Related Experiment Video
Updated: Jun 21, 2026

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter
Published on: July 13, 2018
Removal of potassium chloride by nanofiltration from ion-exchanged solution containing potassium clavulanate
Hyun Han Kim1, Jae Hyung Kim, Yong Keun Chang
1Technology and Industry Department, Samsung Economic Research Institute, 1321-15, Seocho 2-dong, Seocho-gu, Seoul 137-955, Korea.
Abstract:
In this study, nanofiltration with NF200 membrane was employed to remove KCl from ion-exchanged solutions containing potassium clavulanate. The pore radius of NF200 membrane was estimated to be around 0.39 nm. The effects of operating pressure on separation performance were investigated in a range of 100-400 psig. The influences of cross-flow velocity (0.14-0.70 cm/s), temperature (4-25 degrees C), and feed composition were also investigated. In all experiments, clavulanate rejection showed high levels from 0.91 to 0.99, while chloride rejection ranged from 0.06 to 0.54. In a case at an operating pressure of 50 psig and 25 degrees C, as much as 94% of clavulanate was retained while 94% of chloride was removed, indicating that NF200 membrane was a suitable choice for selectively removing KCl. NF200 membrane also showed a stable performance in the operational stability test with an ion-exchanged solution obtained by treating actual fermentation broth.
More Related Videos
08:06Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone
Published on: February 23, 2017
10:19Three-Dimensionally Printed Microfluidic Cross-flow System for Ultrafiltration/Nanofiltration Membrane Performance Testing
Published on: February 13, 2016
Related Concept Videos
Ion Exchange
Ion-Exchange Chromatography
Reabsorption and Secretion in the Loop of Henle
Drug Elimination by Renal Route: Tubular Reabsorption
Dialysis
Extracorporeal Removal of Drugs: Hemoperfusion and Hemofiltration