A review on Botswana coal potential from a pyrolysis and gasification perspective
- Makoba, Mmoloki, Botha, Daniel Erich, Rapoo, Mpho Thabang, Szabo', Las'zlo' Zsolt, Shomana, Thapelo, Agachi, Paul Serban, Muzenda, Edison
- Authors: Makoba, Mmoloki , Botha, Daniel Erich , Rapoo, Mpho Thabang , Szabo', Las'zlo' Zsolt , Shomana, Thapelo , Agachi, Paul Serban , Muzenda, Edison
- Date: 2020
- Subjects: Sub-bituminous coal , Pyrolysis , Gasification
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/463721 , uj:41395 , Citation: Makoba, M., Botha, D. E., Rapoo, M. T., Szabó, L. Z., Shomana, T., Agachi, P. S., Muzenda, E. “A Review on Botswana Coal Potential from a Pyrolysis and Gasification Perspective”, Periodica Polytechnica Chemical Engineering, 65(1), pp. 80-96, 2021. , DOI: https://doi.org/10.3311/PPch.12909
- Description: Abstract: Coal pyrolysis and gasication are promising options for the future of Botswana as the country has large coal reserves with severe limitations in terms of export options. Coal characterization facilities will be required in order to harness its full potential and methods such as proximate, ultimate and chemical structure analysis (FTIR, Raman spectroscopy and X-ray diraction techniques) were investigated. The paper presents a brief history of pyrolysis and gasication, typical types of the reactors as well as factors that inuence product selection for Botswana coal. Coal pyrolysis and gasication are complex processes and it is dicult to dene the mechanisms of product formation. However, there are several kinetic models that are relevant to the sub-bituminous coal of Botswana which were proposed by researchers to describe the formation of the compounds and mathematical models that were validated by other researchers on mass and heat transfer as also presented herein.
- Full Text: false
- Authors: Makoba, Mmoloki , Botha, Daniel Erich , Rapoo, Mpho Thabang , Szabo', Las'zlo' Zsolt , Shomana, Thapelo , Agachi, Paul Serban , Muzenda, Edison
- Date: 2020
- Subjects: Sub-bituminous coal , Pyrolysis , Gasification
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/463721 , uj:41395 , Citation: Makoba, M., Botha, D. E., Rapoo, M. T., Szabó, L. Z., Shomana, T., Agachi, P. S., Muzenda, E. “A Review on Botswana Coal Potential from a Pyrolysis and Gasification Perspective”, Periodica Polytechnica Chemical Engineering, 65(1), pp. 80-96, 2021. , DOI: https://doi.org/10.3311/PPch.12909
- Description: Abstract: Coal pyrolysis and gasication are promising options for the future of Botswana as the country has large coal reserves with severe limitations in terms of export options. Coal characterization facilities will be required in order to harness its full potential and methods such as proximate, ultimate and chemical structure analysis (FTIR, Raman spectroscopy and X-ray diraction techniques) were investigated. The paper presents a brief history of pyrolysis and gasication, typical types of the reactors as well as factors that inuence product selection for Botswana coal. Coal pyrolysis and gasication are complex processes and it is dicult to dene the mechanisms of product formation. However, there are several kinetic models that are relevant to the sub-bituminous coal of Botswana which were proposed by researchers to describe the formation of the compounds and mathematical models that were validated by other researchers on mass and heat transfer as also presented herein.
- Full Text: false
A Review on Botswana Coal Potential from a Pyrolysis and Gasification Perspective
- Makoba, Mmoloki, Botha, Daniel Erich, Rapoo, Mpho Thabang, Szabó, László Zsolt, Shomana, Thapelo, Agachi, Paul Șerban, Muzenda, Edison
- Authors: Makoba, Mmoloki , Botha, Daniel Erich , Rapoo, Mpho Thabang , Szabó, László Zsolt , Shomana, Thapelo , Agachi, Paul Șerban , Muzenda, Edison
- Date: 2021
- Subjects: Sub-bituminous coal , Pyrolysis , Gasification
- Language: English
- Type: Journal article
- Identifier: http://hdl.handle.net/10210/494225 , uj:44791 , Citation: Makoba, M., Botha, D.E., Rapoo, M.T., Szabó, L.Z., Shomana, T., Agachi, P.S. and Muzenda, E., 2021. A review on Botswana coal potential from a pyrolysis and gasification perspective. , DOI: https://doi.org/10.3311/PPch.12909
- Description: Abstract: Coal pyrolysis and gasification are promising options for the future of Botswana as the country has large coal reserves with severe limitations in terms of export options. Coal characterization facilities will be required in order to harness its full potential and methods such as proximate, ultimate and chemical structure analysis (FTIR, Raman spectroscopy and X-ray diffraction techniques) were investigated. The paper presents a brief history of pyrolysis and gasification, typical types of the reactors as well as factors that influence product selection for Botswana coal. Coal pyrolysis and gasification are complex processes and it is difficult to define the mechanisms of product formation. However, there are several kinetic models that are relevant to the sub-bituminous coal of Botswana which were proposed by researchers to describe the formation of the compounds and mathematical models that were validated by other researchers on mass and heat transfer as also presented herein.
