Related Experiment Video
Updated: Jun 16, 2026

Utilizing the Ethylene-releasing Compound, 2-Chloroethylphosphonic Acid, as a Tool to Study Ethylene Response in Bacteria
Published on: November 10, 2016
Cerium binding activity of different pectin compounds in aqueous solutions
Maxim Y Khotimchenko1, Elena A Kolenchenko, Yuri S Khotimchenko
1Department of Pharmacology, Vladivostok State Medical University, Primorskiy krai, Russia. maxkhot@yandex.ru
Abstract:
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.
Related Concept Videos
Cellulose and Pectic Polysaccharides
As a cell matures, its cell wall specializes according to its type. For example, the parenchyma cells of...
EDTA: Chemistry and Properties
Complexometric Titration: Ligands
Complexation Equilibria: The Chelate Effect
EDTA: Conditional Formation Constant
For the equilibrium reaction of the metal with the Y4− form of EDTA, the formation...
Ion-Exchange Chromatography

