The innocent disposal and resourceful restoration of spent lithium-ion batteries is an inevitable alternative to guard the setting, preserve assets and promote the event of the round financial system. A scientific, inexperienced, and sustainable recycling course of for waste LiFePO₄ batteries is proposed based mostly on malic acid. The strategy employs naturally degradable natural acids as an alternative of conventional inorganic acid leaching, lowering the unfavourable influence on the setting. Below the optimized situation, 99.12% Li is extracted, whereas lower than 1% Fe is leached. This fraction of iron ions is cleverly employed as a catalyst to advertise the leaching effectivity of lithium. Moreover, the iron by-products from the purification course of are used for As(III) adsorption and present stunning arsenic elimination properties. A minor quantity of P within the leachate is recovered as Li₃PO₄, and most Li is collected as Li₂CO₃ with 99.63% purity. In the end, the LiFePO₄ cathode materials is regenerated from the obtained Li₂CO₃ product and FePO₄ residue. In contrast with the normal methodology, this course of deserves environment friendly lithium-iron separation, environmental friendliness, and financial effectivity.