Kinetika sorpce kovových iontů na lignitické huminové kyseliny

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F08%3APU75815" target="_blank" >RIV/00216305:26310/08:PU75815 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Kinetics of Sorption of Metal Ions on Lignitic Humic Acids

Popis výsledku v původním jazyce

Affinity of humic acids (HA) to heavy metals is well known. Many authors use copper as model metal for study of interaction with HA due to its high complexation ability and affinity to HA. My previous works showed that classical Langmuir isotherm, whichis frequently used for mathematical description of equilibrium sorption of metal ions on HA and determination of sorption capacity, is connected with some inaccuracies, because it does not take into account the production of hydrogen ions during reactions of metal ions with acidic functional groups on the surface of humic particles. In view of the fact, that Langmuir isotherm is based on kinetics of sorption process, I develop new model for equilibrium sorption of metal ions on HA including splitting ofhydrogen ions in chemical sorption on acidic groups. The model was proved experimentally for sorption of cupric ions. This work deals with kinetics of sorption of cobalt and nickel ions on HA to prove above mentioned new model for metal

Název v anglickém jazyce

Kinetics of Sorption of Metal Ions on Lignitic Humic Acids

Popis výsledku anglicky

Affinity of humic acids (HA) to heavy metals is well known. Many authors use copper as model metal for study of interaction with HA due to its high complexation ability and affinity to HA. My previous works showed that classical Langmuir isotherm, whichis frequently used for mathematical description of equilibrium sorption of metal ions on HA and determination of sorption capacity, is connected with some inaccuracies, because it does not take into account the production of hydrogen ions during reactions of metal ions with acidic functional groups on the surface of humic particles. In view of the fact, that Langmuir isotherm is based on kinetics of sorption process, I develop new model for equilibrium sorption of metal ions on HA including splitting ofhydrogen ions in chemical sorption on acidic groups. The model was proved experimentally for sorption of cupric ions. This work deals with kinetics of sorption of cobalt and nickel ions on HA to prove above mentioned new model for metal

Druh

O - Ostatní výsledky

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů