Preparation and characterization of poly(amidoxime) chelating resin from polyacrylonitrile grafted sago starch

Lutfor, M. R.; Silong, Sidik; Zin, Wan Md.; Rahman, Lutfor; Ahmad, Mansor Bin; Haron, Jelas

doi:10.1016/s0014-3057(99)00286-4

Cited by 88 publications

(52 citation statements)

References 13 publications

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“…35 These differences can be better seen in the difference spectrum given in Figure 5, especially with the appearance of a new peak at 904 cm Ϫ1 assigned to O-U-O stretching vibration. 7,32 Similar differences were observed in the FTIR spectra of adsorbents containing other metal ions. For the spectrum of adsorbed Pb, Cu, and Co sample, N-O band initially around 927 cm Ϫ1 becomes weaker and shifts to around 920 cm Ϫ1 .…”

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confidence: 71%

“…31 Lutfor et al studied the adsorption of uranyl ions onto polyacrylonitrilegrafted sago starch and it was found that uranyl ion uptake by this polymer was 283 mg/g. 32 Rivas et al used a commercial poly(amidoxime) chelating polymer and investigated the adsorption capacity of Cu, Cd, Hg, Pb, and U ions by batch technique. 33 It was found that this resin exhibited affinity for UO 2 2ϩ and Pb 2ϩ , but no affinity for the other metal ions.…”

Section: Resultsmentioning

confidence: 99%

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Removal of concentrated heavy metal ions from aqueous solutions using polymers with enriched amidoxime groups

Kavaklı

Güven

2004

J of Applied Polymer Sci

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Particulate and fibrous adsorbents with enriched amidoxime groups were synthesized by using a novel monomer N,NЈ-dipropionitrile acrylamide. The adsorption properties of amidoximated poly(N,NЈ-dipropionitrile acrylamide) [poly(DPAAm)] particles and a nonwoven fabric grafted with the same for UO 2 2ϩ , Pb 2ϩ , Cu 2ϩ, and Co 2ϩ at high concentrations were investigated by batch process. Metal ion adsorption studies were conducted from metal ion solutions with different initial concentrations (100 -1500 ppm). It was shown that particulated amidoximated poly-(DPAAm) has higher adsorption capacity than amidoximated nonwoven fabrics for all metal ions, especially for uranyl ions. The results of the adsorption studies showed that the interaction between UO 2 2ϩ and amidoximated groups agree with the Langmuir-type isotherm. From the Langmuir equation, the adsorption capacities were found as 400 mg UO 2 2ϩ /g dry amidoximated poly(DPAAm) and 250 mg UO 2 2ϩ /g dry amidoximated graft polymer.

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supporting

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Removal of concentrated heavy metal ions from aqueous solutions using polymers with enriched amidoxime groups

Kavaklı

Güven

2004

J of Applied Polymer Sci

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“…All the isotherm parameters are listed in Table 2, which reects that the Langmuir isotherm can t the experimental data well with a higher R 2 value (>0.99), favorable R L (0.1534-0.7435) and reasonable Langmuir constant (k L > 0). When compared with the representative studies on the adsorbents containing amidoxime and/or hydroxamic acid functional groups (Table S1, ESI †), 17,32,35,36,[43][44][45][46] pAHA-cellulose shows an increased adsorption capacity for almost all the metal ions studied. This improved adsorption ability can be due to the coexistence of the amidoxime and hydroxamic acid functional groups, conrming the possible chelation mechanism.…”

Section: 42mentioning

confidence: 99%

Synthesis of a poly(amidoxime-hydroxamic acid) cellulose derivative and its application in heavy metal ion removal

et al. 2017

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Amidoxime and hydroxamic acid functional groups have comparable chelating ability with synthetic resins, but the synthesis of cellulose fibers bearing amidoxime and hydroxamic acid functional groups using simple and effective strategies have yet to be developed. In this study, a poly(amidoxime-hydroxamic acid) cellulose derivative (pAHA-cellulose) was prepared via free radical polymerization followed by an oximation reaction. A series of microscopic analyses and spectral tests proved that the pAHA-cellulose was covered with uniform amidoxime and hydroxamic acid functional groups. The use of pAHAcellulose towards heavy metal ion removal was investigated and an uptake equilibrium was achieved within 60 min for Cu 2+ and Zn 2+ , and 120 min for Pb 2+ and Cr 3+, through a chelation mechanism. The adsorption behavior followed the pseudo-second-order kinetic model and Langmuir isotherm with and Zn 2+ , respectively. Regeneration of pAHA-cellulose did not significantly influence the adsorption towards metal ions for up to five sequential cycles. Considering the simple and efficient grafting process, excellent adsorbability and prominent renewability, pAHA-cellulose is believed to be a new and feasible candidate for heavy metal ion removal from aqueous solution.

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“…17 Here, the mechanism of the reaction of poly(acrylate ester) with hydroxylamine, giving the conversion to poly(hydroxamic acid), is shown in Scheme 1. This mechanism is based on the mechanism suggested by Domb et al 10…”

Section: Poly(hydroxamic Acid) Resinmentioning

confidence: 99%

Synthesis and characterization of poly(hydroxamic acid) chelating resin from poly(methyl acrylate)-grafted sago starch

Lutfor

Sidik

Yunus

et al. 2000

J. Appl. Polym. Sci.

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Preparation and characterization of poly(amidoxime) chelating resin from polyacrylonitrile grafted sago starch

Cited by 88 publications

References 13 publications

Removal of concentrated heavy metal ions from aqueous solutions using polymers with enriched amidoxime groups

Removal of concentrated heavy metal ions from aqueous solutions using polymers with enriched amidoxime groups

Synthesis of a poly(amidoxime-hydroxamic acid) cellulose derivative and its application in heavy metal ion removal

Synthesis and characterization of poly(hydroxamic acid) chelating resin from poly(methyl acrylate)-grafted sago starch

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