X射线光电子能谱
响应面法
铋
氯化物
材料科学
扫描电子显微镜
化学
化学工程
核化学
冶金
复合材料
色谱法
工程类
作者
Liangjing Zhang,Wei Yu,Yunlong Liu,Shucong Lv,Qianqian Wang,Xiaokun Hu,Yuchen Liu,Zhaojun Dong,Kuangfei Lin,Lusan Liu
标识
DOI:10.1016/j.jece.2023.110868
摘要
Chloride ions, omnipresent environmental pollutants, can have devastating and irreversible effects on sustainable water ecosystems worldwide. Herein, bismuth oxide (Bi2O3) was employed as an antichlor to effectively dislodge chloride, and systematic investigations were conducted to assess the effect of various factors on dechlorination. Response surface methodology with Box-Behnken designs was used to optimise the dechlorination process, and the control parameters were determined by fitting high quality predictive model incorporating saliency variables and interactions. Furthermore, X-Ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Field emission scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDS) were performed to determine the phase composition, micromorphology and binding energy of the dechlorinated products. The optimum parameters for dechlorination, as determined by response surface methodology (RSM), were found to be pH 0.53, bismuth trioxide multiple of 1.48, and initial chloride concentration of 3.62 g/L, giving a theoretical removal rate of 90.0563 %. The data analysis presented provides evidence that response surface methodology is a reliable approach for optimizing the interaction effects of dechlorination process parameters, resulting in improved performance in the removal of almost non-removable chloride.
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