Detail publikace

BEHAVIOUR OF HUMIC ACIDS IN WATER AND AQUEOUS SOLUTIONS

KLUČÁKOVÁ, M. ČECHOVÁ, E. BACHRATÁ, R. PEKAŘ, M.

Originální název

BEHAVIOUR OF HUMIC ACIDS IN WATER AND AQUEOUS SOLUTIONS

Typ

kapitola v knize

Jazyk

angličtina

Originální abstrakt

Behaviour of various humic samples in water and aqueous solutions is studied in this chapter. Although humic acids are operationally defined as that fraction of humic substances, which is not soluble under acidic conditions, it does not mean that the solid preparation easily dissolves in water. Presented results suggest that dissolving of solid humic acids in water environment is more complex than conventional solubility behaviour of sparingly soluble solids. Multi-step mechanism of solid humic acids interaction with water, including partial equilibrium dissolution as well as direct equilibrium dissociation from the solid state, was proposed and proved experimentally. Only a very small part of solid humic acids can be dissolved in water and not giving necessarily saturation at the same time. Washing out experiments show that only a certain maximum of soluble fraction can exist in all used humic samples. Other experiments confirm that the dissolution of humic particles is significantly affected by the presence of carboxylic acids. The results indicate that the acids and related compounds may affect markedly the mobility and transport of humic substances in the environment. Experimental data further demonstrate that regardless the common mechanism, solubility and dissociation degree of various humic samples may be very different and can be estimated using the parameters of model based on the proposed mechanism.

Klíčová slova

humic acid, dissociation, solubility, polyelectrolytes

Autoři

KLUČÁKOVÁ, M.; ČECHOVÁ, E.; BACHRATÁ, R.; PEKAŘ, M.

Rok RIV

2010

Vydáno

18. 11. 2010

Nakladatel

Nova Science Publishers, Inc.

Místo

New York

ISBN

978-1-60741-761-3

Kniha

Solid Waste Management and Environmental Remediation

Edice

Environmental Remediation: Regulatory Requirements, Site Assessment and Health Effects

Číslo edice

1

Strany od

453

Strany do

465

Strany počet

12

BibTex

@inbook{BUT55931,
  author="KLUČÁKOVÁ, M. and ČECHOVÁ, E. and BACHRATÁ, R. and PEKAŘ, M.",
  title="BEHAVIOUR OF HUMIC ACIDS IN WATER AND AQUEOUS SOLUTIONS",
  booktitle="Solid Waste Management and Environmental Remediation",
  year="2010",
  publisher="Nova Science Publishers, Inc.",
  address="New York",
  series="Environmental Remediation: Regulatory Requirements, Site Assessment and Health Effects",
  edition="1",
  pages="453--465",
  isbn="978-1-60741-761-3"
}