Regeneration of magnetic biochar derived from eucalyptus leaf residue for lead(II) removal

被引：89
|
作者：
Wang, Sheng-ye [1 ]
Tang, Yan-kui [1 ]
Chen, Cheng [1 ]
Wu, Jin-tao [1 ]
Huang, Zhining [1 ]
Mo, Ya-yuan [1 ]
Zhang, Kai-xuan [1 ]
Chen, Ji-bo [2 ]
机构：
[1] Guangxi Univ, Coll Environm Sci & Engn, Nanning 530004, Peoples R China
[2] Environm Protect Dept Guangxi Zhuang Autonomous R, Nanning 530028, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 186卷
基金：
中国国家自然科学基金;
关键词：
Magnetic biochar; Lead adsorption; Adsorbent regeneration; Separation; WASTE-WATER; SORPTION; CONTAMINANTS; DESORPTION; SEPARATION; ADSORPTION; ADSORBENT; CARBON; CYCLES; PB(II);
D O I：
10.1016/j.biortech.2015.03.139
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Regeneration of Pb-loaded magnetic biochar prepared with eucalypts leaf residue was studied by using EDTA-2Na as a regenerant. The desorption efficiency was found to be 84.1% in 120 min with iron leaching amount of 1.1 mg g(-1). Higher S-BET and pore volume were observed in regenerated magnetic biochars and no significant band shifts occurred in FTIR spectra during 6 regeneration cycles. The decrease of Pb(II) adsorption capacity (from 52.4 to 41.5 mg g(-1)) was only found in the first regeneration cycle. Magnetic separation performance of adsorbents was not significantly affected by multiple regeneration cycles. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：360 / 364
页数：5
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