SORPTION FROM MULTICOMPONENT SOLUTIONS ON FREEZE-DRIED CHITOSAN

被引：0

作者：

Tomczak, Elwira ^{[1
]}

Szczerkowska, Dominika ^{[1
]}

机构：

[1] Lodz Univ Technol, Fac Proc & Environm Engn, Ul Wolczanska 215, PL-90924 Lodz, Poland

来源：

ECOLOGICAL CHEMISTRY AND ENGINEERING A-CHEMIA I INZYNIERIA EKOLOGICZNA A | 2010年 / 17卷 / 2-3期

关键词：

chitosan; lyophilization; sorption equilibrium; heavy metal ions;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The process of adsorption in time-variable conditions in a column packed with lyophilized chitosan beads modified with polyvinyl alcohol (CH-PVA), ethylenediaminetetraacetic acid (CH-PVA-EDTA) or 3-chloropropionic acid (CH-PVA-3CPA) was analyzed. Experiments were carried out in a column filled with freeze-dried chitosan beads of diameter phi = 2.5 mm and fed with water ternary solutions of Cu(II), Ni(II) and Zn(II). Sorption efficiency of single ions was analyzed. Additionally, the influence of initial concentration and flow rate was determined. A pseudo-second order equation was used in the description of ion sorption. Sorption equilibrium on freeze-dried chitosan beads with PVA at 25 degrees C in static conditions was determined. Freundlich equation was recommended in this case.

引用

页码：314 / 323

页数：10

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