Faculty of Art and Science, Department of Chemistry, Yildiz Technical University, 34220, Istanbul, Türkiye.
Neutec Pharmaceutical, Yildiz Technical University Teknopark, Istanbul, 34220, Türkiye.
Environ Monit Assess. 2024 Oct 1;196(10):996. doi: 10.1007/s10661-024-13175-z.
In this study, cadmium ions were effectively removed from domestic wastewaters using an adsorptive treatment strategy based on γ-AlOOH nanoflowers. A novel, rapid, and simple procedure was developed for the synthesis of the nanoflowers. Characterization studies were performed using X-ray powder diffraction patterns and scanning electron microscope images. The synthesized nanoflowers were utilized as adsorbent in the batch adsorption experiments. The influential parameters of the adsorption process were optimized, and a flame atomic absorption spectrophotometry (FAAS) system was used to determine maximum percent removal of cadmium ions. Matrix-matched calibration strategy, in which the calibration plot was developed in wastewater medium, was utilized for the accurate and precise quantification of cadmium in the effluent samples. The percentage removal efficiency values were calculated between 84 and 98% for different concentrations of cadmium ions in the wastewater samples. Equilibrium data was fitted to the four different linearization methods of the Langmuir isotherm model, as well as the Freundlich isotherm model and Elovich isotherm model. The best fitting was achieved for the Langmuir model with a high R value of 0.9956 and maximum adsorption capacity was calculated as 6.23 mg/g.
在这项研究中，使用基于γ-AlOOH 纳米花的吸附处理策略，从生活废水中有效去除了镉离子。开发了一种新颖、快速且简单的方法来合成纳米花。使用 X 射线粉末衍射图谱和扫描电子显微镜图像进行了表征研究。将合成的纳米花用作批处理吸附实验中的吸附剂。优化了吸附过程的影响参数，并使用火焰原子吸收光谱法（FAAS）系统来确定镉离子的最大去除百分比。在废水介质中开发校准图的基体匹配校准策略用于准确和精确地定量流出样品中的镉。对于废水中不同浓度的镉离子，去除效率百分比值在 84%到 98%之间。平衡数据拟合到 Langmuir 等温模型的四种不同线性化方法以及 Freundlich 等温模型和 Elovich 等温模型。最佳拟合是通过 Langmuir 模型实现的，R 值高达 0.9956，最大吸附容量计算为 6.23 mg/g。
