Arsenic immobilization by nanoscale zero-valent iron

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33155559" target="_blank" >RIV/61989592:15310/15:33155559 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.degruyter.com/view/j/eces.2015.22.issue-1/eces-2015-0002/eces-2015-0002.xml" target="_blank" >http://www.degruyter.com/view/j/eces.2015.22.issue-1/eces-2015-0002/eces-2015-0002.xml</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/eces-2015-0002" target="_blank" >10.1515/eces-2015-0002</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Arsenic immobilization by nanoscale zero-valent iron

Popis výsledku v původním jazyce

Contaminated mine water from the Kank site (Czech Republic) containing arsenic at a concentration of approximately 85 mg/dm(3) was tested in a reaction with elemental iron nanoparticles. In a reductive environment there was a reduction of As to the moresoluble and toxic form of As(III) depending on the pH of the solution. Oxidation of elemental iron creates oxyhydroxides which incorporate As into their structure in the form of mixed complexes and thereby remove and bind dissolved As from the solution.The addition of 0.5 g/dm(3) nZVI to the contaminated water leads to a significant decrease in ORP and concentrations of As to around the detection limit. The pH of the solution is not significantly affected by the addition of nZVI. The main competing anion for co-precipitation is represented by phosphates whose concentration after the addition of nZVI was reduced to 6.5% of the original value. The resulting precipitates were analyzed by XPS, XRF, XRD, SEM-EDX and Mossbauer spectroscopy.

Název v anglickém jazyce

Arsenic immobilization by nanoscale zero-valent iron

Popis výsledku anglicky

Contaminated mine water from the Kank site (Czech Republic) containing arsenic at a concentration of approximately 85 mg/dm(3) was tested in a reaction with elemental iron nanoparticles. In a reductive environment there was a reduction of As to the moresoluble and toxic form of As(III) depending on the pH of the solution. Oxidation of elemental iron creates oxyhydroxides which incorporate As into their structure in the form of mixed complexes and thereby remove and bind dissolved As from the solution.The addition of 0.5 g/dm(3) nZVI to the contaminated water leads to a significant decrease in ORP and concentrations of As to around the detection limit. The pH of the solution is not significantly affected by the addition of nZVI. The main competing anion for co-precipitation is represented by phosphates whose concentration after the addition of nZVI was reduced to 6.5% of the original value. The resulting precipitates were analyzed by XPS, XRF, XRD, SEM-EDX and Mossbauer spectroscopy.

Druh

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

CEP obor

CA - Anorganická chemie

OECD FORD obor

—

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Ecological Chemistry and Engineering S-Chemia I Inzynieria Ekologiczna S

ISSN

1898-6196

e-ISSN

—

Svazek periodika

22

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

15

Strana od-do

45-59

Kód UT WoS článku

000353308700002

EID výsledku v databázi Scopus

—