Biofuel Production by Pyrolysis of Cassava Peel in a Fixed Bed Reactor

Okekunle, Pious O.; Itabiyi, Olukunle E.; Adetola, S. O.; Alayande, Ibraheem O.; Ogundiran, Hoassan O.; Odeh, Kehinde G.

doi:10.1615/interjenercleanenv.2017018176

Cited by 15 publications

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“…Figure 1 shows the exploded view of the pyrolysis unit used for the experiments. The detailed description of this set up has been given elsewhere (Okekunle et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

Effect of Potassium Carbonate Catalyst on Pyrolysis of Milicia excelsa in a Fixed Bed Reactor

2020

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The effect of potassium carbonate catalyst on the products distribution from pyrolysis of Milicia excelsa (Iroko) at various temperatures (400, 500 and 600 oC) was investigated. Milicia excelsa sawdust was obtained from a sawmill in Ogbomoso, South-Western Nigeria and was sundried for five days in order to reduce its moisture content. Catalytic pyrolysis of the sawdust was performed with different amounts of catalyst (10, 20, 30 and 40 wt.%). Non-catalytic pyrolysis was also performed for the same temperatures and the products distributions from both batches were compared. Char yield generally increased with increase in catalyst amount for all the temperatures considered. Tar yield did not follow any definite pattern with increasing amount of catalyst as different trends were obtained for different temperatures. Gas yield generally decreased with increase in catalyst amount in the feed. Char yields from non-catalytic experiments were higher than those obtained from catalytic runs, with the highest value of 68% at 400 oC. Tar yields from catalytic pyrolysis were higher than those from non-catalytic process at 400 oC (biomass/catalyst ratio of 90/10) and at 500 oC (biomass/catalyst ratios of 70/70 and 60/40), the highest yield being 29.47% at 500 oC and biomass/catalyst ratio of 60/40. Gas yields from catalytic pyrolysis were higher than those from non-catalytic runs except at 500 oC (biomass/catalyst ratio of 60/40), the highest being 51.3% at 600 oC (biomass/catalyst ratio of 90/10). By making use of appropriate biomass/catalyst ratio and temperature, the yield of liquid fuel from catalytic pyrolysis of Milicia excelsa can be increased.Keywords— Catalyst, potassium carbonate, pyrolysis, biomass, product distribution

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“…Figure 1 shows the exploded view of the pyrolysis unit used for the experiments. The detailed description of this set up has been given elsewhere (Okekunle et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

Effect of Potassium Carbonate Catalyst on Pyrolysis of Milicia excelsa in a Fixed Bed Reactor

2020

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“…Figure 1 shows the exploded view of the pyrolysis unit used for the experiments. The detailed description of this setup has been given elsewhere (Okekunle et al, 2016). Samples with different biomass/catalyst weight ratio (b/c ratio) of 90/10, 80/20, 70/30 and 60/40, thoroughly mixed together, were fed into the crucible, one at a time, and the crucible was covered and fastened with bolts and nuts in preparation for a run.…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

ANALYSIS AND COMPARISON OF THE FUEL PROPERTIES OF BIO-OILS PRODUCED BY CATALYTIC FAST PYROLYSIS OF Tectona grandis

Okekunle

Ogunsola

Babayemi

et al. 2021

Uludağ University Journal of the Faculty of Engineering

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This study analyzed the fuel properties of bio-oils produced by catalytic fast pyrolysis of Tectona grandis in a fixed bed reactor at different temperatures (400 -600 o C) and biomass to catalyst (b/c) weight ratios (90/10 -60/40). Magnesium oxide (MgO) was used as catalyst. The product yields were determined. Bio-oils were characterized with their elemental composition and their Higher Heating Values (HHVs) as well as their basic fuel properties at maximum bio-oil yields conditions, including viscosity, flash point, moisture content, pH value and Conradson Carbon Residue (CCR), were determined and compared with those of non-catalytic pyrolysis bio-oils. The maximum yields of bio-oil at 400, 500 and 600 o C were 31.53, 40.87 and 29.30 wt.%, respectively, obtained at b/c ratios of 70/30, 80/20 and 70/30. Catalytic pyrolysis bio-oils possessed higher carbon and hydrogen but lower oxygen and sulphur contents than non-catalytic pyrolysis bio-oils. The HHVs of catalytic pyrolysis bio-oils (40.31 -42.08 MJ/kg) were higher than those of non-catalytic bio-oils (36.47 -36.76 MJ/kg). Catalyst reduced the viscosity (at 400 and 500 o C), moisture content and CCR (at 400 and 600 o C), and increased the pH value of bio-oils (at 400 and 600 o C). Catalytic pyrolysis deoxygenates and enhances the fuel properties of bio-oils.

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