The increase in nickel and cobalt consumption encourages the exploration of different resources. Limonite ore exploration is carried out through the hydrometallurgical route. After nickel and cobalt separation, the remaining solution contains manganese to be recovered. The present study aimed at the kinetic modeling of manganese precipitation by ozonation. The experiments were carried out in a 250 mL reactor containing an 8-metals sulfated synthetic solution fed by an ozone-oxygen mixture with a bubble diffusor at 21.6–26.0 mg.L⁻¹.min⁻¹ to a total of 2186 mg.L⁻¹ over 90 min. The effects of oxygen flow rate (0.8–10 L.L⁻¹.min⁻¹) and pH (0.5–1.5) varying the ozone dosages and time were studied. Kinetic modeling was performed using linear, Higbie, and pseudo-homogeneous orders. Results showed that the best oxygen flow rate for MnO₂ was 2.0 L.L⁻¹.min⁻¹ achieving 97% of efficiency after dosing 24.3 mg.L⁻¹.min⁻¹ O₃ or 2186 mg.L⁻¹ (ozone applied) for 90 min at pH 1.5 with a power consumption of 80 W.L⁻¹. The reaction was more selective at pH 0.5 in which the highest manganese precipitation of 55.4% and lower amount of contaminants in the solid phase were obtained. The kinetic model study has demonstrated that manganese precipitation using ozone fitted better on the pseudo-homogeneous model, suggesting that the process is controlled by mass transfer, where the calculated constant rates were 0.035, 0.033, and 0.042 min⁻¹ for the experiments carried out at pH 0.5, 1.0 and 1.5, respectively.

镍和钴消耗量的增加鼓励了对不同资源的勘探。褐铁矿的勘探是通过湿法冶金进行的。镍和钴分离后，剩余的溶液包含要回收的锰。本研究旨在通过臭氧化作用对锰进行沉淀的动力学模型。实验是在250mL反应器中进行的，该反应器中装有8-金属硫酸盐合成溶液，该溶液由具有气泡扩散器的臭氧-氧气混合物供入，浓度为21.6-26.0 mg.L ^-1 .min ^-1，总计2186 mg.L ^-1在90分钟内。氧气流速的影响（0.8–10 LL ^-1 .min ^-1）和pH（0.5-1.5）随臭氧剂量和时间的变化进行了研究。动力学建模使用线性，Higbie和伪均质顺序进行。结果表明，对于MnO的最佳氧气流速₂为2.0 LL ^-1 .min ^-1给药后实现效率的97％的24.3 mg.L ^-1 .min ^-1 ö ₃或2186 mg.L ^-1（臭氧施加）在pH 1.5下持续90分钟，功耗为80 WL ^-1。该反应在pH 0.5时更具选择性，其中获得的最高锰沉淀为55.4％，固相中的污染物含量较低。动力学模型研究表明，使用臭氧的锰沉淀更适合拟均相模型，这表明该过程受传质控制，对于所进行的实验，计算出的恒定速率为0.035、0.033和0.042 min ^-1 pH分别为0.5、1.0和1.5。