期刊
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
卷 107, 期 -, 页码 336-341出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jaap.2014.02.018
关键词
Zinc borate; Biochar; Ni(II)
资金
- Independent Innovation Foundation of Shandong University [2012JCO29]
- Natural Science Foundation for Distinguished Young Scholars of Shandong Province [JQ201216]
- National Water Special Project [2012ZX07203-004]
In this work, zinc borate (ZB) was employed as flame retardant for preparation of biochar (BC). A series of BC samples were generated by varying the ZB to lotus stalks (LS) ratio (0.25, 0.5 and 1.0) under different temperatures (300, 350 and 400 C) for 1 h. The BCs were analyzed for their surface morphologies, surface areas, surface elemental compositions and yields. The results indicated that, after charring, ZB kept the structures of the produced BCs as its starting material (LS), dramatically enhancing their yields, and promoting their surface oxygen content. The BCs were used as adsorbent for removal of Ni(II) from aqueous solutions. Sorption of Ni(II) on the BCs was enhanced about 3-10 times compared with that of BCs derived from pyrolysis of LS without adding ZB. (C) 2014 Elsevier 13.V. All rights reserved.
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