Enrichment and separation of silver from waste solutions by metal ion imprinted membrane

Wang, Xiaowei; Zhang, Liang; Ma, Chao; Song, Renyuan; Hou, Hongbin; Li, Dongliang

doi:10.1016/j.hydromet.2009.10.006

Cited by 67 publications

(29 citation statements)

References 15 publications

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“…Ion imprinting for the cross-linked CS adsorbent proposed by Shawky et al [86] overcame this problem. The aforesaid authors used Ag Another study involving CS was proposed by Wang et al [87], however, in this work, CS was used blended with PVA, in order to obtain a film-forming material, the metal ion-imprinted membrane (IIM) was prepared using silver ions as templates (Ag (I)-IIM). The adsorption capacity of Ag(I)-IIM for Ag(I) is stronger than other ions.…”

Section: +mentioning

confidence: 99%

Molecularly Imprinted Membranes

2009

Advanced Topics in Science and Technology in China

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Although the roots of molecularly imprinted polymers lie in the beginning of 1930s in the past century, they have had an exponential growth only 40-50 years later by the works of Wulff and especially by Mosbach. More recently, it was also proved that molecular imprinted membranes (i.e., polymer thin films) that show recognition properties at molecular level of the template molecule are used in their formation. Different procedures and potential application in separation processes and catalysis are reported. The influences of different parameters on the discrimination abilities are also discussed.

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Section: +mentioning

confidence: 99%

Molecularly Imprinted Membranes

2009

Advanced Topics in Science and Technology in China

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“…[1][2][3][4] It is an important ion in some drugs like silver sulfadiazine cream that has been a standard treatment for burns over the past decades and silver deposition has been found in the skin, gingiva, cornea, liver, and kidney of patients. 5,6 It is reported that the concentration of silver(I) cation in water higher than 0.17 µg L -1 is toxic to fish and microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Selective Transport of Silver(I) Cation Across a Bulk Liquid Membrane Containing Bis-β-enamino Ester as Ion Carrier

Tarahomi

Rounaghi

Daneshvar

et al. 2016

Journal of the Brazilian Chemical Society

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Facilitated transport of silver(I) cation across a bulk liquid membrane by two synthesized ligands, bis-β-enamino ester (BBEE) and bis(benzoic acid) trioxaheptane (BBAT), as carriers dissolved in dichloromethane has been investigated. BBEE was used as a specific ion carrier for the transport of silver(I) ion. The influence of experimental parameters affecting the transport efficiency of silver(I) ion have been studied. In the presence of thiosulfate as a suitable metal ion acceptor in the receiving phase and picrate ion as ion pairing agent in the source phase, the amount of silver(I) ion transported across the liquid membrane after 120 min was found to be 97%. Tolerance to the presence of different ions was investigated and it was found that silver(I) cation transport was not affected even in the presence of 10-fold concentration of these metal cations in solution. This system was applied for the recovery of silver(I) cation from silver plating and photographic waste solution.

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“…Although the use of cross-linking agent can improve the dissolution properties of CTS, the adsorption capacity generally decreases with increasing in the extent of cross-linking [4]. Researchers have prepared cross-linked metal-complexed CTS using a metal cation as a template (an imprinted technology) and then removed the template ion to overcome the above problem [4][5][6]. In addition, the resins with the imprinted technology have good selectivity and maximum adsorption capacity, which is also a benefit to recycling value metals.…”

Section: Introductionmentioning

confidence: 99%

“…It has been reported that CTS may potentially be miscible with PVA by hydrogen bonds [5,14,16]. The blends have good mechanical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

“…The blends have good mechanical and chemical properties. Furthermore, the blends have been applied for the adsorption of heavy metal ions [3,5] and dye [17]. Magnetic separation has been one of the promising ways for an environmental purification technique because of producing no contaminants such as flocculants and having capability of treating a large amount of wastewater within a short time [3,[9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of Ni(II) ion on Ni(II) ion-imprinted magnetic chitosan/poly(vinyl alcohol) composite

et al. 2015

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Magnetic chitosan/poly(vinyl alcohol)/Ni(II) beads (m-CTS/PVA/Ni(II)s) were prepared by blending CTS, PVA, Ni(II), and Fe 3 O 4 . Ni(II)-imprinted m-CTS/PVA beads (Ni(II)-IMCPs) were obtained by eluting Ni(II) ions from the m-CTS/PVA/Ni(II)s. The optimal conditions for preparing Ni(II)-IMCPs are 2.0 % (w/w) for CTS, 1.5 % (w/w) for PVA, 0.8 % (w/w) for Ni (NO 3 ) 2 , and 2.0 % (w/w) for Fe 3 O 4 . The Fourier transform infrared spectroscopy (FT-IR) analysis implies that the coordinating atoms may be N atom of -NH 2 in chitosan and O atom of -OH in poly(vinyl alcohol). The X-ray diffraction (XRD) patterns indicate that there are the Fe 3 O 4 characteristic diffraction peaks and the decrease of the crystallinity for CTS. The study on the adsorptive performances of Ni(II)-IMCPs shows that the process of adsorption is good fitted to Langmuir model and the maximum adsorption capacity of Ni(II)-IMCPs for Ni(II) ions is 500.0 mg g −1 (conditions: V=20 mL, m=0.050 g, contact time=6 h, at 25°C). Kinetic models were used for interpreting data obtained from batch experiments, which show that the whole adsorption processes for Ni(II) ions on Ni(II)-IMCPs are in accordance with pseudo-second-order kinetic equation. The study of repeating and selective adsorption indicates that Ni(II)-IMCPs have good durability and selectivity for Ni(II) ions.

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Enrichment and separation of silver from waste solutions by metal ion imprinted membrane

Cited by 67 publications

References 15 publications

Molecularly Imprinted Membranes

Molecularly Imprinted Membranes

Selective Transport of Silver(I) Cation Across a Bulk Liquid Membrane Containing Bis-β-enamino Ester as Ion Carrier

Adsorption of Ni(II) ion on Ni(II) ion-imprinted magnetic chitosan/poly(vinyl alcohol) composite

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