A potential adsorbent for Li⁺ extraction from liquid resources is titanium-type lithium-ion sieves (LISs) because of their structural stability and high adsorption capacity. However, the adsorption efficiency and recycling stability of LISs produced with various TiO₂ precursors vary significantly. Additionally, traditional TiO₂ is often produced using chemical-intensive methods, resulting in large amounts of effluent containing strong acids and high concentrations of chloride/sulfate ions, posing a threat to the environment. Hence, in this study, the LIS precursors, Li₂TiO₃, were synthesized utilizing novel environment-friendly anatase titania made from flocculated sludges of synthetic secondary sewage effluent (S-LTO) and dye wastewater (D-LTO). The physicochemical characteristics and adsorption capacities of the synthesized LISs were then investigated. The results indicated that sludge-generated LISs could be effectively produced and had a high Li⁺ adsorption capacity of 35.43 mg/g for S-LTO and 34.97 mg/g for D-LTO. For the synthesized LISs, the adsorption kinetics and isotherms verified a fixed energy-based monolayer chemisorption. Furthermore, the H₂TiO₃ generated from sludge was extremely stable after acid pickling, reusable (4 regeneration cycles exhibited minimal performance degradation), and highly selective to Li⁺ in an aqueous medium, suggesting enormous industrial potentials such as seawater and brine for aqueous Li⁺ recovery.

锂的电位吸附剂⁺从液体资源提取是由于它们的结构稳定性和较高的吸附能力钛型锂离子筛（LISS）。然而，用各种TiO ₂前驱体生产的LISs 的吸附效率和循环稳定性差异很大。此外，传统的TiO ₂通常使用化学密集型方法生产，导致大量流出物含有强酸和高浓度的氯/硫酸根离子，对环境构成威胁。因此，在本研究中，LIS 前驱体 Li ₂ TiO ₃, 是利用由合成二次污水 (S-LTO) 和染料废水 (D-LTO) 的絮凝污泥制成的新型环保锐钛矿二氧化钛合成的。然后研究了合成的 LIS 的理化特性和吸附能力。结果表明，污泥产生的 LIS 可以有效地产生，并且具有较高的 Li ⁺吸附容量，S-LTO 为 35.43 mg/g，D-LTO 为 34.97 mg/g。对于合成的 LIS，吸附动力学和等温线验证了基于固定能量的单层化学吸附。此外，从污泥中产生的 H ₂ TiO ₃在酸洗后非常稳定，可重复使用（4 次再生循环表现出最小的性能下降），并且对锂具有高度选择性⁺在水性介质中，表明具有巨大的工业潜力，例如海水和盐水，可用于回收Li ⁺水溶液。