期刊论文

Cheng, Y.

中文

环境工程学报

1673-9108

2022

16

7

2165-2177

10.12030/j.cjee.202202014

湖南省重点领域研发计划项目(2019SK2281)。

本校为第一机构

为实现芬顿污泥的有效处置,开发了一种基于煅烧芬顿污泥制备磁性吸附剂的回收利用方法,通过进一步酸改性优化吸附性能,用于去除水中的Sb(Ⅴ)。结果表明, 350 ℃煅烧并以硫酸改性的磁性吸附剂(AFS350)具有粗糙的多介孔结构和较大的比表面积,主要成分为Fe_3O_4和碳;准二级动力学模型、Elovich动力学模型、颗粒内扩散模型、Freundlich和Temkin等温吸附模型对AFS350吸附Sb(Ⅴ)拟合效果好,表明吸附为多层异质化学吸附,吸附速率由膜扩散和颗粒内扩散速率共同控制;机理分析认为,AFS350对Sb(Ⅴ)的吸附以形成Fe—O—Sb配位结构的内层络合作用为主。Sb(Ⅴ)的吸附受多因素影响,酸性条件和升温有利于吸附进行...

In order to realize the effective disposal of Fenton sludge, a recycling method based on calcined Fenton sludge to prepare magnetic adsorbent was developed, and the adsorption performance was further optimized by acid modification, which was used to remove Sb(V) in water. The results showed that the magnetic adsorbent (AFS350) calcined at 350 ℃ and modified with sulfuric acid had a rough mesoporous structure and a large specific surface area, and its main components were Fe3O4 and carbon. The pseudo-second-order kinetic model, Elovich kinetic ...