Detail publikace

A Study of Physicochemical Properties of Stockpile and Ponded Coal Ash

ŠULC, R. ŠÍDLOVÁ, M. FORMÁČEK, P. SNOP, R. ŠKVÁRA, F. POLONSKÁ, A.

Originální název

A Study of Physicochemical Properties of Stockpile and Ponded Coal Ash

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

stockpile ashponded ashrecoveryCCPsphysicochemical propertiescoal combustion

Autoři

ŠULC, R.; ŠÍDLOVÁ, M.; FORMÁČEK, P.; SNOP, R.; ŠKVÁRA, F.; POLONSKÁ, A.

Vydáno

9. 6. 2023

Nakladatel

MDPI

Místo

Switzerland

ISSN

1996-1944

Periodikum

Materials

Ročník

15

Číslo

10

Stát

Švýcarská konfederace

Strany počet

15

URL

https://www.mdpi.com/1996-1944/15/10/3653

Plný text v Digitální knihovně

http://hdl.handle.net/11012/244979

BibTex

@article{BUT183221,
  author="Rostislav {Šulc} and Martina {Šídlová} and Petr {Formáček} and Roman {Snop} and František {Škvára} and Adéla {Polonská}",
  title="A Study of Physicochemical Properties of Stockpile and Ponded Coal Ash",
  journal="Materials",
  year="2023",
  volume="15",
  number="10",
  pages="15",
  doi="10.3390/ma15103653",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/15/10/3653"
}