Premium
Reactive green HE‐4BD functionalized supermacroporous poly(hydroxyethyl methacrylate) cryogel for heavy metal removal
Author(s) -
Arpa Çiğdem,
Bereli Nilay,
Özdil Elif,
Bektaş Sema,
Denizli Adil
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.32592
Subject(s) - adsorption , metal ions in aqueous solution , nuclear chemistry , methacrylate , metal , aqueous solution , scanning electron microscope , polymerization , materials science , chemistry , polymer chemistry , polymer , composite material , organic chemistry , metallurgy
The aim of this study was to investigate the heavy metal adsorption performance of supermacroporous poly(hydroxyethyl methacrylate) [PHEMA] cryogel. The PHEMA cryogel was produced by cryo‐polymerization. The PHEMA cryogel was characterized by scanning electron microscopy (SEM). The PHEMA cryogel containing 385 μmol Reactive Green HE‐4BD/g were used in the adsorption studies. Adsorption capacity of the PHEMA cryogel for the metal ions, i.e., Cu 2+ , Cd 2+ , and Pb 2+ were investigated in aqueous media containing different amounts of the ions (5–600 mg/L) and at different pH values (3.2–6.9). The maximum adsorption capacities of the PHEMA cryogel were 11.6 mg/g (56 μmol/g) for Pb 2+ , 24.5 mg/g (385 μmol/g) for Cu 2+ and 29.1 mg/g (256 μmol/g) for Cd 2+ . The competitive adsorption capacities were 10.9 mg/g (52 μmol/g) for Pb 2+ , 22.1 mg/g for Cd 2+ (196 μmol/g) and 23.2 mg/g (365 μmol/g) for Cu 2+ . The PHEMA/Reactive Green HE‐4BD cryogel exhibited the following metal ion affinity sequence on molar basis: Cu 2+ > Cd 2+ > Pb 2+ . The PHEMA/Reactive Green HE‐4BD cryogel can be easily regenerated by 50 m M EDTA with higher effectiveness. These features make the PHEMA/Reactive Green HE‐4BD cryogel a potential adsorbent for heavy metal removal. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010