Fouling by sulfate ion contamination constitutes a serious problem in the wastewater treatment industry. In this study, we synthesized polymer-assisted metallic nanomaterial and evaluated its adsorption capacity for the removal of sulfate ions from model contaminated water. The surface structural morphology, chemical, elemental, and mineralogical features, as well as functional group interaction of the polyvinyl pyrrolidone (PVP) with the AlNiMn nanomaterial, were ascertained with Field Emission Scanning Electron Microscope (FESEM), Energy Dispersive X-ray Spectroscopy (EDX), X-ray dispersive (XRD), Fourier Transform Infra-red spectroscopy (FTIR). The batch adsorption experiments were carried out to determine the effects of solution pH, agitation speed, the adsorbent dosage, and contact time for the removal of sulfate ions from the synthesized contaminated water using the novel PVP-assisted AlNiMn nanocomposite. The results from experiments showed that the novel polymer assisted nanocomposite adsorbed over 3000 mg/L sulfate ions from the model wastewater with an initial concentration of 5000 mg/L at optimal treatment conditions (of 150 rpm, pH 6, and 60 min contact time). The Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich models were plotted to explain the adsorption isotherm equilibrium. The isotherm models suggest the sulfate adsorption followed the physical sorption mechanism. The experimental results had good fits (R² ≥ 99.5%) with both pseudo-first-order and pseudo-second-order. The polymer-stabilized metallic nanocomposite was proven to have an impressive adsorption capacity for sulfate ions in sulfate-rich wastewaters compared to other previously reported studies. This makes the PVP-AlNiMn nanocomposite to be potentially useful for the pre-treatment of sulfate-rich wastewaters.

硫酸根离子污染造成的污垢在废水处理行业中构成严重的问题。在这项研究中，我们合成了聚合物辅助的金属纳米材料，并评估了其从模型污染水中去除硫酸根离子的吸附能力。通过场发射扫描电子显微镜（FESEM），能量色散X射线光谱仪（ EDX），X射线色散（XRD），傅里叶变换红外光谱（FTIR）。进行分批吸附实验以确定溶液pH值，搅拌速度，吸附剂用量，新型PVP辅助AlNiMn纳米复合材料从合成污水中去除硫酸根离子的时间和接触时间。实验结果表明，该新型聚合物辅助纳米复合材料在最佳处理条件下（150 rpm，pH 6和60分钟接触时间）从模型废水中吸附了3000 mg / L的硫酸根离子，初始​​浓度为5000 mg / L。 。绘制了Langmuir，Freundlich，Temkin和Dubinin-Radushkevich模型以解释吸附等温线平衡。等温线模型表明硫酸盐吸附遵循物理吸附机理。实验结果拟合良好（R 实验结果表明，该新型聚合物辅助纳米复合材料在最佳处理条件下（150 rpm，pH 6和60分钟接触时间）从模型废水中吸附了3000 mg / L的硫酸根离子，初始​​浓度为5000 mg / L。 。绘制了Langmuir，Freundlich，Temkin和Dubinin-Radushkevich模型以解释吸附等温线平衡。等温线模型表明硫酸盐吸附遵循物理吸附机理。实验结果拟合良好（R 实验结果表明，该新型聚合物辅助纳米复合材料在最佳处理条件下（150 rpm，pH 6和60分钟接触时间）从模型废水中吸附了3000 mg / L的硫酸根离子，初始​​浓度为5000 mg / L。 。绘制了Langmuir，Freundlich，Temkin和Dubinin-Radushkevich模型以解释吸附等温线平衡。等温线模型表明硫酸盐吸附遵循物理吸附机理。实验结果拟合良好（R 等温线模型表明硫酸盐吸附遵循物理吸附机理。实验结果拟合良好（R 等温线模型表明硫酸盐吸附遵循物理吸附机理。实验结果拟合良好（R²  ≥99.5％）与两个伪一阶和伪二阶。与其他先前报道的研究相比，已证明聚合物稳定的金属纳米复合材料对富硫酸盐废水中的硫酸根离子具有令人印象深刻的吸附能力。这使得PVP-AlNiMn纳米复合材料可潜在地用于富硫酸盐废水的预处理。