dc.creator | Tasić, Aleksandra M. | |
dc.creator | Sredović-Ignjatović, Ivana | |
dc.creator | Ignjatović, Ljubiša M. | |
dc.creator | Duranović, Danijel | |
dc.creator | Antić, Mališa | |
dc.date.accessioned | 2020-12-17T21:35:35Z | |
dc.date.available | 2020-12-17T21:35:35Z | |
dc.date.issued | 2016 | |
dc.identifier.issn | 0352-5139 | |
dc.identifier.uri | http://aspace.agrif.bg.ac.rs/handle/123456789/4046 | |
dc.description.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. | en |
dc.publisher | Srpsko hemijsko društvo, Beograd | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172030/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/176006/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43009/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | JOURNAL OF THE SERBIAN CHEMICAL SOCIETY | |
dc.subject | coal | en |
dc.subject | fly ash | en |
dc.subject | anions | en |
dc.subject | extraction | en |
dc.subject | ion chromatography | en |
dc.title | Aqueous extraction of anions from coal and fly ash followed by ion-chromatographic determination | en |
dc.type | article | |
dc.rights.license | BY-NC-ND | |
dc.citation.epage | 1453 | |
dc.citation.issue | 12 | |
dc.citation.other | 81(12): 1441-1453 | |
dc.citation.rank | M23 | |
dc.citation.spage | 1441 | |
dc.citation.volume | 81 | |
dc.identifier.doi | 10.2298/JSC160223086T | |
dc.identifier.fulltext | http://aspace.agrif.bg.ac.rs/bitstream/id/2593/4043.pdf | |
dc.identifier.scopus | 2-s2.0-85009935551 | |
dc.identifier.wos | 000392946100010 | |
dc.type.version | publishedVersion | |