Kinetics and Equilibrium Isotherm Studies for the Aqueous Lithium Recovery by Various Type Ion Exchange Resins

被引：4

作者：

Won, Yong Sun ^{[1
]}

You, Hae-na ^{[1
]}

Lee, Min-Gyu ^{[1
]}

机构：

[1] Pukyong Natl Univ, Dept Chem Engn, 365 Sinseon Ro, Busan 48547, South Korea

来源：

KOREAN JOURNAL OF MATERIALS RESEARCH | 2016年 / 26卷 / 09期

关键词：

ion exchange resin; lithium recovery; functional group; cation form; porous; gel;

D O I：

10.3740/MRSK.2016.26.9.498

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The characteristics of aqueous lithium recovery by ion exchange were studied using three commercial cation exchange resins: CMP28 (porous type strong acid exchange resin), SCR-B (gel type strong acid exchange resin) and WK60L (porous type weak acid exchange resin). CMP28 was the most effective material for aqueous lithium recovery; its performance was even enhanced by modifying the cation with K+. A comparison to Na+ and H+ form resins demonstrated that the performance enhancement is reciprocally related to the electronegativity of the cation form. Further kinetic and equilibrium isotherm studies with the K+ form CMP28 showed that aqueous lithium recovery by ion exchange was well fitted with the pseudo-second-order rate equation and the Langmuir isotherm. The maximum ion exchange capacity of aqueous lithium recovery was found to be 14.28 mg/g and the optimal pH was in the region of 4-10.

引用

页码：498 / 503

页数：6

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