Preferred uptake of Cu(II) and Cd(II) by novel pyrazole-functionalized chelating polymers

Metal‐Ion Extraction by Immobilised Aza Crown Ethers

“…Distribution coefficients [D ϭ (mg M nϩ /g of dry resin)/(mg M nϩ / mL of solution)] were determined as a function of pH according to Roozemond et al [22] In each case, 0.2 g of resin, 25 mL of buffer solution and 25 mL of an appropriate metal ion solution, containing such an amount of metal ions that the polymer-bound ligands were present in about eightfold excess, were shaken for 48 h.…”

Adsorption of Ni2+ from aqueous solutions by novel polyethyleneimine‐attached poly(p‐chloromethylstyrene) beads

“…Egawa 28 has studied uranium adsorption on polyacrylo-nitrile fibers containing amidoxime groups and reported a 7-h equilibrium adsorption time. Teramoto et al 29 reported that a spiral type sup- ported liquid membrane reached steady state at about 4 h. Roozemond et al 30 studied copper and cadmium uptake by 3,5-dimethyl-1-hydroxymethyl pyrazole attached p-amino-methyl substituted poly(styrene-co-divinylbenzene) chelating polymer. They showed that adsorption was rather slow, and took 2 days for the resin to reached equilibrium.Ebraheem and Hamdi 31 studied the adsorption of various divalent ions including Ni(II), Cu(II), Zn(II), and Cd(II) on phenol formaldehyde polymer containing poly(salicyl aldoxime 3,5-diylmethylene), and reported a 10-h equilibrium adsorption time.…”

Adsorption of heavy metal ions and azo dyes by crosslinked nanochelating resins based on poly(methylmethacrylate-co-maleic anhydride)

“…Shreedhara-Murthy and Ryan found 5-27 mg/g Cu(II) removal by cellulose dithiocarbamate resins [30]. Roozemond showed 32 mg/g Cu(II) with pyrazole-containing poly(styrene-divinyl-benzene) sorbents [31]. Say et al [32] achieved 714.1, 468.8 and 639.4 mg/g adsorption capacities for Pb(II), Cr(III) and Cd(II), respectively, with poly(HEMA-MAH) beads.…”