In vitro cadmium removal from human serum by Cibacron Blue F3GA–thionein‐complex conjugated affinity membranes

Authors

Fatma Denizli, A. Deni̇zli̇, M. Ca

Published

2000

DOI

10.1002/(SICI)1097-0126(200003)49:3<302::AID-PI366>3.0.CO;2-R

Citations

4

Abstract

A new membrane affinity biosorbent carrying thionein has been developed for selective removal of cadmium ions from human serum. Microporous poly(2-hydroxyethyl methacrylate) (pHEMA) membranes were prepared by photopolymerization of HEMA. The pseudo dye ligand Cibacron Blue F3GA (CB) was covalently immobilized on the pHEMA membranes. Then, the cysteine-rich metallopeptide thionein was conjugated onto the CB-immobilized membrane. The maximum amounts of CB immobilized and thionein conjugated on the membranes were 1.07 µmol cm−2 and 0.92 µmol cm−2, respectively. The hydrophilic pHEMA membrane had a swelling ratio of 58% (w/w) with a contact angle of 45.8 °. CB-immobilized and CB-immobilized–thionein-conjugated membranes were used in the Cd(II) removal studies. Cd(II) ion adsorption appeared to reach equilibrium within 30 min and to follow a typical Langmuir adsorption isotherm. The maximum capacity (q m) of the CB-immobilized membranes was 0.203 (µmol Cd(II)) cm−2 membrane and increased to 1.48 (µmol Cd(II)) cm−2 upon CB–thionein-complex conjugation. The pHEMA membranes retained their cadmium adsorption capacity even after 10 cycles of repeated use. © 2000 Society of Chemical Industry

Cite this article

BibTeX

@article{fatma2000,
  title   = {In vitro cadmium removal from human serum by Cibacron Blue F3GA–thionein‐complex conjugated affinity membranes},
  author  = {Fatma Denizli and A. Deni̇zli̇ and M. Ca},
  doi     = {10.1002/(SICI)1097-0126(200003)49:3<302::AID-PI366>3.0.CO;2-R},
  year    = {2000}
}

← All publications DOI: 10.1002/(SICI)1097-0126(200003)49:3<302::AID-PI366>3.0.CO;2-R