Cerium binding activity of different pectin compounds in aqueous solutions

被引：25

作者：

Khotimchenko, Maxim Y. ^{[1
]}

Kolenchenko, Elena A. ^{[2
]}

Khotimchenko, Yuri S. ^{[2
]}

Khozhaenko, Elena V. ^{[1
]}

Kovalev, Valeri V. ^{[2
]}

机构：

[1] Vladivostok State Med Univ, Dept Pharmacol, Vladivostok 690990, Russia

[2] Russian Acad Sci, Far E Branch, Inst Marine Biol, Pharmacol Lab, Vladivostok 690041, Russia

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2010年 / 77卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

Cerium; Equilibrium study; Pectin; Degree of esterification; Wastewater; RHEOLOGICAL BEHAVIOR; ADSORPTION; EQUILIBRIUM; KINETICS; IONS; ABSORPTION; CHITOSAN; REMOVAL; CALCIUM; ZN(II);

D O I：

10.1016/j.colsurfb.2010.01.015

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Cerium binding activity of different water soluble pectin compounds varying according to their degree of esterification and insoluble calcium pectate beads in aqueous solution was studied in a batch sorption system. The cerium uptake by all pectin compounds was highest within the pH range from 4.0 to 6.0. The binding capacities and rates of cerium ions by pectin compounds were evaluated. The Langmuir, Freundlich and BET sorption models were applied to describe the isotherms and constants. Sorption isothermal data could be well interpreted by the Langmuir equation. The results obtained through the study suggest that pectin compounds are favorable sorbents. The largest amount of cerium ions is bound by pectin with the degree of esterification close to zero. Therefore, it can be concluded that low esterified pectins are more effective substances for elimination of cerium ions from aqueous disposals. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：104 / 110

页数：7

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