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"Chemical leaching of subbituminous coal from the Bogovina - East field (Bogovina basin, Serbia) using hydrochloric acid"

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2021
bitstream_2554.pdf (327.7Kb)
Authors
Pantović Spajić, Katarina
Marković, Branislav
Sokić, Miroslav
Bugarčić, Mladen
Jovanović, Gvozden
Manojlović, Vaso
Stojanović, Ksenija
Contributors
Dolić, Natalija
Zovko Brodarac, Zdenka
Brajčinović, Sandra
Conference object (Published version)
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Abstract
All over the world, huge amounts of coal are available and it is utilized in large quantities for different purposes. The coal combustion causes environmental problems, such as the release of toxic metals and other pollutants into wastewaters, emission of noxious gases, produce of ash dumps, etc. One of the solutions for the reduction of environment pollution, caused by coal combustion, is demineralization and desulphurization of coal. In that sense, treatment of coal by different chemical reagents becomes important. A subbituminous coal, used in this study was taken from the Bogovina - East field (Lower Miocene » 20-16 Ma) of the Bogovina Basin, which is located in Eastern Serbia. The sample was selected based on the previous studies of Bogovina - East field which indicated a high amount of sulphur, relatively high percent of mineral matter and considerably amount of liptinites for humic coal, which represent the most reactive maceral group. The aim of the study was an attem...pt to reduce the amount of ash and sulphur in coal, keeping the organic matter unaltered as possible, using simple and cheap method e.g. treatment with hydrochloric acid (HCl). Ash and total sulphur content was determined before and after HCl leaching. In addition characteristics of initial and treated coal were tracked by X-ray diffraction (XRD) analysis and Fourier-transform infrared (FTIR) spectroscopy. The obtained results showed that the high percentage of deashing (» 80 %) was achieved with cheap hydrochloric acid. XRD analysis of ash before and after sample treatment provides more information about mineral phases in coal and effects of chemical leaching. FTIR analysis indicates almost no changes in structure of coal organic matter after treatment by HCl, which is important for further coal usage (e.g. combustion). On the other hand, the applied chemical leaching with HCl had low impact on the sulphur content in Bogovina coal (desulphurization percentage » 8 %). Therefore, in future research other reagents for efficient desulphurization should be investigated.

Keywords:
coal / acid / demineralization
Source:
19th INTERNATIONAL FOUNDRYMEN CONFERENCE, 2021, 435-440
Publisher:
  • Sisak : Univerzitet u Zagrebu, Metalurški Fakultet
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200023 (Institute of Technology of Nuclear and Other Mineral Row Materials - ITNMS, Belgrade) (RS-200023)
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200168 (University of Belgrade, Faculty of Chemistry) (RS-200168)

