Adsorptive Removal of Lead Ions in Aqueous Solution by Kapok-Polyacrylonitrile Nanocomposites

被引：16
作者：
Balela, M. D. L. [1 ]
Intila, N. M. [1 ]
Salvanera, S. R. [1 ]
机构：
[1] Univ Philippines, Dept Min Met & Mat Engieering, Sustainable Elect Mat Grp, Quezon City 1101, Philippines
来源：
MATERIALS TODAY-PROCEEDINGS | 2019年 / 17卷
关键词：
Lead adsorption; Kapok fibers; Polyacrylonitrile; In situ polymerization; WASTE-WATER; METHYL-ORANGE; FIBERS; FABRICATION; COMPOSITES; HYDROLYSIS; PAPER;
D O I：
10.1016/j.matpr.2019.06.349
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, the naturally hydrophobic kapok fibers were modified with polyacrylonitrile (PAN) to reverse its wetting property for adsorption of lead (Pb) ions in aqueous solution. Increasing the initial amount of the acrylonitrile (AN) monomer in solution resulted in thicker PAN coating on the surface of the kapok fibers after in situ polymerization. Consequently, the static water contact angle of the nanocomposite was reduced to zero. The kapok-PAN nanocomposites were then used for adsorption of lead (Pb) II in aqueous solution. Adsorption capacities for Pb(II) increased from 22.05 to 26.81 mg/g with higher AN concentration. Hydrolysis of the kapok-PAN nanocomposite was performed by immersing in a sodium hydroxide (NaOH) solution, which results to significantly enhanced adsorption of about 78.34 mg/g. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：672 / 678
页数：7
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