期刊
WATER SCIENCE AND TECHNOLOGY
卷 83, 期 7, 页码 1714-1727出版社
IWA PUBLISHING
DOI: 10.2166/wst.2021.077
关键词
double-layer model; isotherm modeling; Pb-FeONPs; statistical physics model
资金
- Taif University, Taif, Saudi Arabia [TURSP-2020/04]
Size-controlled Pb0.06Fe0.7O3 nanoparticles (Pb-FeONPs) were fabricated by the thermal co-precipitation method and characterized using various techniques. The adsorption of Congo Red (CR) onto Pb-FeONPs was found to follow a pseudo-second-order reaction, with the Langmuir plot showing good fitting and a high Q(max) value. The nanoparticles were successfully regenerated for up to 5 cycles, making them economically viable for wastewater treatment applications.
Size-controlled Pb0.06Fe0.7O3 nanoparticles (Pb-FeONPs) were fabricated by the thermal co-precipitation method and characterized by FE-SEM, EDX, XRD, and IR techniques. The SEM and XRD images showed the average size distribution and average crystallite size of 19.21 nm and 4.9 nm, respectively. The kinetic model of Congo Red (CR) adsorption onto Pb-FeONPs was verified and found to be a pseudo-second-order reaction. The Langmuir plot was better fitted (R-2 = 0.990) than other isotherm models with a Q(max) (mg/g) of 500 for Congo Red (CR) dye in 40 min. The double-layer statistical physics model based on two energies was used to calculate the significant parameters. The n (stoichiometric coefficient) values obtained from the statistical physics double-layer model were found to be 0.599, 0.593, and 0.565, which are less than 1, indicating the multi-docking process. The regeneration of Pb-FeONPs was used for up to 5 cycles effectively, making the material highly economical. The Pb-FeONPs were fruitfully applied for the removal of CR dye from wastewater on a laboratory and industrial scale.
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