Experimental in Situ Transformation of Pb Smelter Fly Ash in Acidic Soils

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F12%3A10127530" target="_blank" >RIV/00216208:11310/12:10127530 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/12:00387567

Výsledek na webu

<a href="http://dx.doi.org/10.1021/es301474v" target="_blank" >http://dx.doi.org/10.1021/es301474v</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/es301474v" target="_blank" >10.1021/es301474v</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental in Situ Transformation of Pb Smelter Fly Ash in Acidic Soils

Popis výsledku v původním jazyce

Soils in the vicinity of nonferrous metal smelters are often highly polluted by inorganic contaminants released from particulate emissions. We used a technique with double polyamide experimental bags (1-mu m mesh) to study the in situ transformation of fly ash (FA) from a secondary Pb smelter in acidic soil profiles. Between 62 and 66% of the FA dissolved after one year's exposure in the soils, leading to complete dissolution of primary caracolite (Na3Pb2(SO4)(3)Cl) and KPb2Cl5, with formation of secondary anglesite (PbSO4), minor PbSO3, and trace carbonates. Release of Pb was pH-dependent, whereas not for Cd and Zn. Significant amounts of metals (mainly Cd and Zn) partitioned into labile soil fractions. The field data agreed with laboratory pH-staticleaching tests performed on FA, which was washed before the experiment to remove soluble salts. This indicates that appropriate laboratory leaching can accurately predict FA behavior in real-life scenarios (e.g., exposure in soil).

Název v anglickém jazyce

Experimental in Situ Transformation of Pb Smelter Fly Ash in Acidic Soils

Popis výsledku anglicky

Soils in the vicinity of nonferrous metal smelters are often highly polluted by inorganic contaminants released from particulate emissions. We used a technique with double polyamide experimental bags (1-mu m mesh) to study the in situ transformation of fly ash (FA) from a secondary Pb smelter in acidic soil profiles. Between 62 and 66% of the FA dissolved after one year's exposure in the soils, leading to complete dissolution of primary caracolite (Na3Pb2(SO4)(3)Cl) and KPb2Cl5, with formation of secondary anglesite (PbSO4), minor PbSO3, and trace carbonates. Release of Pb was pH-dependent, whereas not for Cd and Zn. Significant amounts of metals (mainly Cd and Zn) partitioned into labile soil fractions. The field data agreed with laboratory pH-staticleaching tests performed on FA, which was washed before the experiment to remove soluble salts. This indicates that appropriate laboratory leaching can accurately predict FA behavior in real-life scenarios (e.g., exposure in soil).

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/GAP210%2F12%2F1413" target="_blank" >GAP210/12/1413: Vliv těžby a úpravy rud na životní prostředí v Namibii: Modelování migrace polutantů v půdách, rostlinách a podzemních vodách</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>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Environmental Science and Technology

ISSN

0013-936X

e-ISSN

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Svazek periodika

46

Číslo periodika v rámci svazku

19

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

10539-10548

Kód UT WoS článku

000309431200023

EID výsledku v databázi Scopus

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