TY - JOUR
T1 - Adsorption and separation behavior of cobalt, nickel, and copper in nitrite medium by anion exchanger
AU - Wei, Yuezhou
AU - Feng, Qiming
AU - Arai, Tsuyoshi
AU - Kumagai, Mikio
PY - 2002/7
Y1 - 2002/7
N2 - To investigate the possibility of separation of metal ions in nitrite medium by anion exchange, adsorption and elution behavior of the three typical transition metals of Co(II), Ni(II) and Cu(II) in nitrite solution with a commercial anion exchanger, Amberlite IRA-900 and a novel silica-based anion exchanger, AR-01 with fine particle size has been studied. Furthermore, the separation behavior of these metal ions in nitrite solution was demonstrated by anion exchange chromatography. Co(II) and Cu(II) showed strong adsorption onto the anion exchangers in nitrite solution, while the adsorption of Ni(II) was very weak. The adsorption is considered to result from the formation of anionic nitro-complexes. Complete separation of Co(II) from Ni(II), and Cu(II) from Ni(II) was achieved in column experiments with a dilute nitric acid as eluent. Compared to IRA-900, AR-01 showed significantly faster adsorption and elution kinetics.
AB - To investigate the possibility of separation of metal ions in nitrite medium by anion exchange, adsorption and elution behavior of the three typical transition metals of Co(II), Ni(II) and Cu(II) in nitrite solution with a commercial anion exchanger, Amberlite IRA-900 and a novel silica-based anion exchanger, AR-01 with fine particle size has been studied. Furthermore, the separation behavior of these metal ions in nitrite solution was demonstrated by anion exchange chromatography. Co(II) and Cu(II) showed strong adsorption onto the anion exchangers in nitrite solution, while the adsorption of Ni(II) was very weak. The adsorption is considered to result from the formation of anionic nitro-complexes. Complete separation of Co(II) from Ni(II), and Cu(II) from Ni(II) was achieved in column experiments with a dilute nitric acid as eluent. Compared to IRA-900, AR-01 showed significantly faster adsorption and elution kinetics.
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U2 - 10.1081/SEI-120014372
DO - 10.1081/SEI-120014372
M3 - Article
AN - SCOPUS:0036660860
SN - 0736-6299
VL - 20
SP - 561
EP - 573
JO - Solvent Extraction and Ion Exchange
JF - Solvent Extraction and Ion Exchange
IS - 4-5
ER -