The volatilization of arsenic (As) pollutes the environment; thus, it must be removed before preparing a germanium (Ge) concentrate. This study examined the As removal from tannin‑germanium complex (TGC) augmented by ultrasound and revealed the reaction scheme in the As removal process. Parameters such as ultrasound power, sulfuric acid (H₂SO₄) concentration, particle size, liquid solid ratio, and reaction temperature were studied systematically. Experimental results showed that the maximum As removal efficiency augmented by ultrasound was 92.0% under the optimum purifying parameters of ultrasound power of 225 W, H₂SO₄ concentration of 20 g/L, particle sizes of 74–96 μm, liquid solid ratio of 7/1 mL/g, reaction temperature of 40 °C, and reaction time of 30 min. This removal efficiency is 11.2% higher than those of conventional methods under the same reaction conditions. The loss rate of Ge was only 4.9% under the optimal reaction conditions. Mechanism analysis showed that ultrasound can destroy the packaging structure of the raw materials and enhance the porosity, thus strengthen the reaction kinetics.

砷（As）的挥发会污染环境；因此，必须在制备锗 (Ge) 精矿之前将其去除。本研究检查了超声波增强的单宁锗复合物 (TGC) 中 As 的去除率，并揭示了 As 去除过程中的反应方案。系统研究了超声功率、硫酸(H ₂ SO ₄ )浓度、粒径、液固比、反应温度等参数。_{实验结果表明，在超声波功率为225 W、H 2} SO ₄的最佳净化参数下，超声波增强的As去除率最大为92.0%。浓度20 g/L，粒径74-96 μm，液固比7/1 mL/g，反应温度40 ℃，反应时间30 min。该去除效率比相同反应条件下的常规方法提高11.2%。在最佳反应条件下，Ge的损失率仅为4.9%。机理分析表明，超声波可以破坏原料的包装结构，提高孔隙率，从而增强反应动力学。