Sorption mechanisms of arsenate on Mg-Fe layered double hydroxides: A combination of adsorption modeling and solid state analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F17%3A73837" target="_blank" >RIV/60460709:41330/17:73837 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/17:73583412

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.chemosphere.2016.11.031" target="_blank" >http://dx.doi.org/10.1016/j.chemosphere.2016.11.031</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.chemosphere.2016.11.031" target="_blank" >10.1016/j.chemosphere.2016.11.031</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sorption mechanisms of arsenate on Mg-Fe layered double hydroxides: A combination of adsorption modeling and solid state analysis

Popis výsledku v původním jazyce

Layered double hydroxides have been proposed as effective sorbents for As, but studies investigating adsorption mechanisms usually lack a comprehensive mechanisticmodeling approach. In this work, we propose coupling surface complexation modeling with various spectroscopic techniques. To this end, a series of batch experiments at different pH values were performed. Kinetic data were well fitted by a pseudo-second order kinetic model, and the equilibrium data were fitted by the Freundlich model. Moreover, the pH-dependent As sorption data were satisfactorily fitted by a diffuse layer model, which described the formation of SOAsO3H monodentate and bidentate inner-sphere complexes (S represents a crystallographically-bound group on the surface).

Název v anglickém jazyce

Sorption mechanisms of arsenate on Mg-Fe layered double hydroxides: A combination of adsorption modeling and solid state analysis

Popis výsledku anglicky

Layered double hydroxides have been proposed as effective sorbents for As, but studies investigating adsorption mechanisms usually lack a comprehensive mechanisticmodeling approach. In this work, we propose coupling surface complexation modeling with various spectroscopic techniques. To this end, a series of batch experiments at different pH values were performed. Kinetic data were well fitted by a pseudo-second order kinetic model, and the equilibrium data were fitted by the Freundlich model. Moreover, the pH-dependent As sorption data were satisfactorily fitted by a diffuse layer model, which described the formation of SOAsO3H monodentate and bidentate inner-sphere complexes (S represents a crystallographically-bound group on the surface).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Chemosphere

ISSN

0045-6535

e-ISSN

—

Svazek periodika

2017

Číslo periodika v rámci svazku

168

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

539-548

Kód UT WoS článku

000391897500065

EID výsledku v databázi Scopus

2-s2.0-85006247276