Adsorption properties of amidoxime resins for separation of metal ions from aqueous systems

Nilchi, A.; Babalou, Aliakbar; Rafiee, Reza; Kalal, Hossein Sid

doi:10.1016/j.reactfunctpolym.2008.09.011

Cited by 56 publications

(33 citation statements)

References 20 publications

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“…In comparison with other resins [34] and clays [35] used for copper elimination, sorbent-LDH presents a Cu 2+ uptake capacity and an equilibration time of the same order. However, its copper affinity is higher, allowing lower equilibrium concentration in the supernatants.…”

Section: Uptake Measurementsmentioning

confidence: 91%

EDTA modified LDHs as Cu2+ scavengers: Removal kinetics and sorbent stability

Rojas

Pérez

Erro

et al. 2009

Journal of Colloid and Interface Science

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Section: Uptake Measurementsmentioning

confidence: 91%

EDTA modified LDHs as Cu2+ scavengers: Removal kinetics and sorbent stability

Rojas

Pérez

Erro

et al. 2009

Journal of Colloid and Interface Science

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“…17,[21][22][23] Furthermore, amidoximated cellulose can act as a nanoreactor to produce nanocomposites with tailored characteristics. 24,25 Also, amidoxime-reduced metal nanocomposites possess potent antimicrobial functionality.…”

Section: Polymeric Ligands Bearing Amidoxime (R-c(nh 2 )]N-oh) or Hydmentioning

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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“…Moreover, the result matches well with those using other adsorbents. For instance, Nilchi [34] reported the order of U > Pb ) Cu ) Cd using AN-DVB-MA, Kavakli [35] reported U ) Cu > Pb using a chelating polymer containing double amidoxime groups. According the HSAB theory, ANH and ANOH of Na-Mont-APAN act as hard base, uranyl acts as hard acid, so the adsorbent exhibits excellent adsorption capacity towards uranyl.…”

Section: Adsorption Selectivity Of Na-mont-apanmentioning

confidence: 99%