Walnut shell supported nanoscale Fe0 for the removal of Cu(II) and Ni(II) ions from water

被引：21
作者：
Yang, Facui [1 ]
He, Yuanyuan [1 ]
Sun, Shiqi [1 ]
Chang, Yue [1 ,2 ,3 ]
Zha, Fei [1 ,2 ,3 ]
Lei, Ziqiang [1 ,2 ,3 ]
机构：
[1] Northwest Normal Univ, Coll Chem & Chem Engn, Lanzhou 730070, Gansu, Peoples R China
[2] Minist Educ, Key Lab Ecoenvironm Related Polymer Mat, Lanzhou 730070, Gansu, Peoples R China
[3] Key Lab Polymer Mat Gansu Prov, Lanzhou 730070, Gansu, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2016年 / 133卷 / 16期
基金：
中国国家自然科学基金;
关键词：
adsorption; cellulose and other wood products; fibers; kinetics; magnetism and magnetic properties; ZERO-VALENT IRON; AQUEOUS-SOLUTION; HEAVY-METALS; WASTE-WATER; ADSORPTION; NANOPARTICLES; SAWDUST; PB(II); PARTICLES; COMPOSITE;
D O I：
10.1002/app.43304
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The walnut shell supported nanoscale zero-valent iron (walnut-nZVI) was prepared from sodium borohydride, iron(II) chloride tetrahydrate, and walnut shell by liquid phase chemical reduction and characterized by FTIR, TEM, and XRD. The composites were tested as adsorbent for the removal of Cu(II) or Ni(II) ions. The equilibrium data were analyzed by the Langmuir, Freundlich, Dubinin-Radushkevich, which revealed that Langmuir isotherm was more suitable for describing Cu(II) and Ni(II) ions adsorption than the other two isotherm models. The results indicated that the maximum adsorption capacity was higher than some other modified biomass waste adsorbents under the proposed conditions, were 458.7, 327.9 mgg(-1) for Cu(II) or Ni(II). The adsorption kinetics data indicated that the adsorption fitted well with the pseudo-second-order kinetic model. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43304.
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页数：7
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