ISBN: 978-953-7082-39-0

[ Google Scholar ]
URI
https://ritnms.itnms.ac.rs/handle/123456789/1122
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Institut za tehnologiju nuklearnih i drugih mineralnih sirovina
TY  - CONF
AU  - Pantović Spajić, Katarina
AU  - Marković, Branislav
AU  - Sokić, Miroslav
AU  - Bugarčić, Mladen
AU  - Jovanović, Gvozden
AU  - Manojlović, Vaso
AU  - Stojanović, Ksenija
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1122
AB  - All over the world, huge amounts of coal are available and it is utilized in large quantities for different
purposes. The coal combustion causes environmental problems, such as the release of toxic metals
and other pollutants into wastewaters, emission of noxious gases, produce of ash dumps, etc. One of
the solutions for the reduction of environment pollution, caused by coal combustion, is
demineralization and desulphurization of coal. In that sense, treatment of coal by different chemical
reagents becomes important. A subbituminous coal, used in this study was taken from the Bogovina -
East field (Lower Miocene » 20-16 Ma) of the Bogovina Basin, which is located in Eastern Serbia. The
sample was selected based on the previous studies of Bogovina - East field which indicated a high
amount of sulphur, relatively high percent of mineral matter and considerably amount of liptinites
for humic coal, which represent the most reactive maceral group. The aim of the study was an
attempt to reduce the amount of ash and sulphur in coal, keeping the organic matter unaltered as
possible, using simple and cheap method e.g. treatment with hydrochloric acid (HCl). Ash and total
sulphur content was determined before and after HCl leaching. In addition characteristics of initial
and treated coal were tracked by X-ray diffraction (XRD) analysis and Fourier-transform infrared
(FTIR) spectroscopy. The obtained results showed that the high percentage of deashing (» 80 %) was
achieved with cheap hydrochloric acid. XRD analysis of ash before and after sample treatment
provides more information about mineral phases in coal and effects of chemical leaching. FTIR
analysis indicates almost no changes in structure of coal organic matter after treatment by HCl,
which is important for further coal usage (e.g. combustion). On the other hand, the applied chemical
leaching with HCl had low impact on the sulphur content in Bogovina coal (desulphurization
percentage » 8 %). Therefore, in future research other reagents for efficient desulphurization should
be investigated.
PB  - Sisak : Univerzitet u Zagrebu, Metalurški Fakultet
C3  - 19th INTERNATIONAL FOUNDRYMEN CONFERENCE
T1  - "Chemical leaching of subbituminous coal from the Bogovina - East field (Bogovina basin, Serbia) using hydrochloric acid"
EP  - 440
SP  - 435
ER  - 
@conference{
author = "Pantović Spajić, Katarina and Marković, Branislav and Sokić, Miroslav and Bugarčić, Mladen and Jovanović, Gvozden and Manojlović, Vaso and Stojanović, Ksenija",
year = "2021",
abstract = "All over the world, huge amounts of coal are available and it is utilized in large quantities for different
purposes. The coal combustion causes environmental problems, such as the release of toxic metals
and other pollutants into wastewaters, emission of noxious gases, produce of ash dumps, etc. One of
the solutions for the reduction of environment pollution, caused by coal combustion, is
demineralization and desulphurization of coal. In that sense, treatment of coal by different chemical
reagents becomes important. A subbituminous coal, used in this study was taken from the Bogovina -
East field (Lower Miocene » 20-16 Ma) of the Bogovina Basin, which is located in Eastern Serbia. The
sample was selected based on the previous studies of Bogovina - East field which indicated a high
amount of sulphur, relatively high percent of mineral matter and considerably amount of liptinites
for humic coal, which represent the most reactive maceral group. The aim of the study was an
attempt to reduce the amount of ash and sulphur in coal, keeping the organic matter unaltered as
possible, using simple and cheap method e.g. treatment with hydrochloric acid (HCl). Ash and total
sulphur content was determined before and after HCl leaching. In addition characteristics of initial
and treated coal were tracked by X-ray diffraction (XRD) analysis and Fourier-transform infrared
(FTIR) spectroscopy. The obtained results showed that the high percentage of deashing (» 80 %) was
achieved with cheap hydrochloric acid. XRD analysis of ash before and after sample treatment
provides more information about mineral phases in coal and effects of chemical leaching. FTIR
analysis indicates almost no changes in structure of coal organic matter after treatment by HCl,
which is important for further coal usage (e.g. combustion). On the other hand, the applied chemical
leaching with HCl had low impact on the sulphur content in Bogovina coal (desulphurization
percentage » 8 %). Therefore, in future research other reagents for efficient desulphurization should
be investigated.",
publisher = "Sisak : Univerzitet u Zagrebu, Metalurški Fakultet",
journal = "19th INTERNATIONAL FOUNDRYMEN CONFERENCE",
title = ""Chemical leaching of subbituminous coal from the Bogovina - East field (Bogovina basin, Serbia) using hydrochloric acid"",
pages = "440-435"
}
Pantović Spajić, K., Marković, B., Sokić, M., Bugarčić, M., Jovanović, G., Manojlović, V.,& Stojanović, K.. (2021). "Chemical leaching of subbituminous coal from the Bogovina - East field (Bogovina basin, Serbia) using hydrochloric acid". in 19th INTERNATIONAL FOUNDRYMEN CONFERENCE
Sisak : Univerzitet u Zagrebu, Metalurški Fakultet., 435-440.
Pantović Spajić K, Marković B, Sokić M, Bugarčić M, Jovanović G, Manojlović V, Stojanović K. "Chemical leaching of subbituminous coal from the Bogovina - East field (Bogovina basin, Serbia) using hydrochloric acid". in 19th INTERNATIONAL FOUNDRYMEN CONFERENCE. 2021;:435-440..
Pantović Spajić, Katarina, Marković, Branislav, Sokić, Miroslav, Bugarčić, Mladen, Jovanović, Gvozden, Manojlović, Vaso, Stojanović, Ksenija, ""Chemical leaching of subbituminous coal from the Bogovina - East field (Bogovina basin, Serbia) using hydrochloric acid"" in 19th INTERNATIONAL FOUNDRYMEN CONFERENCE (2021):435-440.

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