The application of wood ash as a reagent in acid mine drainage treatment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F14%3A86090089" target="_blank" >RIV/61989100:27350/14:86090089 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.mineng.2013.10.032" target="_blank" >http://dx.doi.org/10.1016/j.mineng.2013.10.032</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mineng.2013.10.032" target="_blank" >10.1016/j.mineng.2013.10.032</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The application of wood ash as a reagent in acid mine drainage treatment

Popis výsledku v původním jazyce

The paper deals with a possible utilization of wood ash as a reagent in treating acid mine drainage (AMD) from opencast mining of brown coal. Wood ash samples were obtained having combusted deciduous and coniferous tree wood in a household furnace. The dominant mineral phases in wood ash are calcite, quartz, lime and periclase. The used AMD is characteristic of high contents of sulphates, iron, manganese, heavy metals and low pH. The AMD treatment process included dosing of wood ash to adjust pH valuesabout 8.3 (a dose of 0.5 g.l-1) or calcium hydroxide (a dose of 0.2 g.l-1) for comparison. The reaction time was 20 minutes. Dosing of wood ash in AMD resulted in an increase of pH in solution from 3.5 to 8.3, which caused the removal of metal ions mainly by precipitation, co-precipitation and adsorption. Comparing the application of Ca(OH)2 in AMD treatment, at an almost identical pH value the concentrations fell in both cases for Fe, Mn, As, Co, Cu, Ni, Zn, Mg, Al and Mo. Applying wood

Název v anglickém jazyce

The application of wood ash as a reagent in acid mine drainage treatment

Popis výsledku anglicky

The paper deals with a possible utilization of wood ash as a reagent in treating acid mine drainage (AMD) from opencast mining of brown coal. Wood ash samples were obtained having combusted deciduous and coniferous tree wood in a household furnace. The dominant mineral phases in wood ash are calcite, quartz, lime and periclase. The used AMD is characteristic of high contents of sulphates, iron, manganese, heavy metals and low pH. The AMD treatment process included dosing of wood ash to adjust pH valuesabout 8.3 (a dose of 0.5 g.l-1) or calcium hydroxide (a dose of 0.2 g.l-1) for comparison. The reaction time was 20 minutes. Dosing of wood ash in AMD resulted in an increase of pH in solution from 3.5 to 8.3, which caused the removal of metal ions mainly by precipitation, co-precipitation and adsorption. Comparing the application of Ca(OH)2 in AMD treatment, at an almost identical pH value the concentrations fell in both cases for Fe, Mn, As, Co, Cu, Ni, Zn, Mg, Al and Mo. Applying wood

Druh

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

CEP obor

DJ - Znečištění a kontrola vody

OECD FORD obor

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Projekt

<a href="/cs/project/QI112A132" target="_blank" >QI112A132: Výzkum opatření k zajištění zásobování pitnou vodou v období klimatických změn</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Minerals Engineering. Volume 56

ISSN

0892-6875

e-ISSN

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Svazek periodika

56

Číslo periodika v rámci svazku

02/2014

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

3

Strana od-do

109-111

Kód UT WoS článku

000331432300012

EID výsledku v databázi Scopus

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