Selective removal of copper ions from aqueous solutions using modified silica beads impregnated with LIX 84

作者: Jong Sung Kim , Jongheop Yi

DOI: 10.1002/(SICI)1097-4660(199906)74:6<544::AID-JCTB71>3.0.CO;2-7

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摘要: Silica beads immobilized with 2-hydroxy-5-nonylacetophenoneoxime (LIX 84) were prepared after silica surface modification by γ-aminopropyltriethoxysilane (SB-L). Batch and packed-column tests conducted to evaluate the metal ion removal capabilities of adsorbent. Equilibrium isotherms SB-L aqueous solutions containing copper ions obtained. In addition, kinetic performances for from investigated. The results showed that amount extraction increases solution pH in range between 1.5 5. selectivity was also experimentally investigated, these adsorbed selectively presence other such as Ni2+, Co2+, Zn2+, Cd2+, Ca2+ Mg2+. From regeneration experiments, it found at recovered acidic solutions. recovery ratios 78% 90%, depending on types may be used selective solutions. © 1999 Society Chemical Industry

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