Detail publikace

Study of Sorption of Metal Ions on Lignite and Humic Acids

KLUČÁKOVÁ, M. OMELKA, L.

Originální název

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The adsorption of some heavy metal ions (Co2+, Ni2+ and Cu2+) on modified lignite from South Moravia region was studied. The sorption properties of humic acids isolated from this lignite were also investigated. The kinetics of the adsorption process was described applying the Langmuir theory. The adsorption is considered to be the reaction of second order, the desorption is described by the first order kinetics. Nevertheless, the rate constants have to be taken as effective values, where the influence of the size and the shape of particles is included. The sorption capacity of lignits and humic acids was calculated using Langmuir isotherms. The regression analysis confirmed very good accordance of experimental data with the Langmuir relations. Therefore, it can be concluded that heavy metal ions are predominantly chemically bound to the lignite and humic acids. Simultaneously, substantially higher adsorption ability of humic acids was documented, when compared with that of unmodified or modified lignite.

Klíčová slova

humic acid, lignite, sorption

Autoři

KLUČÁKOVÁ, M.; OMELKA, L.

Rok RIV

2004

Vydáno

1. 1. 2004

Nakladatel

Slovak Academy Press

ISSN

0366-6352

Periodikum

Chemical Papers

Ročník

Číslo

Stát

Slovenská republika

Strany od

170

Strany do

175

Strany počet

BibTex

@article{BUT42155,
  author="Martina {Klučáková} and Ladislav {Omelka}",
  title="Study of Sorption of Metal Ions on Lignite and Humic Acids",
  journal="Chemical Papers",
  year="2004",
  volume="58",
  number="3",
  pages="170--175",
  issn="0366-6352"
}