Zinc-binding activity of different pectin compounds in aqueous solutions

被引：52

作者：

Khotimchenko, M. Y. ^{[1
]}

Kolenchenko, E. A. ^{[2
]}

Khotimchenko, Y. S. ^{[2
]}

机构：

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

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

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2008年 / 323卷 / 02期

关键词：

zinc; equilibrium study; pectin; degree of esterification; waste water;

D O I：

10.1016/j.jcis.2008.04.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The zinc-binding activity of different water-soluble pectin compounds varying according to their degree of esterification and of insoluble calcium pectate beads in aqueous solution was studied in a batch sorption system. The zinc uptake by all pectin compounds was highest within the pH range from 4.0 to 7.0. The binding capacities and rates of zinc ions by pectin compounds were evaluated. The Langmuir, Freundlich, and BET sorption models were applied to describe the isotherms and constants. Sorption isotherm data could be well interpreted by the Langmuir equation. The results obtained through the study suggest that pectin compounds are favorable sorbents. The largest number of zinc ions are 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 zinc ions from aqueous disposals. (c) 2008 Elsevier Inc. All rights reserved.

引用

页码：216 / 222

页数：7

共 30 条

[1]

AFANASYEV SP, 1984, KHIM PRIR SOEDIN+, P428

[2]

ANGER H, 1986, CARBOHYD RES, V6, P195

[3]

[Anonymous], 2003, SORPTION BIOSORPTION

[4] NEW METHOD FOR QUANTITATIVE-DETERMINATION OF URONIC ACIDS [J].

BLUMENKR.N ;

ASBOEHAN.G .

ANALYTICAL BIOCHEMISTRY, 1973, 54 (02) :484-489

[5] UPTAKE OF PB2+ AND CU2+ BY NOVEL BIOPOLYMERS [J].

DEANS, JR ;

DIXON, BG .

WATER RESEARCH, 1992, 26 (04) :469-472

[6]

DELMARGOMEZTAMA.M, 2007, J HAZARD MATER, DOI DOI 10.1010/J.JHAZMAT.2007.08.012

[7]

DONGOWSKI G, 1997, NONDIGESTIBLE OLIGOS, P151

[8]

EMSLEY J, 1989, ELEMENTS, P213

[9] BIOLOGICAL INTERACTIONS BETWEEN POLYSACCHARIDES AND DIVALENT CATIONS - EGG-BOX MODEL [J].

GRANT, GT ;

MORRIS, ER ;

REES, DA ;

SMITH, PJC ;

THOM, D .

FEBS LETTERS, 1973, 32 (01) :195-198

[10] A study of the rheological behavior of scleroglucan weak gel systems [J].

Grassi, M ;

Lapasin, R ;

Pricl, S .

CARBOHYDRATE POLYMERS, 1996, 29 (02) :169-181

← 1 2 3 →