期刊
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
卷 91, 期 -, 页码 457-467出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jtice.2018.04.018
关键词
Magnetic biochar; Separation; Modification; Palm fiber; Lead (II)
资金
- Fundamental Research Funds for Central Universities of Central South University [1053320171391]
- Hunan Provincial Science and Technology Plan Project, China [2016TP1007]
A novel urea-functionalized magnetic biochar (MBCU) was prepared, characterized and evaluated for removal of lead (II) from aqueous solution. The results of SEM, BET, XPS, FFIR, VSM and Zeta-potential exhibited a successful fabrication of MBCU. The magnetism magnitude of magnetic biochar could simultaneously affect the adsorption and recovery efficiency of lead (II) on magnetic biochar. Hence, the optimum mass ratio range of MBCU was determined to be 1.7:1-2.3:1, which could guarantee high removal (> 73.14%) and recovery (> 78.35%) efficiency. The experimental results indicated that the adsorption isotherm and kinetics were well described by the Sips model and pseudo-second-order model, respectively. The maximum adsorption capacity of lead (II) on MBCU was 188.18 mg/g at 323 K. Five-cycle reusability tests demonstrated MBCU could be effectively recovered and repeatedly used with a small adsorption loss (<20%). Mechanism study demonstrated that the adsorption process involved in electrostatic interaction, ion exchange and complexation. The unique features of its outstanding adsorption performance, reusability and separation efficiency suggested that the magnetic biochar can be potentially applied in elimination of lead (II) from wastewater. (C) 2018 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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