dc.contributor.author |
Menya, E
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|
dc.contributor.author |
Olupot, PW
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|
dc.contributor.author |
Storz, H
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|
dc.contributor.author |
Lubwama, M
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dc.contributor.author |
Kiros, Y
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dc.contributor.author |
John, Maya J
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dc.date.accessioned |
2019-08-14T06:43:02Z |
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dc.date.available |
2019-08-14T06:43:02Z |
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dc.date.issued |
2019-03 |
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dc.identifier.citation |
Menya, E. (et.al.). 2019. Optimization of pyrolysis conditions for char production from rice husks and its characterization as a precursor for production of activated carbon. Biomass Conversion and Biorefinery, pp 1-16. |
en_US |
dc.identifier.issn |
2190-6815 |
|
dc.identifier.issn |
2190-6823 |
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dc.identifier.uri |
https://link.springer.com/article/10.1007/s13399-019-00399-0
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|
dc.identifier.uri |
https://rdcu.be/bOEjr
|
|
dc.identifier.uri |
http://hdl.handle.net/10204/11075
|
|
dc.description |
Copyright: 2019 Springer. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, kindly consult the publisher's website. A free fulltext non-print version of the published item can be viewed at uri:https://rdcu.be/bOEjr. |
en_US |
dc.description.abstract |
Response surface methodology was employed to optimize pyrolysis conditions for production of char with maximum yield, fixed carbon content, and with minimum ash content from Uganda’s New Rice for Africa (NERICA) 1 rice husk variety. The aim was to obtain rice husk char with more suitable properties as an activated carbon precursor. Mathematical models were developed to explain the relationships between the experimental responses and the pyrolysis parameters of temperature (400–600 °C), heating rate (10–25 °C min-1), and heating period (60–120 min). The optimized rice husk char was further characterized for elemental and proximate compositions, thermal behavior, specific surface area, as well as surface functional groups. Results from the analysis of variance (ANOVA) revealed that the quadratic model best fits each of the responses. Pyrolysis temperature had the greatest influence on each of the responses, followed by heating period, and lastly heating rate. Optimum pyrolysis conditions were found to be temperature (406 °C), heating rate (10 °C min-1), and heating period (60 min), resulting in char yield, fixed carbon, and ash contents of 35.26, 55.39, and 35.01% dry basis, respectively. Compared to raw rice husk, the resulting rice husk char was found more suited as activated carbon precursor, due to its enriched carbon content (60.35%) and specific surface area (123.9 m2 g-1). Thermogravimetric analysis of the rice husk char revealed that thermal activation temperatures higher than 400 °C may be required to considerably devolatilize the char, forming a more porous activated carbon. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Springer Verlag |
en_US |
dc.relation.ispartofseries |
Worklist;22419 |
|
dc.subject |
Ash content |
en_US |
dc.subject |
Char yield |
en_US |
dc.subject |
Fixed carbon |
en_US |
dc.subject |
NERICA 1 rice husk |
en_US |
dc.subject |
Optimization |
en_US |
dc.subject |
Pyrolysis |
en_US |
dc.title |
Optimization of pyrolysis conditions for char production from rice husks and its characterization as a precursor for production of activated carbon |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Menya, E., Olupot, P., Storz, H., Lubwama, M., Kiros, Y., & John, M. J. (2019). Optimization of pyrolysis conditions for char production from rice husks and its characterization as a precursor for production of activated carbon. http://hdl.handle.net/10204/11075 |
en_ZA |
dc.identifier.chicagocitation |
Menya, E, PW Olupot, H Storz, M Lubwama, Y Kiros, and Maya J John "Optimization of pyrolysis conditions for char production from rice husks and its characterization as a precursor for production of activated carbon." (2019) http://hdl.handle.net/10204/11075 |
en_ZA |
dc.identifier.vancouvercitation |
Menya E, Olupot P, Storz H, Lubwama M, Kiros Y, John MJ. Optimization of pyrolysis conditions for char production from rice husks and its characterization as a precursor for production of activated carbon. 2019; http://hdl.handle.net/10204/11075. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Menya, E
AU - Olupot, PW
AU - Storz, H
AU - Lubwama, M
AU - Kiros, Y
AU - John, Maya J
AB - Response surface methodology was employed to optimize pyrolysis conditions for production of char with maximum yield, fixed carbon content, and with minimum ash content from Uganda’s New Rice for Africa (NERICA) 1 rice husk variety. The aim was to obtain rice husk char with more suitable properties as an activated carbon precursor. Mathematical models were developed to explain the relationships between the experimental responses and the pyrolysis parameters of temperature (400–600 °C), heating rate (10–25 °C min-1), and heating period (60–120 min). The optimized rice husk char was further characterized for elemental and proximate compositions, thermal behavior, specific surface area, as well as surface functional groups. Results from the analysis of variance (ANOVA) revealed that the quadratic model best fits each of the responses. Pyrolysis temperature had the greatest influence on each of the responses, followed by heating period, and lastly heating rate. Optimum pyrolysis conditions were found to be temperature (406 °C), heating rate (10 °C min-1), and heating period (60 min), resulting in char yield, fixed carbon, and ash contents of 35.26, 55.39, and 35.01% dry basis, respectively. Compared to raw rice husk, the resulting rice husk char was found more suited as activated carbon precursor, due to its enriched carbon content (60.35%) and specific surface area (123.9 m2 g-1). Thermogravimetric analysis of the rice husk char revealed that thermal activation temperatures higher than 400 °C may be required to considerably devolatilize the char, forming a more porous activated carbon.
DA - 2019-03
DB - ResearchSpace
DP - CSIR
KW - Ash content
KW - Char yield
KW - Fixed carbon
KW - NERICA 1 rice husk
KW - Optimization
KW - Pyrolysis
LK - https://researchspace.csir.co.za
PY - 2019
SM - 2190-6815
SM - 2190-6823
T1 - Optimization of pyrolysis conditions for char production from rice husks and its characterization as a precursor for production of activated carbon
TI - Optimization of pyrolysis conditions for char production from rice husks and its characterization as a precursor for production of activated carbon
UR - http://hdl.handle.net/10204/11075
ER -
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en_ZA |