## 1 Introduction
This membrane was later used by [PERSON] [34] for the recovery of Li\({}^{+}\) from seawater by the ED process. Using this membrane, only Li\({}^{+}\) can significantly migrate through the ionic liquid and concentrate at 5.94% in the cathodic compartment. The same author [46] used the previous membrane stabilized by a coating on both sides with SELEMION\({}^{\text{TM}}\) CMV. He succeeded in separating Li\({}^{+}\) over Na\({}^{+}\) and K\({}^{+}\) and concentrated it at 24.5% using ED process with an initial amount of Lithium in the feed solution of 170 ppb. In our previous work [47], we prepared novel Lithium Composite Membranes LCMs based on the introduction of a Lithium Conductor Glass Ceramic (LICGC) powder, in an anion-exchange polymer (PECH-DABCO and PES-NH\({}_{2}\)) and a non-ionic surfactant (BRIJ76). The BRIJ76 was used to enhance the homogeneity of LICGC powder dispersion in the membrane matrix. The desirable selectivity of the prepared membranes was obtained by creating Li\({}^{+}\) percolation pathways through interconnected LICGC particles. Many DD tests were performed to evaluate the Li\({}^{+}\)/Na\({}^{+}\)/K\({}^{+}\) separation performances and selectivities:S(Li/Na) and S(Li/K). The results proved the high Li\({}^{+}\) selectivity of synthetized LCMs compared to Na\({}^{+}\) and K\({}^{+}\). The best selective membrane composition was found to be 50.5 wt.% of LICGC, 25.5 wt.% of PECH-DABCO, 18 wt.% of PES-NH\({}_{2}\) and 6 wt.% of BRIJ76. This membrane exhibits the highest selectivity coefficient S(Li/Na) = 376 when separating only Li\({}^{+}\) + Na\({}^{+}\) and S(Li/Na) = 278 and S(Li/K) = 364 when separating a mixture of the three cations Li\({}^{+}\), Na\({}^{+}\) and K\({}^{+}\). The Li\({}^{+}\) transport through this LCM was tested lately [48] under different dialysis conditions. It was found that Li\({}^{+}\) concentration increase, treatment duration, neutral pH and Cl\({}^{+}\) as co-ions improve the Li\({}^{+}\) transport in DD when it is present alone in the feed compartment. For CID process, Li\({}^{+}\) diffusion increases, and the optimal transport was found at 0.1 M of HCl as receiving solution. For Li\({}^{+}\)/Na\({}^{+}\) separation, the effect of the feed concentration ratio [Na\({}^{+}\)]\({}_{F}\)/[Li\({}^{+}\)]\({}_{F}\) on Li\({}^{+}\) diffusion and membrane selectivity was tested by DD and CID processes. In both cases, it was found that this ratio positively affects membrane performances (recovered Li\({}^{+}\) ratio and membrane selectivity S(Li/Na)), even at high Na\({}^{+}\) and low Li\({}^{+}\) concentrations. Reusability tests show that LCM remains selective towards Li\({}^{+}\) after three cycles of use with a high selectivity coefficient. These satisfactory results confirm the suitability of LCM for Li\({}^{+}\) extraction. In the present study, we test the use of this LCM membrane for Li\({}^{+}\) extraction using the electrodialysis process. We start with testing the effects of imposed current density using two types of ED cell. The first cell is composed of only two compartments (anode and cathode) separated by the LCM membrane, while the second type is a four-compartment cell (anode, AEM, feeding solution, LCM, receiving solution, AEM and cathode). Then, we test the effect of feeding concentrations ratio ([Na\({}^{+}\)]\({}_{F}\)/[Li\({}^{+}\)]\({}_{F}\)) on the Li\({}^{+}\) recovery rate and membrane selectivity.