The transport of metal ions in hydrogels containing humic acids as active complexation agent

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F18%3APU127587" target="_blank" >RIV/00216305:26310/18:PU127587 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.colsurfa.2018.02.042" target="_blank" >http://dx.doi.org/10.1016/j.colsurfa.2018.02.042</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.colsurfa.2018.02.042" target="_blank" >10.1016/j.colsurfa.2018.02.042</a>

Result language

angličtina

Original language name

The transport of metal ions in hydrogels containing humic acids as active complexation agent

Original language description

The complexation and transport/immobilization abilities of humic acids are the most important environmental qualities of these substances. Therefore, the study of these properties is important for understanding their role both in natural systems and in human-driven applications. This contribution is focused on the diffusion of metal ions (Co, Cu and Ni) studied by means of a diffusion couple, and their immobilization in humic hydrogels. It was found that the diffusion characteristics of metal ions are strongly affected by their reactivity and their initial concentrations. The concentration dependence of Cu diffusivity exhibited a different trend when compared to Co and Ni, which the result of the high affinity of Cu to humic acids. When a metal ion is first complexed by humic acids it is bound in an exchangeable mode, which can be transferred to a nonexchangeable one. Our results indicate that the dynamic equilibrium established in the diffusion process includes mainly Cu ions in an exchangeable mode as a result of their high affinity and the high amount of bound Cu. Their transformation of bound Cu ions in strong Cu-humic complexes is very slow. In contrast, Co and Ni have much lower affinities to humic acids, thus their diffusivities are less affected by their reaction with humic acids.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/LO1211" target="_blank" >LO1211: Materials Research Centre at FCH BUT- Sustainability and Development</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

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

Name of the periodical

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

ISSN

0927-7757

e-ISSN

1873-4359

Volume of the periodical

557

Issue of the periodical within the volume

1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

7

Pages from-to

116-122

UT code for WoS article

000446215900016

EID of the result in the Scopus database

2-s2.0-85043479625