期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 685, 期 -, 页码 847-855出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.06.278
关键词
Lignin; Chemical modification; Hydrogel microsphems; Magnetic adsorbent; Water treatment
资金
- Natural Science Foundation of China [31770624, 21776026, 21676039]
- Natural Science Foundation of Liaoning Province [20170540069]
- National Key Research and Development Program of China [2018YFD0400700]
- Program for Liaoning Excellent Talents in University [LR2016058]
- Liaoning BaiQianWan Talents Program [201945]
A low-cost and well-separated approach is introduced for adsorption pollutants in water. Chemical modified lignin is prepared with diethylenetriamine to enhance the reaction activities, then used to prepare lignin derivate magnetic hydrogel microspheres (LDMHMs) via blending with Fe3O4. The LDMHMs are successful prepared by the determination of FT-IR data, and the morphology shown from SEM imagine indicates the LDMHMs are in nanosized. The prepared LDMHMs are used as adsorbents for organic dyes, such as methylene blue (MB), methyl orange (MO) and malachite green (MG), the plateaus data are 43 mg/g, 39 mg/g and 155 mg/g, respectively. For inorganic pollutions, such as Pb2+, Hg2+ and Ni2+, the plateaus data are 33 mg/g, 55 mg/g and 23 mg/g, respectively. The adsorption data of unmodified lignin are 2.6 mg/g (Pb2+), 33 mg/g (Hg2+), 2.1 mg/g (Ni2+), 8 mg/g (MB), 10 mg/g (MG) and 2 mg/g (MO) in the same condition. The adsorbents are recycled by magnetic separation, regenerating from acid condition and reused for multiple cycles. The regeneration ratios are all above 90%, indicating a highly reusability and further reducing the cost of the treatment. (C) 2019 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