Maximizing the sustainable recycling of spent lithium-ion batteries (LIBs) shows economic and environmental significance. This study recovered lithium cobaltate (LiCoO₂, LCO) from spent LIBs cathode powder. The recovered LCO was then combined with NaHSO₃ to remove refractory organic pollutants of carbamazepine (CBZ) in water. The degradation of CBZ reached 80.0% within 60 min, by ¹O₂, \({\rm{SO}}_4^{ - \cdot }\), \(^ \cdot {\rm{OH}}\) and \({\rm{O}}_2^{ - \cdot }\) generated in the LCO/NaHSO₃ reaction. The electron transfer between Co (III) and Co (II) was beneficial to the generation of free radicals. The LCO/NaHSO₃ degraded CBZ effectively in both secondary outlet water and tap water. However, high concentrations of inorganic ions (Cl⁻, HCO ⁻₃ , HPO ²⁻₄ , SO ²⁻₄ , NO ⁻₃ ) and natural organic matter (humic acid, HA) could inhibit the degradation of CBZ. After three cycles, the stability of the LCO/NaHSO₃ system was demonstrated by the maintained high efficiency in the degradation of CBZ. The obtained data indicate that the LCO/NaHSO₃ system holds great application potential in the field of advanced oxidation degradation of pollutants.

最大限度地可持续回收废旧锂离子电池（LIB）具​​有经济和环境意义。这项研究从废锂离子电池正极粉末中回收了钴酸锂（LiCoO _{2 ，​​LCO）。然后将回收的LCO与NaHSO 3}结合以去除水中的难降解有机污染物卡马西平(CBZ)。CBZ 在 60 分钟内降解达到 80.0%，通过¹ O ₂、\({\rm{SO}}_4^{ - \cdot }\)、\(^ \cdot {\rm{OH}}\)和LCO/NaHSO _{3反应中生成}\({\rm{O}}_2^{ - \cdot }\)。Co(III)和Co(II)之间的电子转移有利于自由基的产生。LCO/NaHSO ₃可以有效降解二次出水和自来水中的CBZ。然而，高浓度的无机离子（Cl ^-、HCO ^- ₃、HPO ²⁻ ₄、SO ²⁻ ₄、NO ^- ₃）和天然有机物（腐殖酸，HA）会抑制CBZ的降解。_{经过三个循环后，LCO/NaHSO 3}系统的稳定性通过CBZ的高效降解得到了证明。所得数据表明LCO/NaHSO ₃体系在污染物高级氧化降解领域具有巨大的应用潜力。