The potential use of PVA-mixed-valent tunnel structured manganese oxide nano-composite in the removal of multi-contaminants form aqueous solutions was assessed by studying the continuous simultaneous removal of lead, caesium, and cobalt. Within this context, the morphology and the nature of nanoparticle inclusion into the PVA matrix was assessed using SEM–EDX analysis. The nanoparticles are homogenously distributed in the polymeric matrix with some agglomerated inclusions of these particles. The thermal and chemical stability analyses prove the stability of the material up to 180 °C and in slightly acidic to slightly alkaline solutions. The analysis of the gravimetric thermal data shows that the thermal treatment is a feasible end of life management route for this material. The values of percentage uptake and bed capacity indicate the feasibility of the use of this material in the simultaneous removal of lead, caesium and cobalt. The breakthrough curves analyses provide insights into the breakthrough characteristics and underlying removal mechanisms. It was found that the removal reaction follows Langmuir kinetics of adsorption–desorption and that the rate driving forces follow second order reversible reaction kinetics, where the sorption occur at energetically equal sites.

通过研究连续同时去除铅、铯和钴，评估了 PVA 混合价隧道结构氧化锰纳米复合材料在去除水溶液中多种污染物方面的潜在用途。在此背景下，使用 SEM-EDX 分析评估了 PVA 基质中纳米粒子的形态和性质。纳米粒子均匀地分布在聚合物基质中，并且这些粒子具有一些附聚的内含物。热稳定性和化学稳定性分析证明该材料在高达 180°C 的温度以及微酸性至微碱性溶液中的稳定性。重量热数据分析表明，热处理是该材料可行的寿命终止管理途径。吸收百分比和床容量的值表明使用该材料同时去除铅、铯和钴的可行性。突破曲线分析提供了对突破特征和潜在去除机制的深入了解。研究发现，去除反应遵循吸附-解吸的朗缪尔动力学，速率驱动力遵循二阶可逆反应动力学，其中吸附发生在能量相等的位点。