Removal of Ag+ from water environment using a novel magnetic thiourea-chitosan imprinted Ag+

Fan, Lulu; Luo, Chuannan; Lv, Zhen; Lü, Fang; Qiu, H.

doi:10.1016/j.jhazmat.2011.07.080

Cited by 162 publications

(47 citation statements)

References 48 publications

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“…28 Fan et al developed thioureachitosan coating on the surface of magnetite (Fe 3 O 4 ) for the adsorption and removal of Ag(I) ions from aqueous solutions. 29 Wang et al designed thiourea-modified chitosan resin and used it as effective adsorbent for the recovery of Ag1 from aqueous solution. 30 It was demonstrated that the adsorption performance of these adsorbents was enhanced to some extent owing to their strong complexation interaction with heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

Thiourea modified hyper‐crosslinked polystyrene resin for heavy metal ions removal from aqueous solutions

Yang

Huang

Yao

et al. 2017

J of Applied Polymer Sci

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A hyper-crosslinked resin chemically modified with thiourea (TM-HPS) was synthesized, characterized, and evaluated for the removal of heavy metal ions (Pb 21 , Cd 21 , and Cu 21 ) from aqueous solutions. The structural characterization results showed that a few thiourea groups were grafted on the surface of the resin with a big BET surface area and a large number of narrow micropores.Various experimental conditions such as pH, contact time, temperature, and initial metal concentration of the three heavy metal ions onto TM-HPS were investigated systematically. The results indicated that the prepared resin was effective for the removal of the heavy metal ions from aqueous solutions. The isotherm data could be better fitted by Langmuir model, yielding maximum adsorption capacities of 689.65, 432.90, and 290.69 mg/g for Pd 21 , Cd 21 , and Cu 21 , respectively. And the adsorption kinetics of the three metal ions followed the pseudo-second-order equation. FTIR and XPS analysis of TM-HPS before and after adsorption further revealed that the adsorption mechanism could be a synergistic effect between functional groups and metal ions and electrostatic attraction, which may provide a new insight into the design of highly effective adsorbents and their potential technological applications for the removal of heavy metal ions from aqueous solutions.

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Section: Introductionmentioning

confidence: 99%

Thiourea modified hyper‐crosslinked polystyrene resin for heavy metal ions removal from aqueous solutions

Yang

Huang

Yao

et al. 2017

J of Applied Polymer Sci

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“…Table 4 lists the most representative isotherm and kinetic equations used for describing the adsorption of water pollutants. The Langmuir equation [47] derives from an isotherm model commonly applied to describe the equilibrium of sorption on magnetic bionanocomposites [60,40,81,102,14,104,59,98,94,26]. This empirical model assumes monolayer adsorption at a finite number of sites that are identical and equivalent, without any interaction between molecules adsorbed on adjacent sites.…”

Section: Modeling the Adsorption Processmentioning

confidence: 99%

“…The best interpretation for the equilibrium data was given by a Langmuir isotherm, and the maximum adsorption capacities were 625.2, 66.7 and 15.3 mg/g for Hg(II), Cu(II), and Ni(II) ions, respectively. Fan et al [26] prepared magnetite thiourea-chitosan composites using Ag(I) as an imprinted ion and were able to show that this resin is strongly selective for the adsorption of Ag(I) over Cd(II), Zn(II), Pb(II), and Cu(II). The equilibrium adsorption was achieved within 50 min and the maximum adsorption capacity was 4.93 mmol/g observed at pH 5 and temperature 30°C.…”

Section: Removal Of Metal Ionsmentioning

confidence: 99%

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Bionanocomposites for Magnetic Removal of Water Pollutants

Sousa

Daniel‐da‐Silva

Silva

et al. 2015

Advanced Structured Materials

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Magnetic separation in water remediation processes is of great interest in current environmental technologies. An important aspect in this field has been the development of efficient sorbents for water purification units, namely by exploiting other functionalities that might originate more sustainable technologies. This chapter describes the state-of-art on the chemical preparation of magnetic sorbents comprising inorganic particles and biopolymer matrices. Fundamental aspects related to nanoparticle synthesis of iron oxides and nanomagnetism will be first addressed. The use of these particles in biopolymers matrices such as polysaccharides will be then reviewed as an innovative strategy aiming at production of eco-friendly sorbents for magnetic separation.

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“…A lot of chitosan material template ion have been synthesized to adsorption convenient metal ion from aqueous solution, enhancing adsorption capacity. The selectivity of crosslinked template adsorbent is based on specification of ligand, coordination geometry, coordination number, charge and size of the metal ion 24,25 .…”

Section: Introductionmentioning

confidence: 99%

Preparation of Pb(II)-Carboxymethyl Chitosan Pec PEGDE Film as Selective Asorbent for Removal Pb(II) Ion

Hastuti¹,

Mudasir²,

Siswanta³

et al. 2017

Orient. J. Chem

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The aims of this research is to synthesize Pb(II)-Carboxymethyl Chitosan-Pectin crosslinked Polyethylene Glycol Diglisidyl Ether (Pb(II)-CCPecP) film by using templated ion of Pb 2+ as selective adsorbent for Pb(II) ion. The structure of Pb(II)-CCPecP film adsorbent were characterized by FT-IR and scanning electron microscopy (SEM). The adsorption properties of Pb(II)-CCPecP film adsorbent in order to adsorp of Pb(II) ion in presence Cu(II) and Zn(II) were evaluated. FT-IR showed visible peak at 3441 and 1628 cm -1 indicate the film adsorbent have -COOH and -OH active group. The SEM of Pb(II)-CCPecP film show smoother surface and some holes and gaps are formed. The optimum condition for adsorption of Pb(II) ions by Pb(II)-CCPecP film adsorbent was occur at pH 5 and 200 min contacting time. The adsorption of Pb(II)-CCPecP film adsorbent toward Pb 2+ was higher compared with Zn 2+ and Cu 2+ metal ion. The results revealed that the film was capable to removal of Pb(II) ion selectively in solution containing single metal ion or coexistence of three metals ion of Zn 2+ and Cu 2+ .

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Removal of Ag+ from water environment using a novel magnetic thiourea-chitosan imprinted Ag+

Cited by 162 publications

References 48 publications

Thiourea modified hyper‐crosslinked polystyrene resin for heavy metal ions removal from aqueous solutions

Thiourea modified hyper‐crosslinked polystyrene resin for heavy metal ions removal from aqueous solutions

Bionanocomposites for Magnetic Removal of Water Pollutants

Preparation of Pb(II)-Carboxymethyl Chitosan Pec PEGDE Film as Selective Asorbent for Removal Pb(II) Ion

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