2011
DOI: 10.1016/j.desal.2010.11.035
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Removal of copper ions from aqueous solutions by a new sorbent: Polyethyleneiminemethylene phosphonic acid

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Cited by 49 publications
(24 citation statements)
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“…The peak at 1322 cm −1 in correlation with the C-N group almost completely disappears, and the formation of the N-Ni(II) bond can be validated [28]. In addition, the decrease in intensity for the peak at 1650 cm −1 accompanied by a negative shift of 15 cm −1 may be due to the fact that Ni(II) is complexed by the O-H group of the EDTMPA molecule [15,45]. …”
Section: Ftir Spectramentioning
confidence: 92%
“…The peak at 1322 cm −1 in correlation with the C-N group almost completely disappears, and the formation of the N-Ni(II) bond can be validated [28]. In addition, the decrease in intensity for the peak at 1650 cm −1 accompanied by a negative shift of 15 cm −1 may be due to the fact that Ni(II) is complexed by the O-H group of the EDTMPA molecule [15,45]. …”
Section: Ftir Spectramentioning
confidence: 92%
“…This is due to the reduction in true biosorption of metal ions by the blockage of active sites by metal precipitation. The precipitation of Zn as hydroxide occurred at pH 7-12, while precipitation of Cu occurred at pH > 6 ( Gupta et al, 2010;Ferrah et al, 2011). However, Cu uptake was consistently higher than Zn uptake over the whole range of pH.…”
Section: Effect Of Solution Ph On Heavy Metal Adsorptionmentioning
confidence: 84%
“…5. When the pH of the solution was higher than 6.0, precipitation of Cu 2+ ions as Cu(OH) 2 would occur spontaneously [34]. Therefore, the measured pH range was from 2.0 to 5.0.…”
Section: Ph Effect On the Adsorptionmentioning
confidence: 99%