Solid phase extraction of lithium ions from water samples using K-birnessite with layer-structure material form (KBRLSM)

Abstract

A B S T R A C TLayer-structure materials have attracted considerable interest for the removal, separation, and preconcentration of trace metals in analytical and environmental chemistry. In the present work, we developed a separation and preconcentration method for lithium ions from water samples using K-birnessite with layer-structure material (KBRLSM) form. The experimental parameters that affected the extraction efficiency of the method such as pH, flow rate and volume of the sample solution, concentration of eluent, amount of adsorbent, effect of common matrix ions, and capacity of adsorbent were investigated and optimized. The adsorbed Li ions on KBRLSM were eluted with 5 mL of 1 mol L −1 HCl solutions and their concentrations were determined by high resolution-continuum source flame atomic absorption spectrometry. The adsorption isotherm studies indicate that the adsorption of Li ions follows both the Langmuir and Freundlich isotherms. The Langmuir monolayer adsorption capacities (q max ) were estimated as 2.77 mg g −1 . A constant of the energy (K L ) for Li was calculated as 0.35 L g −1 . The optimum pH value for quantitative sorption of Li ions was found between 5.0 and 7.0. The preconcentration factor was found as 40 for 200 mL aqueous solution containing 5 μg Li ions. The developed method was successfully applied to some water samples.

Removal of lithium from aqueous solutions by solid-phase extraction using sawdust loaded with magnetite nanoparticles and study of apoptosis, MDA and 8-OHdG caused by lithium toxicity in fish brain

“…In a study where solid-phase extraction of lithium ions from water samples was performed using Kbirnessite with layered material form (KBRLSM), the optimum pH was found to be between 5.0 and 7.0 for quantitative sorption of Li ions. Moreover, an enrichment factor of 40 was found for 200 mL of the aqueous solution containing 5 μg of Li ions (Çiftçi and Er, 2015). In another study investigating the superior lithium adsorption and required magnetic separation behavior of iron-doped lithium ion sieves, the equilibrium adsorption capacity of Fe/Ti-0.15(H) was found to be 53.3 mg/g in LiOH solutions within 24 h. This value was found to be higher than that of pure Li2TiO3 (50.5 mg/g) without Fe addition and Fe/Ti-0.15(H) exhibited high selectivity for Li in simple regeneration (Wang et al, 2018).…”

Monitoring of heavy metal pollution by using populus nigra and cedrus libani

“…Analytik Jena ContrAA Model 300 series High Resolution-Continuum Source Flame Atomic Absorption Spectrometer (GLE, Berlin, Germany) was used for the analysis of metals. All absorption lines of an element in the spectral range of 185-900 nm can be analytically evaluated by using a xenon (Xe) short-arc lamp as a continuum lamp in the HR-CS FAAS [15]. The working conditions of HR-CS FAAS for the analysis of the metals are given in Table 1.…”

Preparation of Sulfonated Polyarylene Ether Nitrile Hollow Fiber Membrane Adsorbent and Its Potential in Separation Lithium Ion from Brine

“…[21] Among them, adsorption method for separating lithium from aqueous solutions has the advantages of high efficiency, low energy-consumption, and mild conditions, making it a promising prospect in the field of separation. [22] So far, researchers have developed a variety of adsorbent materials including layered adsorbents, [23,24] aluminum salt adsorbents, [25] ion sieve adsorbents and organic polymer adsorbents. [26,27] However, the structure of the layered adsorbent is not stable during adsorption-desorption, which is limited in large-scale applications.…”

“…So far, researchers have developed a variety of adsorbent materials including layered adsorbents, [23,24] aluminum salt adsorbents, [25] ion sieve adsorbents and organic polymer adsorbents [26,27] . However, the structure of the layered adsorbent is not stable during adsorption‐desorption, which is limited in large‐scale applications.…”