Pyrolysis of Napier Grass in a Fixed Bed Reactor: Effect of Operating Conditions on Product Yields and Characteristics

This study presents a report on pyrolysis of Napier grass stem in a fixed bed reactor. The effects of nitrogen flow (20 to 60 mL/min), and reaction temperature (450 to 650 °C) were investigated. Increasing the nitrogen flow from 20 to 30 mL/min increased the bio-oil yield and decreased both bio-cha...

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Main Authors: Mohammed, I.Y., Abakr, Y.A., Kazi, F.K., Yusuf, S., Alshareef, I., Chin, S.A.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.30746 /
Published: North Carolina State University 2015
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100011244&doi=10.15376%2fbiores.10.4.6457-6478&partnerID=40&md5=c6d76afc0a6cc4ba6c35fcff3394a47e
http://eprints.utp.edu.my/30746/
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spelling utp-eprints.307462022-03-25T07:16:44Z Pyrolysis of Napier Grass in a Fixed Bed Reactor: Effect of Operating Conditions on Product Yields and Characteristics Mohammed, I.Y. Abakr, Y.A. Kazi, F.K. Yusuf, S. Alshareef, I. Chin, S.A. This study presents a report on pyrolysis of Napier grass stem in a fixed bed reactor. The effects of nitrogen flow (20 to 60 mL/min), and reaction temperature (450 to 650 °C) were investigated. Increasing the nitrogen flow from 20 to 30 mL/min increased the bio-oil yield and decreased both bio-char and non-condensable gas. 30 mL/min nitrogen flow resulted in optimum bio-oil yield and was used in the subsequent experiments. Reaction temperatures between 450 and 600 °C increased the bio-oil yield, with maximum yield of 32.26 wt at 600 oC and a decrease in the corresponding bio-char and non-condensable gas. At 650 °C, reductions in the bio-oil and bio-char yields were recorded while the non-condensable gas increased. Water content of the bio-oil decreased with increasing reaction temperature, while density and viscosity increased. The observed pH and higher heating values were between 2.43 to 2.97, and 25.25 to 28.88 MJ/kg, respectively. GC-MS analysis revealed that the oil was made up of highly oxygenated compounds and requires upgrading. The bio-char and non-condensable gas were characterized, and the effect of reaction temperature on the properties was evaluated. Napier grass represents a good source of renewable energy when all pyrolysis products are efficiently utilized. © 2015. All Rights Reserved. North Carolina State University 2015 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100011244&doi=10.15376%2fbiores.10.4.6457-6478&partnerID=40&md5=c6d76afc0a6cc4ba6c35fcff3394a47e Mohammed, I.Y. and Abakr, Y.A. and Kazi, F.K. and Yusuf, S. and Alshareef, I. and Chin, S.A. (2015) Pyrolysis of Napier Grass in a Fixed Bed Reactor: Effect of Operating Conditions on Product Yields and Characteristics. BioResources, 10 (4). pp. 6457-6478. http://eprints.utp.edu.my/30746/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description This study presents a report on pyrolysis of Napier grass stem in a fixed bed reactor. The effects of nitrogen flow (20 to 60 mL/min), and reaction temperature (450 to 650 °C) were investigated. Increasing the nitrogen flow from 20 to 30 mL/min increased the bio-oil yield and decreased both bio-char and non-condensable gas. 30 mL/min nitrogen flow resulted in optimum bio-oil yield and was used in the subsequent experiments. Reaction temperatures between 450 and 600 °C increased the bio-oil yield, with maximum yield of 32.26 wt at 600 oC and a decrease in the corresponding bio-char and non-condensable gas. At 650 °C, reductions in the bio-oil and bio-char yields were recorded while the non-condensable gas increased. Water content of the bio-oil decreased with increasing reaction temperature, while density and viscosity increased. The observed pH and higher heating values were between 2.43 to 2.97, and 25.25 to 28.88 MJ/kg, respectively. GC-MS analysis revealed that the oil was made up of highly oxygenated compounds and requires upgrading. The bio-char and non-condensable gas were characterized, and the effect of reaction temperature on the properties was evaluated. Napier grass represents a good source of renewable energy when all pyrolysis products are efficiently utilized. © 2015. All Rights Reserved.
format Article
author Mohammed, I.Y.
Abakr, Y.A.
Kazi, F.K.
Yusuf, S.
Alshareef, I.
Chin, S.A.
spellingShingle Mohammed, I.Y.
Abakr, Y.A.
Kazi, F.K.
Yusuf, S.
Alshareef, I.
Chin, S.A.
Pyrolysis of Napier Grass in a Fixed Bed Reactor: Effect of Operating Conditions on Product Yields and Characteristics
author_sort Mohammed, I.Y.
title Pyrolysis of Napier Grass in a Fixed Bed Reactor: Effect of Operating Conditions on Product Yields and Characteristics
title_short Pyrolysis of Napier Grass in a Fixed Bed Reactor: Effect of Operating Conditions on Product Yields and Characteristics
title_full Pyrolysis of Napier Grass in a Fixed Bed Reactor: Effect of Operating Conditions on Product Yields and Characteristics
title_fullStr Pyrolysis of Napier Grass in a Fixed Bed Reactor: Effect of Operating Conditions on Product Yields and Characteristics
title_full_unstemmed Pyrolysis of Napier Grass in a Fixed Bed Reactor: Effect of Operating Conditions on Product Yields and Characteristics
title_sort pyrolysis of napier grass in a fixed bed reactor: effect of operating conditions on product yields and characteristics
publisher North Carolina State University
publishDate 2015
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100011244&doi=10.15376%2fbiores.10.4.6457-6478&partnerID=40&md5=c6d76afc0a6cc4ba6c35fcff3394a47e
http://eprints.utp.edu.my/30746/
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score 11.62408

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