Publication detail

On the role of humic acids' carboxyl groups in the binding of charged organic compounds

SMILEK, J. SEDLÁČEK, P. KALINA, M. KLUČÁKOVÁ, M.

Original Title

On the role of humic acids' carboxyl groups in the binding of charged organic compounds

Type

journal article in Web of Science

Language

English

Original Abstract

Interactions of humic acids (HAs) with two cationic dyes (methylene blue and rhodamine 6G) were studied using a unique combination of diffusion and partitioning studies in HAs, containing hydrogels and batch sorption experiments. In order to investigate the involvement of carboxyl groups of HAs in these interactions, all experiments were performed for both, the original lignite HAs and HAs with selectively methylated carboxyls. The results of the diffusion experiments confirm that the interactions between the solute and humic substances have a strong impact on the rate of diffusion process. Surprisingly, the effect is almost equally approved for original and methylated HAs. On the other hand, the results of batch sorption experiments show strong improvement of the sorption capacity (methylated HAs), which is explained by changed morphology of alkylated HAs. The comparison of the results of diffusion and adsorption experiments shows that the diffusion experiments simulate the transport of solutes in natural humics containing environment more reasonably.

Keywords

Reactivity; Polyelectrolytes; Diffusion; Humic acids; Hydrogel

Authors

SMILEK, J.; SEDLÁČEK, P.; KALINA, M.; KLUČÁKOVÁ, M.

RIV year

2015

Released

20. 7. 2015

ISBN

0045-6535

Periodical

CHEMOSPHERE

Year of study

138

Number

11

State

United Kingdom of Great Britain and Northern Ireland

Pages from

503

Pages to

510

Pages count

8

URL

http://dx.doi.org/10.1016/j.chemosphere.2015.06.093

BibTex

@article{BUT115378,
  author="Jiří {Smilek} and Petr {Sedláček} and Michal {Kalina} and Martina {Klučáková}",
  title="On the role of humic acids' carboxyl groups in the binding of charged organic compounds",
  journal="CHEMOSPHERE",
  year="2015",
  volume="138",
  number="11",
  pages="503--510",
  doi="10.1016/j.chemosphere.2015.06.093",
  issn="0045-6535",
  url="http://dx.doi.org/10.1016/j.chemosphere.2015.06.093"
}