The fast removal of low concentration of cadmium(II) from aqueous media by chelating polymers with salicylaldehyde units

Amoyaw, Prince; Williams, Michèle; Bu, Xiu R.

doi:10.1016/j.jhazmat.2009.05.028

Cited by 39 publications

(9 citation statements)

References 43 publications

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“…Kumar et al [80] prepared an adsorbent by crosslinking chitosan and polyvinyl alcohol. Amoyaw et al [81] studied a salicylaldehyde chelating functional group based polymer, poly[4-(4-vinylbenzyloxy)-2-hydrobenzaldehyde], PVBH for the removal of low concentrations of cadmium metal ion at ppb levels from aqueous media. He established that the adsorption process was very fast, and followed pseudo-second-order kinetics.…”

Section: Polymer and Beads As Adsorbentmentioning

confidence: 99%

A comprehensive review on Cd(II) removal from aqueous solution

Purkayastha

Mishra

Biswas

2014

Journal of Water Process Engineering

170

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Section: Polymer and Beads As Adsorbentmentioning

confidence: 99%

A comprehensive review on Cd(II) removal from aqueous solution

Purkayastha

Mishra

Biswas

2014

Journal of Water Process Engineering

170

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“…This can be explained by taking in to account the fact that Cu, Ni, Sn and Pb exist as cationic species at 2.0 mol/dm 3 HCl concentration whereas gold and zinc exist in complex forms which are adsorbed by Cyanex 923 as reported. 24,33,36) For exploring the separation condition between gold and zinc, the adsorption study of gold has been carried out separately from its synthetic solution containing 5 mg Au/ dm 3 at 2.0 M acidity. The results showed that almost gold (99.5%) was adsorbed on SIR within 1,800 s and ratio 25 cm 3 /g (aqueous/resin).…”

Section: Adsorption Of the Other Metals By The Sirmentioning

confidence: 99%

Extraction and Separation of Cadmium from the Chloride Solution of E-Waste Using Cyanex 923 Impregnated Amberlite XAD-7HP Resin

et al. 2015

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Cadmium(II) is not only hazardous but is also an impurity in the leachate of electronic waste which is processed during the extraction of valuable metals. This research focuses on the removal of cadmium from the leachate of e-waste containing Cu, Ni, Sn, Pb, Cd, Zn and Au using a solvent impregnated resin (SIR). The studies performed for the extraction of cadmium from the high acidity chloride solution showed the effective removal of cadmium forming solvation compound with Cyanex 923 impregnated Amberlite XAD-7HP resin. In the adsorption studies, the kinetics was found to be a second-order rate and followed a Langmuir isotherm. The results also showed that SIR comprising Cyanex 923 is effective for adsorption of zinc and gold from the leachate. The loaded metals on the SIR were separated by using selective eluents, water for Cd and Zn, whereas thiourea eluted Au. The remaining metals in the raffinate could be further processed to recover valuables after removing cadmium and other metals by a suitable hydrometallurgical processes.

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“…Among these purification methods, the adsorption process using adequate adsorbents is considered as one of the most efficient and economical techniques in the viewpoint of simple design and facile handling. Numerous efforts have been contributed to the development of effective adsorbents like activated carbon [13], chitosan [4,14], zeolite [15], polymer [16,17], functionalized silica [18][19][20][21], and clay [22][23][24][25]. Besides, there is also a huge interest to adsorption on metallic and coated surfaces in the field of petroleum science [26][27][28].…”

Section: Introductionmentioning

confidence: 99%