Publication detail

Study of Structure and Properties of Humic and Fulvic Acids. II. Study of Adsorption of Cu2+ Ions to Humic Acids Extracted from Lignite

KLUČÁKOVÁ, M. PEKAŘ, M.

Czech title

Studium struktury a vlastností huminových a fulvinových kyselin. I. Studium adsorpce Cu2+ iontů na huminové kyseliny izolované z lignitu

English title

Study of Structure and Properties of Humic and Fulvic Acids. II. Study of Adsorption of Cu2+ Ions to Humic Acids Extracted from Lignite

Type

journal article - other

Language

en

Original abstract

Equilibrium adsorption of Cu2+ ions from their solutions by partially soluble humic acids (HA) has been studied. HA were obtained from South-Moravia lignite by means of alkaline extraction. Total acidity of HA, determined on the basis of conductometric titration, was used in mathematical description of process kinetics and equilibrium. Adsorbed amount of Cu2+ ions was calculated from their concentration decay in solution, which was measured spectrophotometrically. Multistep mechanism was proposed and used in description of equilibrium and kinetic data. Ideas underlying Langmuir adsorption theory were applied in this analysis. Dependence of adsorption coefficients and apparent rate constants on pH was discussed. FT-IR spectroscopy was used for characterization of the products.

Czech abstract

Adsorpce Cu2+ iontů na huminové kyseliny za různých podmínek

English abstract

Equilibrium adsorption of Cu2+ ions from their solutions by partially soluble humic acids (HA) has been studied. HA were obtained from South-Moravia lignite by means of alkaline extraction. Total acidity of HA, determined on the basis of conductometric titration, was used in mathematical description of process kinetics and equilibrium. Adsorbed amount of Cu2+ ions was calculated from their concentration decay in solution, which was measured spectrophotometrically. Multistep mechanism was proposed and used in description of equilibrium and kinetic data. Ideas underlying Langmuir adsorption theory were applied in this analysis. Dependence of adsorption coefficients and apparent rate constants on pH was discussed. FT-IR spectroscopy was used for characterization of the products.

Keywords in English

Humic acid, adsorption, metal binding ability,

RIV year

2002

Released

01.09.2002

ISSN

0970-0838

Journal

Journal of Polymer Materials

Volume

19

Number

3

Pages count

8

BIBTEX


@article{BUT40920,
  author="Martina {Klučáková} and Lubomír {Lapčík} and Miloslav {Pekař},
  title="Study of Structure and Properties of Humic and Fulvic Acids. II. Study of Adsorption of Cu2+ Ions to Humic Acids Extracted from Lignite",
  journal="Journal of Polymer Materials",
  year="2002",
  volume="19",
  number="3",
  month="September",
  issn="0970-0838"
}