Sorption of bivalent ions by a fibrous chelating ion exchanger and the structure of sorption complexes

Солдатов, В. С.; Zelenkovskii, V. M.; Orlovskaya, L.A.

doi:10.1016/j.reactfunctpolym.2010.11.003

Cited by 19 publications

(12 citation statements)

References 33 publications

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“…Different ion exchangers bearing the same groups can exhibit significantly different properties because the strengths of the groups depend on the nature of the supporting hydrocarbon structure. 18 The higher retention of the synthesized resins in comparison with the commercial resin Amberlite IRP-64 can be explained due to the structure of the synthesized resins have low dissociation constant and interact more strongly with the metal ions, and the presence of two groups, the sulfonic and carboxylic acid groups on the synthesized resins available to interact with the metal ions and remove them. At higher pH the resins are deprotonated and the groups are free to exchange or complex the metal ion at low pH.…”

Section: Effect Of Phmentioning

confidence: 95%

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POLY(ACRYLAMIDE-co-STYRENE SODIUM SULFONATE) AND POLY(2-ACRYLAMIDE-2-METHYL-1-PROPANESULFONIC ACID-co-ACRYLIC ACID) RESINS WITH REMOVAL PROPERTIES FOR Hg(II), Pb(II), Cd(II), and Zn(II)

Morales¹,

Rivas²

2014

J. Chil. Chem. Soc.

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The water-insoluble polymers poly(acrylamide-co-styrene sodium sulfonate) (P(AAm-co-ESS)) and poly(2-acrylamide-2-methyl-1-propanesulfonic acidco-acrylic acid) (P(APSA-co-AAc)) were synthesized by radical polymerization. Parameters including the water sorption capacity, effect of the pH and reaction time, maximum retention capacity of the metal ions, elution, regeneration, and selectivity were studied. The commercial resin Amberlite IRP-64 was used for comparative purposes. Laboratory tests showed that both of the resins had better capacities to remove Pb(II), Cd(II), Zn(II), and Hg(II) from an aqueous solution by the batch method. P(AAm-co-ESS) and P(APSA-co-AAc) resins remove the metal ions faster and had better regeneration than commercial Amberlite IRP-64 resin.

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Section: Effect Of Phmentioning

confidence: 95%

“…It is a very important variable to know during the research on removal properties of a polymer or material. 18 Inside a mixture of several metal ions, the interaction and preference of the resin could vary. To determine metal ion retention under competitive conditions, a test was performed.…”

Section: Selectivitymentioning

confidence: 99%

POLY(ACRYLAMIDE-co-STYRENE SODIUM SULFONATE) AND POLY(2-ACRYLAMIDE-2-METHYL-1-PROPANESULFONIC ACID-co-ACRYLIC ACID) RESINS WITH REMOVAL PROPERTIES FOR Hg(II), Pb(II), Cd(II), and Zn(II)

Morales¹,

Rivas²

2014

J. Chil. Chem. Soc.

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“…The fibrous structure also has the shape advantage, and the fluid can easily pass through the reactor without significant pressure loss [14] . Although advances have been made in the IEF removal of Cu II or Ni II from wastewater, [15] and the theoretical selectivity of IEF have been further studied based on the adsorption rate of mono‐Cu II and mono‐Ni II [15a,16] . However, little data have been reported on the actual separation effect and recovery process when Cu II and Ni II coexist in wastewater.…”

Section: Introductionmentioning

confidence: 99%

Separation and Recovery Process of Copper (II) and Nickel (II) from Wastewater Using Ion Exchange Fiber

Yang

Jia

et al. 2021

ChemistrySelect

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In this paper, the parameters affecting the adsorption of CuII and NiII by PAN‐NHx fiber and PAN‐COONa fiber were discussed firstly, such as initial ion concentration, pH, and temperature. Secondly, influence factors toward the separation of CuII and NiII by PAN‐NHx fiber were systematically evaluated by single‐column experiments. The results showed that the PAN‐NHx fiber had good separation of CuII and NiII; NiII accounts for more than 99.00 % of total metal ion content in the initial 1000 mL effluent, while CuII is less than 1 %. With the changed from CCuII: CNiII=90 %:10 % to 95 %:5 %, the ratio of CCuII: CNiII in the treated effluent changed from 6 %: 94 % to 2 %: 98 % (fed flow rate: 0.42 BV min−1). The adsorption capacity of PAN‐NHx adsorption column was well maintained after six cycles. Finally, based on the above laboratory results, a multi‐column process was designed to separate and recover CuII and NiII from wastewater.

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“…PANF have a tight molecular structure and good chemical stability [26,27], and they bear a large number of strongly polar cyano groups (-CN) on their macromolecular chains, which can be conveniently converted into other groups such as amides, carboxylic acids, amidoximes and hydrazides [28,29]. This makes PANF an ideal raw material to prepare functional fibres, such as amine [30], quaternary ammonium [31], quaternary phosphonium [7], sulfhydryl [32], carboxyl [33], carbon [34][35][36][37] and amidoxime [38] fibres, by chemical modification. According to the hard and soft acid-base theory, silver ions belong to the category of soft acids, which easily coordinate with soft bases.…”

Section: Introductionmentioning

confidence: 99%

Preparation of polyacrylonitrile-based fibres with chelated Ag ions for antibacterial applications

Duan

Chen

et al. 2020

R. Soc. open sci.

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The need for an excellent antibacterial material that is sufficiently powerful to never develop bacterial resistance is urgent. In this study, a series of novel polyacrylonitrile-based fibres with chelated Ag ions (referred to as Ag-SH-PANF) were prepared by a two-step chemical modification process: grafting and chelating. The properties of the as-prepared Ag-SH-PANF were characterized by Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The antibacterial activities of Ag-SH-PANF were examined against pathogenic bacteria, and an antibacterial mechanism was explicated based on the release of Ag ions from the fibres' surfaces. The results showed that, although chelation occurred between the Ag ions and the grafted amino, sulfhydryl and disulfide groups, Ag-SH-PANF retained its fine microstructure and thermal stability. Moreover, Ag-SH-PANF displayed excellent antibacterial ability against pathogenic bacteria as well as good washing durability. In terms of the antibacterial mechanism, Ag ions are the main bactericidal agents in the role of catalysts and are not consumed in the antibacterial process. Nonetheless, a relatively higher concentration of Ag ions can accelerate the bactericidal process.

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Sorption of bivalent ions by a fibrous chelating ion exchanger and the structure of sorption complexes

Cited by 19 publications

References 33 publications

POLY(ACRYLAMIDE-co-STYRENE SODIUM SULFONATE) AND POLY(2-ACRYLAMIDE-2-METHYL-1-PROPANESULFONIC ACID-co-ACRYLIC ACID) RESINS WITH REMOVAL PROPERTIES FOR Hg(II), Pb(II), Cd(II), and Zn(II)

POLY(ACRYLAMIDE-co-STYRENE SODIUM SULFONATE) AND POLY(2-ACRYLAMIDE-2-METHYL-1-PROPANESULFONIC ACID-co-ACRYLIC ACID) RESINS WITH REMOVAL PROPERTIES FOR Hg(II), Pb(II), Cd(II), and Zn(II)

Separation and Recovery Process of Copper (II) and Nickel (II) from Wastewater Using Ion Exchange Fiber

Preparation of polyacrylonitrile-based fibres with chelated Ag ions for antibacterial applications

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