Detail publikace

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

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

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Reactivity; Polyelectrolytes; Diffusion; Humic acids; Hydrogel

Autoři

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

Rok RIV

2015

Vydáno

20. 7. 2015

ISSN

0045-6535

Periodikum

CHEMOSPHERE

Ročník

138

Číslo

11

Stát

Spojené království Velké Británie a Severního Irska

Strany od

503

Strany do

510

Strany počet

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"
}