A Study of Physicochemical Properties of Stockpile and Ponded Coal Ash
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43925779" target="_blank" >RIV/60461373:22310/22:43925779 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68407700:21110/22:00364106 RIV/00216305:26310/23:PU147946
Výsledek na webu
<a href="https://www.mdpi.com/1996-1944/15/10/3653" target="_blank" >https://www.mdpi.com/1996-1944/15/10/3653</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma15103653" target="_blank" >10.3390/ma15103653</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
A Study of Physicochemical Properties of Stockpile and Ponded Coal Ash
Popis výsledku v původním jazyce
The article describes chemical and also selected physical properties of ponded high temperature fly ash (FA) and bottom ash (BA) from a Melnik lignite power plant located in the Czech Republic. The research was carried out on samples obtained from drills with a depth of up to 54 m and the age of the samples retrieved from the lowest layers of the stockpile dating back to 1960. At the same time, a comparison was made with fresh fly ash and fresh bottom ash obtained from the identical power plant. The study analyzed a total of 98 stockpile samples. The properties selected were studied across the entire stockpile, namely moisture content, specific density, specific surface, carbon content, elemental and phase composition, pH, electrical conductivity and leachability. SEM analyses were also performed. The performed measurements of chemical properties proved the chemical stability of the material even after several decades of storage in the stockpile. The largest changes are evident in the results of the analyses related to the leachability of SO3, Cl- and F-. In contrast, the pH does not change significantly, and the composition is pH neutral or alkaline. Regarding ponded BA, particle disintegration was noted depending on the increasing core borehole depth.
Název v anglickém jazyce
A Study of Physicochemical Properties of Stockpile and Ponded Coal Ash
Popis výsledku anglicky
The article describes chemical and also selected physical properties of ponded high temperature fly ash (FA) and bottom ash (BA) from a Melnik lignite power plant located in the Czech Republic. The research was carried out on samples obtained from drills with a depth of up to 54 m and the age of the samples retrieved from the lowest layers of the stockpile dating back to 1960. At the same time, a comparison was made with fresh fly ash and fresh bottom ash obtained from the identical power plant. The study analyzed a total of 98 stockpile samples. The properties selected were studied across the entire stockpile, namely moisture content, specific density, specific surface, carbon content, elemental and phase composition, pH, electrical conductivity and leachability. SEM analyses were also performed. The performed measurements of chemical properties proved the chemical stability of the material even after several decades of storage in the stockpile. The largest changes are evident in the results of the analyses related to the leachability of SO3, Cl- and F-. In contrast, the pH does not change significantly, and the composition is pH neutral or alkaline. Regarding ponded BA, particle disintegration was noted depending on the increasing core borehole depth.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20101 - Civil engineering
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2022
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Materials
ISSN
1996-1944
e-ISSN
—
Svazek periodika
15
Číslo periodika v rámci svazku
10
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
15
Strana od-do
nestrankovano
Kód UT WoS článku
000803213500001
EID výsledku v databázi Scopus
—