Manganese was leached from a low-grade manganese ore (LGMO) using banana peel as the reductant in a dilute sulfuric acid medium. The effects of banana peel amount, H₂SO₄ concentration, reaction temperature, and time on Mn leaching from the complex LGMO were studied. A leaching efficiency of ∼98% was achieved at a leaching time of 2 h, banana peel amount of 4 g, leaching temperature of 120°C, manganese ore amount of 5 g, and sulfuric acid concentration of 15vol%. The phase, microstructural, and chemical analyses of LGMO samples before and after the leaching process confirmed the successful leaching of manganese. Furthermore, the leaching process followed the shrinking core model and the leaching rate was controlled by a surface chemical reaction (1 − (1 − x)^1/3 = kt) mechanism with an apparent activation energy of 40.19 kJ·mol⁻¹.

在稀硫酸介质中，使用香蕉皮作为还原剂从低品位锰矿石（LGMO）中浸出锰。研究了香蕉皮量，H ₂ SO ₄浓度，反应温度和时间对复合LGMO中锰浸出的影响。在2h的浸出时间，4g的香蕉皮浸出量，120℃的浸出温度，5g的锰矿石量和15vol％的硫酸浓度下实现了〜98％的浸出效率。LGMO样品在浸出之前和之后的阶段，微观结构和化学分析证实了锰的成功浸出。此外，浸出过程遵循收缩核模型，且浸出速率由表面化学反应控制（1-（1-- x）^1/3 = kt）机理，其表观活化能为40.19 kJ·mol ^-1。