed as a good way to decide the best conditions for the process of electrochemical recovery of metals from electronic waste, which is also cost-efficient and has no interference from strange ions, such as lead, in this case.

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Large Scale Synthesis Poly(Acrylamide)/Soluble Glass Porous Composites (SGAP) with Three-Dimensional Interpenetrating Network Structure for Enhanced Adsorption of Cu2+

Zhao

2016

J Polym Environ

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Kinetic and equilibrium investigation of Cu(II) removal by Co(II)-doped iron oxide nanoparticle-immobilized in PVA–alginate recyclable adsorbent under dark and photo condition

Cited by 16 publications

References 61 publications

Adsorption of Cu(II) and Zn(II) Ions from Aqueous Solution by Gel/PVA-Modified Super-Paramagnetic Iron Oxide Nanoparticles

Adsorption of Cu(II) and Zn(II) Ions from Aqueous Solution by Gel/PVA-Modified Super-Paramagnetic Iron Oxide Nanoparticles

Urban Mining and Electrochemistry: Cyclic Voltammetry Study of Acidic Solutions from Electronic Wastes (Printed Circuit Boards) for Recovery of Cu, Zn, and Ni

Large Scale Synthesis Poly(Acrylamide)/Soluble Glass Porous Composites (SGAP) with Three-Dimensional Interpenetrating Network Structure for Enhanced Adsorption of Cu2+

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