|
KMID : 1059519870310040308
|
|
Journal of the Korean Chemical Society
1987 Volume.31 No. 4 p.308 ~ p.314
|
|
|
New Analytical Methods for Separation and Identification of Heavy Metals (Ⅱ). A Study on the Adsorption and Recovery of Cu(Ⅱ) ion by Amberlite XAD-7 Rrsins Impregnated with Chelating Agents
|
|
Lee Dai-Woon
Eum Chul-Hun
Kim Tae-Sung
Shin Doo-Soon
Chung Koo-Soon
|
|
|
Abstract
|
|
|
|
The adsorption behavior of some chelating agents on the Amberlite XAD-7 resin was studied to obtain the optimum conditions for the preparation of chelating agent-XAD-7 resins. The chosen chelating agents are cupferron (CP), diphenylcarbazone (DPC), salicylaldoxime (SAO), thiosalicylic acid (TSA), and dimethylglyoxime (DMG), which have been well known chelating agents to Cu(Ⅱ) and Ni (Ⅱ) ions. Among the chelating agent-XAD-7 resins, SAO-XAD-7 and DMG-XAD-7 resins were evaluated as appropriate impregnated resins by investigating their stabilities in the wide pH range and high abilities to adsorb Cu(Ⅱ) and Ni(Ⅱ) ions. The selective adsorption of Cu(Ⅱ) from Ni(Ⅱ) was possible by changing pH condition by SAO-XAD-7 resin. The adsorption capacities of SAO-XAD-7 and DMG-XAD-7 for Cu(Ⅱ) were 7 × 10-3mmol Cu(Ⅱ) per gram of resin and 2 × 10-3mmol Cu(Ⅱ) per gram of resin, respectively. The quantitative recovery of Cu(Ⅱ) adsorbed by the resin was demonstrated. The adsorption behavior of Cu(Ⅱ) and Ni(Ⅱ) by the single and mixed bed of chelating agent-XAD-7 resin was discussed.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|