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Aqueous extraction of anions from coal and fly ash followed by ion-chromatographic determination

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2016
4043.pdf (528.7Kb)
Authors
Tasić, Aleksandra M.
Sredović-Ignjatović, Ivana
Ignjatović, Ljubiša M.
Duranović, Danijel
Antić, Mališa
Article (Published version)
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Abstract
Three different techniques were applied for the aqueous extraction of anions from coal and fly ash: rotary mixer-and ultrasonic-assisted extraction with different duration time, and microwave-assisted extraction at different temperatures. Validation showed that the ion-chromatographic method was suitable for the analysis of anions in coal and fly ash extracts. The variations in the amounts of anions using different extraction times during rotary-assisted extraction were minimal for all investigated anions. The efficiency of ultrasound-assisted extraction of anions from coal depended on the sonication time and was highest at 30 min. The ultrasound-assisted extraction was less efficient for the extraction of anions from fly ash than rotary-assisted extraction. Increase of temperature in the microwave-assisted extraction had a positive effect on the amounts of all anions extracted from coal and sulphate from fly ash, while the amounts of fluoride and chloride in fly ash extracts decreased.... The microwave-assisted extraction of coal at 150 degrees C was compared with standard ASTM methods, and results were in good agreement only for chloride. Changes in the pH value and conductivity during ultrasound-assisted extraction were measured in order to explain changes on the surface of coal particles in contact with water and different processes that occur under environmental conditions.

Keywords:
coal / fly ash / anions / extraction / ion chromatography
Source:
JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 2016, 81, 12, 1441-1453
Publisher:
  • Srpsko hemijsko društvo, Beograd
Funding / projects:
  • Application of advanced oxidation processes and nanostructured oxide materials for the removal of pollutants from the environment, development and optimisation of instrumental techniques for efficiency monitoring (RS-172030)
  • Geochemical investigations of sedimentary rocks - fossil fuels and environmental pollutants (RS-176006)
  • Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden (RS-43009)

DOI: 10.2298/JSC160223086T

ISSN: 0352-5139

WoS: 000392946100010

Scopus: 2-s2.0-85009935551
[ Google Scholar ]
URI
http://aspace.agrif.bg.ac.rs/handle/123456789/4046
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Poljoprivredni fakultet
TY  - JOUR
AU  - Tasić, Aleksandra M.
AU  - Sredović-Ignjatović, Ivana
AU  - Ignjatović, Ljubiša M.
AU  - Duranović, Danijel
AU  - Antić, Mališa
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4046
AB  - Three different techniques were applied for the aqueous extraction of anions from coal and fly ash: rotary mixer-and ultrasonic-assisted extraction with different duration time, and microwave-assisted extraction at different temperatures. Validation showed that the ion-chromatographic method was suitable for the analysis of anions in coal and fly ash extracts. The variations in the amounts of anions using different extraction times during rotary-assisted extraction were minimal for all investigated anions. The efficiency of ultrasound-assisted extraction of anions from coal depended on the sonication time and was highest at 30 min. The ultrasound-assisted extraction was less efficient for the extraction of anions from fly ash than rotary-assisted extraction. Increase of temperature in the microwave-assisted extraction had a positive effect on the amounts of all anions extracted from coal and sulphate from fly ash, while the amounts of fluoride and chloride in fly ash extracts decreased. The microwave-assisted extraction of coal at 150 degrees C was compared with standard ASTM methods, and results were in good agreement only for chloride. Changes in the pH value and conductivity during ultrasound-assisted extraction were measured in order to explain changes on the surface of coal particles in contact with water and different processes that occur under environmental conditions.
PB  - Srpsko hemijsko društvo, Beograd
T2  - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
T1  - Aqueous extraction of anions from coal and fly ash followed by ion-chromatographic determination
EP  - 1453
IS  - 12
SP  - 1441
VL  - 81
DO  - 10.2298/JSC160223086T
ER  - 
@article{
author = "Tasić, Aleksandra M. and Sredović-Ignjatović, Ivana and Ignjatović, Ljubiša M. and Duranović, Danijel and Antić, Mališa",
year = "2016",
abstract = "Three different techniques were applied for the aqueous extraction of anions from coal and fly ash: rotary mixer-and ultrasonic-assisted extraction with different duration time, and microwave-assisted extraction at different temperatures. Validation showed that the ion-chromatographic method was suitable for the analysis of anions in coal and fly ash extracts. The variations in the amounts of anions using different extraction times during rotary-assisted extraction were minimal for all investigated anions. The efficiency of ultrasound-assisted extraction of anions from coal depended on the sonication time and was highest at 30 min. The ultrasound-assisted extraction was less efficient for the extraction of anions from fly ash than rotary-assisted extraction. Increase of temperature in the microwave-assisted extraction had a positive effect on the amounts of all anions extracted from coal and sulphate from fly ash, while the amounts of fluoride and chloride in fly ash extracts decreased. The microwave-assisted extraction of coal at 150 degrees C was compared with standard ASTM methods, and results were in good agreement only for chloride. Changes in the pH value and conductivity during ultrasound-assisted extraction were measured in order to explain changes on the surface of coal particles in contact with water and different processes that occur under environmental conditions.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY",
title = "Aqueous extraction of anions from coal and fly ash followed by ion-chromatographic determination",
pages = "1453-1441",
number = "12",
volume = "81",
doi = "10.2298/JSC160223086T"
}
Tasić, A. M., Sredović-Ignjatović, I., Ignjatović, L. M., Duranović, D.,& Antić, M.. (2016). Aqueous extraction of anions from coal and fly ash followed by ion-chromatographic determination. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Srpsko hemijsko društvo, Beograd., 81(12), 1441-1453.
https://doi.org/10.2298/JSC160223086T
Tasić AM, Sredović-Ignjatović I, Ignjatović LM, Duranović D, Antić M. Aqueous extraction of anions from coal and fly ash followed by ion-chromatographic determination. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2016;81(12):1441-1453.
doi:10.2298/JSC160223086T .
Tasić, Aleksandra M., Sredović-Ignjatović, Ivana, Ignjatović, Ljubiša M., Duranović, Danijel, Antić, Mališa, "Aqueous extraction of anions from coal and fly ash followed by ion-chromatographic determination" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 81, no. 12 (2016):1441-1453,
https://doi.org/10.2298/JSC160223086T . .

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