Lithium Isotope Separation using Cation Exchange Resin with High Cross-Linkage

Adsorption and electrokinetic studies of sodalite/lithium/poly(acrylic acid) aqueous system

“…For this reason the search for new sources of lithium is very important, particularly in the context of the production of lithium ion batteries characterized by high energy density and low weight (Languang et al, 2013). Besides the lithium recovery process from ores (lepidolite, spodumene, petalite, amblygonite) and sea water (Swain, 2017;Suzuki et al, 2017), the geothermal water has been recently considered as a potential lithium source (Tomaszewska et al, 2017). It was determined that the concentration of lithium ions in the geothermal sources reaches 16 mg/dm 3 and is higher than that in the sea water (Siekierka et al 2018).…”

Effectiveness and Isotherm Models of Lewatit Monoplus S-108 on Lithium Adsorption Process from Bledug Kuwu Brine with Continuous Flow

“…Suzuki et al demonstrated that the higher separation factor number was linearly corresponding to the degree of cross-linkage of Lewatit and the hydration number of ions. The lithium-ion would prefer to locate into the dense parts in resin [20]. For alkali metal, the time of water molecule was longer around Li + ions and decreased with an increase in the ionic radius, depending on the solution's ionic strength, pH, and temperature, so the separation of K and Ca tended to lower than Mg [21].…”

“…The presence of Na + and K + led to a very low decrease in the adsorption capacity of Li + due to the competition for the active sites and negatively affected Li adsorption indirectly. In addition, the Li + adsorption consumed an equivalent amount of hydroxide ions in the solution [20]. each other.…”

A Comprehensive Review of Selected Major Categories of Lithium Isotope Separation Techniques

“…Lithium isotopes have been separated with N,N ′‐bishexadecyl NtnOenH 4 (NTOE) ion exchanger in a similar method and the separation factor was determined to be 1.0242. [ 42 ] The relation among the isotope separation factor, the amount of hydration, and the degree of crosslinkage of cation‐exchange resin was explained through the usage of commercially prepared cation‐exchange resins by Suzuki et al [ 39 ] with various degrees of crosslinkages, and the isotope separation factor was shown to be linearly linked to the degree of crosslinkage. The commercially prepared strongly acidic cation‐exchange resin crosslinkage is only 24% and hence, various cation‐exchange resins with high degrees of crosslinkage were synthesized for isotope separation by displacement chromatography.…”

“…This difference of lithium isotope separation factor among the various cation exchangers is known to depend on the hydration number around the Li ion, which is known to differ depending on the crosslinking degrees. [ 39 ] Ooi et al [ 40 ] studied the Li isotope fractionations on inorganic ion exchangers of spinel‐type manganese oxide with different ion‐sieve properties and the differences in the separation factor were explained by considering two factors: the difference in the hydration number of Li + between the ion exchanger and the solution phase and the influence of Li + stabilization in the solid phase. Li isotope fractionation properties of inorganic ion exchangers were examined by batch processes, and it was observed that lithium isotope fractionation properties with separation factors of 1.014, 1.024, 1.017, and 1.015 were shown by spinel‐style manganese oxide, cubic antimonic acid, α‐titanium phosphate, and heat‐treated α‐tin phosphate.…”