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Combustion kinetics of Shankodi-Jangwa coal

The lack of comprehensive data on the fuel properties of newly discovered coal deposits in Nigeria has hampered the prospective utilisation for power generation. Consequently, this study is aimed at characterising the physicochemical and thermokinetic properties of Shankodi-Jangwa (SKJ) coal recentl...

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Main Authors: Nyakuma, B. B., Jauro, A., Oladokun, O., Abdullah, T. A. T., Uthman, H.
Format: Article
Language:English
Published: Penerbit Universiti Sains Malaysia 2016
Subjects:
QD Chemistry
Online Access:http://eprints.utm.my/id/eprint/71720/1/BemgbaBevanNyakuma2016_CombustionKineticsofShankodiJangwaCoal.pdf
http://eprints.utm.my/id/eprint/71720/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85002796605&doi=10.21315%2fjps2016.27.3.1&partnerID=40&md5=80e614b9f2772b7c527452eacab50dd7
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spelling my.utm.717202017-11-16T05:58:57Z http://eprints.utm.my/id/eprint/71720/ Combustion kinetics of Shankodi-Jangwa coal Nyakuma, B. B. Jauro, A. Oladokun, O. Abdullah, T. A. T. Uthman, H. QD Chemistry The lack of comprehensive data on the fuel properties of newly discovered coal deposits in Nigeria has hampered the prospective utilisation for power generation. Consequently, this study is aimed at characterising the physicochemical and thermokinetic properties of Shankodi-Jangwa (SKJ) coal recently discovered in Nassarawa state, Nigeria. The results indicate that SKJ comprises 40.50% fixed carbon, 43.34% volatile matter, and 2.36% sulphur with a higher heating value (HHV) of 27.37 MJ kg-1. Based on this HHV, SKJ was classified as high-volatile B bituminous coal. Thermal analysis of SKJ under oxidative thermogravimetry (TG) at multiple heating rates revealed that SKJ is highly reactive and thermally degradable below 1000°C. Kinetic analysis using the Flynn-Wall-Ozawa model for conversions α = 0.05-0.90 revealed the activation energy to range from Ea = 113-259 kJ mol-1, with the frequency factor ranging from A = 2.9 × 1013-1.5 × 1023 min-1 and a range in R2 = 0.8536-0.9997; the average values of these ranges are Ea = 184 kJ mol-1, A = 9.2 × 1023 min-1 and R2 = 0.9420, respectively. The study highlighted fuel property data vital for modelling and designing future SKJ coal power generation. Penerbit Universiti Sains Malaysia 2016 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/71720/1/BemgbaBevanNyakuma2016_CombustionKineticsofShankodiJangwaCoal.pdf Nyakuma, B. B. and Jauro, A. and Oladokun, O. and Abdullah, T. A. T. and Uthman, H. (2016) Combustion kinetics of Shankodi-Jangwa coal. Journal of Physical Science, 27 (3). pp. 1-12. ISSN 1675-3402 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85002796605&doi=10.21315%2fjps2016.27.3.1&partnerID=40&md5=80e614b9f2772b7c527452eacab50dd7
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic QD Chemistry
spellingShingle QD Chemistry
Nyakuma, B. B.
Jauro, A.
Oladokun, O.
Abdullah, T. A. T.
Uthman, H.
Combustion kinetics of Shankodi-Jangwa coal
description The lack of comprehensive data on the fuel properties of newly discovered coal deposits in Nigeria has hampered the prospective utilisation for power generation. Consequently, this study is aimed at characterising the physicochemical and thermokinetic properties of Shankodi-Jangwa (SKJ) coal recently discovered in Nassarawa state, Nigeria. The results indicate that SKJ comprises 40.50% fixed carbon, 43.34% volatile matter, and 2.36% sulphur with a higher heating value (HHV) of 27.37 MJ kg-1. Based on this HHV, SKJ was classified as high-volatile B bituminous coal. Thermal analysis of SKJ under oxidative thermogravimetry (TG) at multiple heating rates revealed that SKJ is highly reactive and thermally degradable below 1000°C. Kinetic analysis using the Flynn-Wall-Ozawa model for conversions α = 0.05-0.90 revealed the activation energy to range from Ea = 113-259 kJ mol-1, with the frequency factor ranging from A = 2.9 × 1013-1.5 × 1023 min-1 and a range in R2 = 0.8536-0.9997; the average values of these ranges are Ea = 184 kJ mol-1, A = 9.2 × 1023 min-1 and R2 = 0.9420, respectively. The study highlighted fuel property data vital for modelling and designing future SKJ coal power generation.
format Article
author Nyakuma, B. B.
Jauro, A.
Oladokun, O.
Abdullah, T. A. T.
Uthman, H.
author_facet Nyakuma, B. B.
Jauro, A.
Oladokun, O.
Abdullah, T. A. T.
Uthman, H.
author_sort Nyakuma, B. B.
title Combustion kinetics of Shankodi-Jangwa coal
title_short Combustion kinetics of Shankodi-Jangwa coal
title_full Combustion kinetics of Shankodi-Jangwa coal
title_fullStr Combustion kinetics of Shankodi-Jangwa coal
title_full_unstemmed Combustion kinetics of Shankodi-Jangwa coal
title_sort combustion kinetics of shankodi-jangwa coal
publisher Penerbit Universiti Sains Malaysia
publishDate 2016
url http://eprints.utm.my/id/eprint/71720/1/BemgbaBevanNyakuma2016_CombustionKineticsofShankodiJangwaCoal.pdf
http://eprints.utm.my/id/eprint/71720/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85002796605&doi=10.21315%2fjps2016.27.3.1&partnerID=40&md5=80e614b9f2772b7c527452eacab50dd7
_version_ 1643656262309642240
score 13.211869

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