Diffusivity of Cu(II) ions in humic gels - influence of reactive functional groups of humic acids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F15%3APU115321" target="_blank" >RIV/00216305:26310/15:PU115321 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.colsurfa.2015.05.041" target="_blank" >http://dx.doi.org/10.1016/j.colsurfa.2015.05.041</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.colsurfa.2015.05.041" target="_blank" >10.1016/j.colsurfa.2015.05.041</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Diffusivity of Cu(II) ions in humic gels - influence of reactive functional groups of humic acids

Popis výsledku v původním jazyce

tThe reactivity and transport properties of metal ions in humic systems are important for understand-ing the role of humic substances in both natural systems and human-driven applications. This work isfocused on the transport and immobilization of Cu(II) ions in hydrogels based on several humic acidsdiffering in the raw materials in which they were present and in the conditions in which they wereisolated. The prepared humic hydrogels contained different amounts of reactive functional groups (withdifferent affinities to metal ions) in order to study the effect of the structure and properties of humic acidsand the selective blocking of carboxylic groups (by methylation) on the mobility and immobilization ofCu(II) ions in the hydrogel structure. An experimental arrangement was selected in order to facilitate aninstantaneous planar source method for data processing based on the determination of the concentrationdistribution of Cu(II) ions in hydrogels. The resulting values of the effective diffusion coefficient includeboth the effect of hydrogel structure and the effect of the reaction between Cu(II) ions and humic acids.The blocking of functional groups was reflected in lower values of diffusivity in comparison to hydrogelsprepared from unmodified humic acids. The isolation procedure for humic acids as well as their propertieswere also confirmed to have an effect on the diffusivity of Cu(II) ions in hydrogels.

Název v anglickém jazyce

Diffusivity of Cu(II) ions in humic gels - influence of reactive functional groups of humic acids

Popis výsledku anglicky

tThe reactivity and transport properties of metal ions in humic systems are important for understand-ing the role of humic substances in both natural systems and human-driven applications. This work isfocused on the transport and immobilization of Cu(II) ions in hydrogels based on several humic acidsdiffering in the raw materials in which they were present and in the conditions in which they wereisolated. The prepared humic hydrogels contained different amounts of reactive functional groups (withdifferent affinities to metal ions) in order to study the effect of the structure and properties of humic acidsand the selective blocking of carboxylic groups (by methylation) on the mobility and immobilization ofCu(II) ions in the hydrogel structure. An experimental arrangement was selected in order to facilitate aninstantaneous planar source method for data processing based on the determination of the concentrationdistribution of Cu(II) ions in hydrogels. The resulting values of the effective diffusion coefficient includeboth the effect of hydrogel structure and the effect of the reaction between Cu(II) ions and humic acids.The blocking of functional groups was reflected in lower values of diffusivity in comparison to hydrogelsprepared from unmodified humic acids. The isolation procedure for humic acids as well as their propertieswere also confirmed to have an effect on the diffusivity of Cu(II) ions in hydrogels.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/LO1211" target="_blank" >LO1211: Centrum materiálového výzkumu na FCH VUT v Brně - udržitelnost a rozvoj</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Colloids and Surfaces A: Physicochemical and Engineering Aspects

ISSN

0927-7757

e-ISSN

1873-4359

Svazek periodika

483

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

162-170

Kód UT WoS článku

000362146200022

EID výsledku v databázi Scopus

2-s2.0-84941744506