Selected Fe and Mn (nano)oxides as perspective amendments for the stabilization of As in contaminated soils

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F16%3A70215" target="_blank" >RIV/60460709:41330/16:70215 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11356-016-6200-9" target="_blank" >http://dx.doi.org/10.1007/s11356-016-6200-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11356-016-6200-9" target="_blank" >10.1007/s11356-016-6200-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Selected Fe and Mn (nano)oxides as perspective amendments for the stabilization of As in contaminated soils

Popis výsledku v původním jazyce

An amorphous Mn oxide (AMO), nanomaghemite, and nanomagnetite were used as potential amendments reducing the mobility of As in three contrasting contaminated soils differing in origin of As contamination. Adsorption experiments and XPS analyses combined with incubation batch experiments and pH-static leaching tests were used. The AMO showed excellent adsorption capacity for As(V) reaching a maximum of 1,79 mmol g-1 at pH 7 and 8. Interestingly, the adsorption capacity in this case decreases with decreasing pH, probably as a result of AMO dissolution at lower pH values. Chemical sorption of As(V) onto AMO was further confirmed with XPS. Both Fe nano-oxides proved the highest adsorption capacity at pH 4 reaching 11 mg g-1 of adsorbed As(V). The AMO was also the most efficient amendment for decreasing As concentrations in soil solutions during 8 weeks of incubation. Additionally, pH-static leaching tests were performed at pH 4, 5, 6, 7, and natural pH (not adjusted) and AMO again proved the highest abil

Název v anglickém jazyce

Selected Fe and Mn (nano)oxides as perspective amendments for the stabilization of As in contaminated soils

Popis výsledku anglicky

An amorphous Mn oxide (AMO), nanomaghemite, and nanomagnetite were used as potential amendments reducing the mobility of As in three contrasting contaminated soils differing in origin of As contamination. Adsorption experiments and XPS analyses combined with incubation batch experiments and pH-static leaching tests were used. The AMO showed excellent adsorption capacity for As(V) reaching a maximum of 1,79 mmol g-1 at pH 7 and 8. Interestingly, the adsorption capacity in this case decreases with decreasing pH, probably as a result of AMO dissolution at lower pH values. Chemical sorption of As(V) onto AMO was further confirmed with XPS. Both Fe nano-oxides proved the highest adsorption capacity at pH 4 reaching 11 mg g-1 of adsorbed As(V). The AMO was also the most efficient amendment for decreasing As concentrations in soil solutions during 8 weeks of incubation. Additionally, pH-static leaching tests were performed at pH 4, 5, 6, 7, and natural pH (not adjusted) and AMO again proved the highest abil

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DK - Kontaminace a dekontaminace půdy včetně pesticidů

OECD FORD obor

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Projekt

<a href="/cs/project/GA15-07117S" target="_blank" >GA15-07117S: Modelování kompetitivní adsorpce kovů a As na nanooxidy Fe: Implikace pro remediace půd</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

ISSN

0944-1344

e-ISSN

—

Svazek periodika

23

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

14

Strana od-do

10841-10854

Kód UT WoS článku

000377021500048

EID výsledku v databázi Scopus

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