Characteristics of Adsorption Interactions of Cadmium(II) onto Humin from Peat Soil in Freshwater and Seawater Media

Publons ID36330775
Wos IDWOS:000330961900019
Doi10.1007/s00128-014-1205-x
TitleCharacteristics of Adsorption Interactions of Cadmium(II) onto Humin from Peat Soil in Freshwater and Seawater Media
First AuthorAndreas, Roy; Zhang, Jing;
Last Author
AuthorsAndreas, R; Zhang, J;
Publish DateMAR 2014
Journal NameBULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Citation19
AbstractThe present study examined Cd solubility in pH 2-12 fresh and seawater media with and without humin to determine Cd species composition. The study, based on the Langmuir-Hinshelwood kinetics model, was conducted to determine the kinetic parameters of Cd(II) adsorption onto humin. We employed the Langmuir and Freundlich models to derive thermodynamic parameters. Aquo (Cd(H2O) (6) (2+) ) and chloro- (CdCl+ and CdCl2) complexes were responsible for Cd(II) adsorption onto humin. Results showed Cd as Cd(II) and Cd(H2O) (6) (+2) was water soluble at 2 < pH < 7; with a portion of the soluble Cd precipitating as Cd(OH)(2). The Cd(II) rate constant (k) in freshwater was 0.5 x 10(-3) (min(-1)), occurring in a single phase, while in seawater fast and slow phase values for k were 31.88 x 10(-3) and 6.2 x 10(-3) (min(-1)), respectively. The adsorption curves showed a better fit with the Langmuir than the Freundlich model.
Publish TypeJournal
Publish Year2014
Page Begin352
Page End357
Issn0007-4861
Eissn1432-0800
Urlhttps://www.webofscience.com/wos/woscc/full-record/WOS:000330961900019
AuthorROY ANDREAS, S.Si, M.Si, Ph.D
File14202.pdf