Dissolution kinetics of Pd and Pt from automobile catalysts by naturally occurring complexing agents

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F11%3A10106527" target="_blank" >RIV/00216208:11310/11:10106527 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985831:_____/11:00434418

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jhazmat.2011.10.051" target="_blank" >http://dx.doi.org/10.1016/j.jhazmat.2011.10.051</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jhazmat.2011.10.051" target="_blank" >10.1016/j.jhazmat.2011.10.051</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dissolution kinetics of Pd and Pt from automobile catalysts by naturally occurring complexing agents

Popis výsledku v původním jazyce

Powder samples prepared from gasoline (Pt, Pd, Rh, new GN/old GO) and diesel (Pt, new DN/old DO) catalysts and recycled catalyst NIST 2556 were tested using kinetic leaching experiments following 1, 12, 24, 48, 168, 360, 720 and 1440-hour interactions with solutions of 20 mM citric acid (CA), 20 mM Na2P4O7 (NaPyr), 1 g L-1 NaCl (NaCl), a fulvic acid solution (FA- DOC 50 mg L-1) and 20 mM CA at pH 3, 4, 5, 6, 7, 8 and 9. The mobilisation of platinum group elements (PGEs) was fastest in solutions of CA and NaPyr. In the other interactions (NaCl, FA), the release of PGEs was probably followed by immobilisation processes, and the interactions were not found to correspond to the simple release of PGEs into solution. Because of their low concentrations, theindividual complexing agents did not have any effect on the speciation of Pd and Pt in the extracts; both metals are present in solution as the complexes Me(OH)2, Me(OH)+. Immobilisation can take place through the adsorption of the positi

Název v anglickém jazyce

Dissolution kinetics of Pd and Pt from automobile catalysts by naturally occurring complexing agents

Popis výsledku anglicky

Powder samples prepared from gasoline (Pt, Pd, Rh, new GN/old GO) and diesel (Pt, new DN/old DO) catalysts and recycled catalyst NIST 2556 were tested using kinetic leaching experiments following 1, 12, 24, 48, 168, 360, 720 and 1440-hour interactions with solutions of 20 mM citric acid (CA), 20 mM Na2P4O7 (NaPyr), 1 g L-1 NaCl (NaCl), a fulvic acid solution (FA- DOC 50 mg L-1) and 20 mM CA at pH 3, 4, 5, 6, 7, 8 and 9. The mobilisation of platinum group elements (PGEs) was fastest in solutions of CA and NaPyr. In the other interactions (NaCl, FA), the release of PGEs was probably followed by immobilisation processes, and the interactions were not found to correspond to the simple release of PGEs into solution. Because of their low concentrations, theindividual complexing agents did not have any effect on the speciation of Pd and Pt in the extracts; both metals are present in solution as the complexes Me(OH)2, Me(OH)+. Immobilisation can take place through the adsorption of the positi

Druh

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

CEP obor

DD - Geochemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA205%2F09%2F0414" target="_blank" >GA205/09/0414: Experimentální studium vstupu platinových kovů do přírodního prostředí laboratorními a in situ zvětrávacími experimenty</a><br>

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Hazardous Materials

ISSN

0304-3894

e-ISSN

—

Svazek periodika

198

Číslo periodika v rámci svazku

—

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

331-339

Kód UT WoS článku

000298778700041

EID výsledku v databázi Scopus

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