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

页码：360 / 364

页数：5

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