聚乙二醇
吸附
海藻酸钠
钠
离子
化学
聚乙烯
化学工程
色谱法
核化学
有机化学
工程类
作者
Dao-Ji Wu,Zhimin Gao,Huixue Ren,Jiahui Jiang,Fengxun Tan,Bing Xu
出处
期刊:Journal of Residuals Science & Technology
[DEStech Publications]
日期:2016-01-01
卷期号:13 (S1): S1-S7
标识
DOI:10.12783/issn.1544-8053/13/2/s1
摘要
Novel gel beads were prepared using sodium alginate and polyethylene glycol to remove Pb(II) ions from aqueous solutions. The biopolymeric beads were characterized through scanning electron microscopy and energy-dispersive spectroscopy analyses. Effects of experimental parameters including initial pH, adsorbent dosage, reaction temperature, contact time, and initial metal ion concentration were discussed. The adsorption of Pb(II) ions followed the pseudo-second-order kinetics and fitted the Freundlich adsorption isotherm. Thermodynamic study also suggested that the adsorption reaction was spontaneous and exothermic. Chemical adsorption was found to be the main mechanism of Pb adsorption. The fabricated biosorbent exhibits potential for removal of Pb(II) ions.
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