The increasing global demand for lithium, driven by the growth of electric mobility and renewable energy storage, has intensified interest in efficient and environmentally sustainable extraction technologies. Direct Lithium Extraction (DLE) processes using sorbent-based systems offer a promising alternative to evaporation ponds, particularly for brines with high impurity content. This thesis investigates the mechanical and structural stability of a lithium aluminum layered double hydroxide chloride (Li/Al-LDH-Cl) sorbent in contact with synthetic brines of varying composition. The work focuses on two main interference scenarios: sulfate-rich brines with different SO₄²⁻/Cl⁻ ratios and carbonate-containing brines with increasing concentrations of Li₂CO₃. The aim was to identify conditions leading to sorbent degradation and to evaluate the DLE performance under representative field-like conditions.