期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 326, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2023.124691
关键词
Resource recovery; Phosphate; Heavy metal; Core-shell; Adsorbent
This study focuses on the potential application of a core-shell nanorod structure, Al2O3@Fe2O3, for the recovery and removal of phosphate and chromium ions in wastewater treatment. The Al2O3@Fe2O3 nanorods exhibited significantly enhanced adsorption capacities for phosphate and chromium compared to pure aluminum oxide and ferrous oxide samples. This paper provides a comprehensive summary of the potential use of core-shell nanorods in wastewater treatment.
Wastewater and agricultural runoff contain phosphate and chromium ions, which are common pollutants. In particular, industrial wastewater can contain excessive untreated pollutants, leading to eutrophication. Therefore, it is crucial to treat wastewater to recover phosphate ions and remove chromium before releasing it into aquatic systems. In this study, we engineered a core-shell nanorod structure, Al2O3@Fe2O3 via a three-step method. To evaluate the effectiveness of the as-prepared Al2O3@Fe2O3 nanorods, in recovering and removing contaminants, we investigated various factors on phosphate recovery. The Al2O3@Fe2O3 nanorods exhibited a maximum Langmuir adsorption capacity of 106.2 mg/g for the phosphate recovery, which was 11.29 and 1.85 times greater than that of pure aluminum oxide and ferrous oxide samples, respectively. The pseudo-second -order and the Elovich diffusion kinetic models resulted in the greatest correlation constants. Desorption of the phosphate adsorbed on the Al2O3@Fe2O3 sample was effectively achieved using a sodium carbonate solution. Furthermore, our findings revealed that the Al2O3@Fe2O3 sample showed a supreme chromium adsorption capacity of 476.2 mg/g. According to thermodynamic analyses, the route for chromium adsorption was impulsive and endothermic. This paper offers a thorough summary of the potential application of core-shell nanorods in wastewater treatment.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据