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

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.

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Abstract

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.

Item Type: Article
Impact Factor: cited By 43
Uncontrolled Keywords: Nitrogen; Pyrolysis, Fixed bed reactor; Higher heating value; Highly oxygenated compounds; Non-condensable gas; Operating condition; Pyrolysis products; Reaction temperature; Renewable energies, Chemical reactors, Characteristics; Chemical Reactors; Gas; Nitrogen; Oil; Pyrolysis; Temperature; Yield
Depositing User: Ms Sharifah Fahimah Saiyed Yeop
Date Deposited: 25 Mar 2022 07:16
Last Modified: 25 Mar 2022 07:16
URI: http://scholars.utp.edu.my/id/eprint/30746

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