Trioctyl methyl ammonium chloride-impregnated resins (TOMAC-IRs) were synthesized and utilized to efficiently separate and recover vanadium from acidic vanadium-containing solution, and the main factors affecting the adsorption properties of V(V) were studied. Under the optimal conditions, that is, initial pH of 1.8, liquid–solid ratio (L/S) of 200:1 mL/g, impregnation ratio of 18.4%, initial vanadium concentration of 1500 mg/L, and adsorption time of 4 h, the adsorption capacity towards V(V) can reach 78.65 mg/g, and impurity ions (Al and Fe) can be hardly adsorbed. The adsorption of V(V) onto TOMAC-IRs conforms to the Langmuir isotherm adsorption model, indicating that V(V) is adsorbed as a monolayer on TOMAC-IRs. The pseudo-second order kinetic model fits better towards the adsorption processes of V(V), which shows that the adsorption process is dominated by chemical adsorption. The desorption and regeneration of the TOMAC-IRs can be accomplished in just one step using 6 mol/L NaOH; in the meanwhile, the adsorption capacity is 98.01% of the original value after six cycles, demonstrating that the TOMAC-IRs have good stability during the cyclic adsorption of V(V).

合成并利用三辛基甲基氯化铵浸渍树脂（TOMAC-IRs）从酸性含钒溶液中高效分离回收钒，研究了影响V(V)吸附性能的主要因素。在最佳条件下，即初始pH为1.8，液固比（L/S）为200:1 mL/g，浸渍率为18.4%，初始钒浓度为1500 mg/L，吸附时间为4 h，对V(V)的吸附容量可达78.65mg/g，几乎不能吸附杂质离子(Al和Fe)。V(V)在TOMAC-IRs上的吸附符合Langmuir等温吸附模型，表明V(V)以单层形式吸附在TOMAC-IRs上。伪二级动力学模型更适合于 V(V) 的吸附过程，这表明吸附过程以化学吸附为主。TOMAC-IRs的解吸和再生只需使用6 mol/L NaOH一步即可完成；同时，六次循环后吸附容量为原始值的98.01%，表明TOMAC-IRs在V(V)循环吸附过程中具有良好的稳定性。