In this study, antibiotic bacteria residues (ABRs) is proposed as a novel green reducing agent and it is found that the reducing agent can realize the efficient recovery of the valuable metals in spent cathode powder (SCP), reduce the environmental pollution and realize the high-value utilization of the biomass waste. The leaching efficiency of Ni, Co, Mn and Li can reach 99.57%, 98.50%, 98.99% and 99.90% respectively under the optimal conditions of 3 mol L⁻¹ H₂SO₄, mass ratio of ABRs to SCP of 0.8:1, liquid/solid ratio of 30:1 mL g⁻¹, the temperature of 363 K and time of 2.5 h. Leaching kinetics results shows that the reaction process is controlled by the chemical reaction with apparent activation energy exceeding than 40 kJ/mol. More importantly, the detailed ABRs leaching mechanism is proposed that the metabolite of CaC₂O₄ and reducing sugar in ABRs provide a synergistic reduction effect on the recovery of valuable metals. Furthermore, acid leaching residue can be regenerated to obtain lithium-ion anode materials with excellent electrochemical properties. The entire process is a sustainable green recycling strategy by using waste ABRs waste to treat spent lithium-ion batteries (LIBs), recovering valuable metals efficiently and minimizing environmental pollution.

在这项研究中，提出了一种新型的绿色还原剂抗生素细菌残留物（ABRs），发现该还原剂可以有效地回收废阴极粉（SCP）中的有价金属，减少环境污染并实现环保。高价值利用生物质废物。在3 mol L ^-1 H ₂ SO ₄，ABR与SCP的质量比为0.8：1的最佳条件下，Ni，Co，Mn和Li的浸出效率分别达到99.57％，98.50％，98.99％和99.90％。，液/固比为30：1 mL g ^-1，温度363 K，时间2.5 h。浸出动力学结果表明，反应过程受化学反应控制，表观活化能超过40 kJ / mol。更重要的是，提出了详细的ABR浸出机理，即ABR中CaC ₂ O ₄的代谢产物和还原糖对贵金属的回收具有协同的还原作用。此外，可以再生酸浸残余物以获得具有优异电化学性能的锂离子负极材料。整个过程是一种可持续的绿色回收策略，通过使用废弃的ABR废料处理废锂离子电池（LIB），有效地回收有价值的金属并最大程度地减少环境污染。