- Full Text:
- Authors: Makoba, Mmoloki , Botha, Daniel Erich , Rapoo, Mpho Thabang , Szabó, László Zsolt , Shomana, Thapelo , Agachi, Paul Șerban , Muzenda, Edison
- Date: 2021
- Subjects: Sub-bituminous coal , Pyrolysis , Gasification
- Language: English
- Type: Journal article
- Identifier: http://hdl.handle.net/10210/494225 , uj:44791 , Citation: Makoba, M., Botha, D.E., Rapoo, M.T., Szabó, L.Z., Shomana, T., Agachi, P.S. and Muzenda, E., 2021. A review on Botswana coal potential from a pyrolysis and gasification perspective. , DOI: https://doi.org/10.3311/PPch.12909
- Description: Abstract: Coal pyrolysis and gasification are promising options for the future of Botswana as the country has large coal reserves with severe limitations in terms of export options. Coal characterization facilities will be required in order to harness its full potential and methods such as proximate, ultimate and chemical structure analysis (FTIR, Raman spectroscopy and X-ray diffraction techniques) were investigated. The paper presents a brief history of pyrolysis and gasification, typical types of the reactors as well as factors that influence product selection for Botswana coal. Coal pyrolysis and gasification are complex processes and it is difficult to define the mechanisms of product formation. However, there are several kinetic models that are relevant to the sub-bituminous coal of Botswana which were proposed by researchers to describe the formation of the compounds and mathematical models that were validated by other researchers on mass and heat transfer as also presented herein.
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Characterization of Botswana coal from two coal fields : Mabesekwa and Mmamabula to determine its coal rank
- Makoba, Mmoloki, Moalosi, Taboka, Agachi, Paul S., Muzenda, Edison, Mamvura, Tirivaviri A.
- Authors: Makoba, Mmoloki , Moalosi, Taboka , Agachi, Paul S. , Muzenda, Edison , Mamvura, Tirivaviri A.
- Date: 2020
- Subjects: Botswana coal , Characterization , XRD
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/463728 , uj:41396 , Citation: Makoba, M. et al. 2020. Characterization of Botswana coal from two coal fields : Mabesekwa and Mmamabula to determine its coal rank. , DOI:10.24193/subbchem.2020.2.20
- Description: Abstract: Coal samples from two different coal fields: Mabesekwa and Mmamabula were collected (with six seams from each coal field) to characterize using X-Ray diffractometer (XRD), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FT-IR) spectroscopy. Proximate and ultimate analysis are also given. Clay minerals kaolinite, pyrite, dolomite, siderite and calcite, and quartz were discovered. Comparing measurements of C, VM, GCV, MC and FC obtained from the samples with literature, Botswana coal identifies as lignite grade A coal suitable for applications in coal gasification and ammonia based fertilisers due to its high volatile matter and high reactivity of char. The paper looks to use different methods to analyse Botswana coal and recommend its potential applications based on literature.
- Full Text:
- Authors: Makoba, Mmoloki , Moalosi, Taboka , Agachi, Paul S. , Muzenda, Edison , Mamvura, Tirivaviri A.
- Date: 2020
- Subjects: Botswana coal , Characterization , XRD
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/463728 , uj:41396 , Citation: Makoba, M. et al. 2020. Characterization of Botswana coal from two coal fields : Mabesekwa and Mmamabula to determine its coal rank. , DOI:10.24193/subbchem.2020.2.20
- Description: Abstract: Coal samples from two different coal fields: Mabesekwa and Mmamabula were collected (with six seams from each coal field) to characterize using X-Ray diffractometer (XRD), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FT-IR) spectroscopy. Proximate and ultimate analysis are also given. Clay minerals kaolinite, pyrite, dolomite, siderite and calcite, and quartz were discovered. Comparing measurements of C, VM, GCV, MC and FC obtained from the samples with literature, Botswana coal identifies as lignite grade A coal suitable for applications in coal gasification and ammonia based fertilisers due to its high volatile matter and high reactivity of char. The paper looks to use different methods to analyse Botswana coal and recommend its potential applications based on literature.
- Full Text:
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