Dynamic adsorption and desorption of heavy metal ions on poly(acrylaminophosphonic-carboxyl-hydrazide) chelating fiber

Liu, Ruixia; Zhang, Baowen; Tang, Hongxiao

doi:10.1007/s002160051070

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…Fiber samples (0.10 AE 0.01 g) were placed into polymerization tube containing 0.40 g AN. Then, 2 cm 3 of a Bz 2 O 2 solution prepared in aceton (9.68 g/L) was added to it, and the mixture was made up to 20 cm 3 with deionized water and placed into a water bath at 85 C AE 0.1 C for 4 h. The fiber samples taken from the polymerization mixture after grafting were immersed in N,N-dimethylformamide at 40 C for 1 h to remove unreacted monomers and homopolymers. Then, the fibers were rinsed with methanol at room temperature and dried.…”

Section: Graft Copolymerizationmentioning

confidence: 99%

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Preparation of amidoximated polyester fiber and competitive adsorption of some heavy metal ions from aqueous solution onto this fiber

Coşkun

Soykan

2009

J of Applied Polymer Sci

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In this study, a fibrous adsorbent containing amidoxime groups was prepared by graft copolymerization of acrylonitrile (AN) onto poly(ethylene terephthalate) (PET) fibers using benzoyl peroxide (Bz 2 O 2 ) as initiator in aqueous solution, and subsequent chemical modification of cyano groups by reaction with hydroxylamine hydrochloride in methanol. The grafted and modified fibers were characterized by FTIR, TGA, SEM, and XRD analysis. The crystallinity increased, but thermal stability decreased with grafting and amidoximation. The removal of Cu(II), Ni(II), Co(II), Pb(II), and Cd(II) ions from aqueous solution onto chelating fibers were studied using batch adsorption method. These properties were investigated under competitive conditions. The effects of the pH, contact time, and initial ion concentration on the removal percentage of ions were studied. The results show that the adsorption rate of metal ions followed the given order Co(II) > Pb(II) > Cd(II) > Ni(II) > Cu(II). The percentage removal of ions increased with initial ion concentration, shaking time, and pH of the medium. Total metal ion removal capacity was 49.75 mg/g fiber on amidoximated fiber. It was observed that amidoximated fibers can be regenerated by acid without losing their activity, and it is more selective for Pb(II) ions in the mixed solution of Pb-Cu-Ni-Co-Cd at pH 4.

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Section: Graft Copolymerizationmentioning

confidence: 99%

“…[33][34][35][36][37] Most of the chelating fibers were reported by introduction of suitable functional groups on various types of fibrous polymers: poly(ethylene terephthalate), 38 polyvinyl alcohol, 39 polyacrylonitrile, 40 etc. Research on fibrous reactive agents has shown many advantages over their resin counterparts.…”

Section: Introductionmentioning

confidence: 99%

Preparation of amidoximated polyester fiber and competitive adsorption of some heavy metal ions from aqueous solution onto this fiber

Coşkun

Soykan

2009

J of Applied Polymer Sci

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“…In our laboratory, the ion exchange chelating fibers containing carboxyl‐tetrazine,11 aminophosphonic‐carboxyl‐hydrazide,12 and aminophosphonic‐dithiocarbamate13 were synthesized in succession, and used for the preconcentration of trace rare earth elements in sea water14 and heavy metal ions in model water 15…”

Section: Introductionmentioning

confidence: 99%

Application of the modified polyacrylonitrile fiber with amino-carboxyl-tetrazine groups for the preconcentration of trace heavy metal ions

Liu

Tang

1999

J. Appl. Polym. Sci.

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ABSTRACT:A new fibrous sorbent containing ethylenediamine, carboxyl, and tetrazine groups based on polyacrylonitrile fiber was synthesized and developed for the preconcentration of heavy metal ions. The experimental parameters such as pH value, sorptive capacity, flow velocity, reuse, as well as eluent type and concentration were investigated in detail. All the studied metal ions can be quantitatively retained by the modified fiber under pH Ն 3.5, then eluted by using a mixture of 1 mol/L hydrochloric acid and 5% thiocarbamide as eluent warmed to 40°C. The column technique was applied for the concentration of Cu(II), Cd(II), Zn(II), Mn(II), Pb(II), Co(II), and Ni(II) ions in model samples with satisfactory results, and the relative standard deviations for the determination of metal ions were found to be less than 5%.

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Preparation and adsorption properties of poly(N‐vinylformamide/acrylonitrile) chelating fiber for heavy metal ions

Lin

Kimura

Hanabusa

et al. 2002

J of Applied Polymer Sci

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In this article we report a new chelating fiber that was prepared from a hydrolyzate of poly(N-vinylformamide/acrylonitrile) by a wet-spinning method. This fiber contains chelating groups, such as amidine groups, amino groups, cyano groups, and amide groups, with high densities. We examined the chelating abilities for several metal ions with this fiber, and present the morphological merit of the fibrous product compared with the globular resin. Based on the research results, it is shown that the fiber has higher binding capacities and better adsorption properties for heavy metal ions than the resin. The pH value of the metal ion solution shows strong influences on the adsorption of the metal ions. The maximum adsorption capacities of the fiber for Cu 2ϩ , Cr 3ϩ , Co 2ϩ , Ni 2ϩ , and Mn 2ϩ are 112.23, 88.11, 141.04, 108.06, and 73.51 mg/g, respectively. In mixed metal ions solution, the fiber adsorbs Cr 3ϩ , Cu 2ϩ and Co 2ϩ efficiently. The adsorbed metal ions can be quantitatively eluted by hydrochloric acid.

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Dynamic adsorption and desorption of heavy metal ions on poly(acrylaminophosphonic-carboxyl-hydrazide) chelating fiber

Cited by 7 publications

References 14 publications

Preparation of amidoximated polyester fiber and competitive adsorption of some heavy metal ions from aqueous solution onto this fiber

Preparation of amidoximated polyester fiber and competitive adsorption of some heavy metal ions from aqueous solution onto this fiber

Application of the modified polyacrylonitrile fiber with amino-carboxyl-tetrazine groups for the preconcentration of trace heavy metal ions

Preparation and adsorption properties of poly(N‐vinylformamide/acrylonitrile) chelating fiber for heavy metal ions

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