A simple and fast method based on activated carbon@nanozerovalent iron–nickel (AC@nZVI/Ni) nanoadsorbent was developed for highly efficient removal of Reactive Orange 16 (RO16) from aqueous samples. AC@nZVI/Ni nanoadsorbent was characterized by FT-IR, XRD, SEM and EDX. Effects of diverse factors including the solution value, adsorption time, AC@nZVI/Ni dosage and initial RO16 concentration were explored via experimental design methodology, and the highest removal percentage of 100% was obtained under the optimal conditions. Langmuir and Freundlich models were employed to interpret the equilibrium adsorption data by utilizing different initial concentrations of RO16. The data are fitted to the Langmuir model, with a maximum adsorption capacity of 10.53 mg g⁻¹ and a Langmuir constant of 13.51 L mg⁻¹. The kinetic data were fitted to the pseudo-second-order model. Finally, thermodynamic study was accomplished at diverse temperatures and the data revealed an exothermic nature.

开发了一种基于活性炭@纳米零价铁-镍（AC @ nZVI / Ni）纳米吸附剂的简单快速的方法，用于从水性样品中高效去除活性橙16（RO16）。通过FT-IR，XRD，SEM和EDX对AC @ nZVI / Ni纳米吸附剂进行了表征。通过实验设计方法探索了溶液值，吸附时间，AC @ nZVI / Ni用量和初始RO16浓度等多种因素的影响，在最佳条件下获得了最高去除率100％。使用Langmuir和Freundlich模型通过利用不同的RO16初始浓度来解释平衡吸附数据。数据符合Langmuir模型，最大吸附容量为10.53 mg g ^-1，Langmuir常数为13.51 L mg ^-1。动力学数据拟合到伪二级模型。最后，在不同温度下完成了热力学研究，数据显示出放热性质。