Publication detail

Study of Sorption of Metal Ions on Lignite and Humic Acids

KLUČÁKOVÁ, M. OMELKA, L.

Original Title

Study of Sorption of Metal Ions on Lignite and Humic Acids

Type

journal article - other

Language

English

Original Abstract

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.

Keywords

humic acid, lignite, sorption

Authors

KLUČÁKOVÁ, M.; OMELKA, L.

RIV year

2004

Released

1. 1. 2004

Publisher

Slovak Academy Press

ISBN

0366-6352

Periodical

Chemical Papers

Year of study

58

Number

3

State

Slovak Republic

Pages from

170

Pages to

175

Pages count

6

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"
}