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

2016
Authors
Tasić, Aleksandra M.
Sredović-Ignjatović, Ivana

Ignjatović, Ljubiša M.

Duranović, Danijel
Antić, Mališa
Article (Published version)
Metadata
Show full item recordAbstract
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 chromatographySource:
JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 2016, 81, 12, 1441-1453Publisher:
- 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
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Institution/Community
Poljoprivredni fakultetTY - 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 . .