joseph fuwape - Academia.edu (original) (raw)
Papers by joseph fuwape
BioResources
The influence of torrefaction temperature on the durability, combustion characteristics, and emis... more The influence of torrefaction temperature on the durability, combustion characteristics, and emissions of CO, CO2, NOX, and particulate matter (PM) from biomass pellets was studied. The pellets were torrefied under inert conditions at 225, 250, and 300 °C for 60 min. Physical properties, such as weight loss, fines percentage, pellet durability index (PDI), and water absorption, were evaluated using ISO standards. The weight loss increased with higher torrefaction temperatures. Torrefied pellets had lower water absorption than untreated pellets. Fines percentage increased with torrefaction temperature while PDI decreased. Torrefied pellets at 300 °C had the lowest PDI (82.7%), while 225 °C had the highest (98.0%). The energy density and heating values increased with torrefaction temperature from 22.0 MJ/kg at 225 °C to 29.9 MJ/kg at 300 °C compared to 18.9 MJ/kg for untorrefied pellets. There were reductions in CO, CO2, and NOX emissions with an increase in torrefaction temperature w...
African Journal of General Agriculture, Jun 22, 2021
Faculty of Agriculture, University of Uyo, Nigeria, 2012
Journal of the Institute of Wood Science, 2005
Abstract The influences of additive concentration and wood species on dimensional stability of ce... more Abstract The influences of additive concentration and wood species on dimensional stability of cement-bonded flakeboards were investigated. Laboratory scale flakeboards 6mm thick was made from Gmelina arborea (G), Leucaena leucocephala (L) and the mixture of the two in equal proportions. Boards were manufactured at the three levels of the raw materials and additive concentration at levels of 1.5% and 3.5% of the cement weight board. The average values obtained for Thickness Swelling (TS) following 24-hour immersion in cold water ranged from 0.90% to 2.75% for Gmelina arborea; 0.12% to 2.24% for Leucaena leucocephala; 0.39% to 1.68% for mixed materials of the wood species. For 48 hours soak, the values obtained ranged from 1.13% to 3.70%, 1.58% to 3.74% and 0.82% to 2.40% respectively. The values for Water Absorption (WA) after 24-hour water immersion ranged from 15.02% to 17.70% for Gmelina arborea; 15.71% to 19.08% for Leucaena leucocephala; 15.36% to 18.65% for mixed materials. The WA values obtained after 48 hours water immersion ranged from 17.82% to 20.01% for G; 18.77% to 20.93% for L; 18.27% to 20.36% for G + L. The dimensional stability of boards was affected by the wood species, wood density and additive concentration. Boards from Gmelina arborea, were more stable dimensionally than that made from Leucaena leucocephala, whereas the boards produced from the mixture performed better than that of Leucaena leucocephala. The TS and WA of boards decreased with increase the additive concentration. The most dimensionally stable boards were produced at the highest level of additive concentration of 3.5%, both at 24 hours and 48 hours water immersion. TS and WA were not significantly affected by species and species/additive concentration interaction, but the effect of additive concentration was significant.
… of the 28th …, 2002
The effects of over exploitation on floristic diversity, yield and the utilization of tropical ra... more The effects of over exploitation on floristic diversity, yield and the utilization of tropical rain forest vegetation for sustainable livelihood were examined, using Omo Forest Reserve located in Area J4, Ogun State, Nigeria, as a case study. Eight sample plots of 25 ...
Bowen Journal of Agriculture, 2009
The high demand for paper production due to its various uses, but the dwindling of forest trees a... more The high demand for paper production due to its various uses, but the dwindling of forest trees as a result of deforestation and forest exploitation necessitate the investigation of Ricinodendron heudelotii, a lesser utilised tree species for its pulp and paper production potential. In addition, any technique for such investigation that would give reliable but fast information is encouraged. Therefore, infrared spectroscopy was employed to study the chemical components of R. heudelotii wood since chemical component. Ratios of syringyl to guaiacyl associated bands along the longitudinal and radial positions of the wood differ significantly. Higher syringyl/guaiacyl ratio of the corewood than middlewood was observed. The practical implication of this finding is that more chemical would be required to pulp R. heudelotii wood obtained from the base (10% of the merchantable height) and outerwood, because of the presence of high lignin content compared to the other longitudinal (middle, 5...
Journal of Tropical Forest Science, 1992
FUWAPE, JA. 1992. Effect of extractives on heating value of Gmelina arborea.The difference in hea... more FUWAPE, JA. 1992. Effect of extractives on heating value of Gmelina arborea.The difference in heating value of extractive-free wood and unextracted wood was used in determining the influence of extractives on the heating value of Gmelina arborea. Heartwood, sapwood, bark, terminal branches and leaves were extracted with ben- zene/ethanol solution, absolute ethanol and water. The heating values of extractive- free samples and the unextracted control were measured. The mean percentage contribution of extractives to heating values was 23.2, 20.1, 31.5, 17.0 and 22.1% for heatwood, sapwood, bark, terminal branch and leaves, respectively. Correlation matrix suggested that other chemical components of wood also influenced the variation in heating value.
Pleurotus Sajor-caju was cultivated on the sawdust of Ceiba pentandra and Gmelina arborea with th... more Pleurotus Sajor-caju was cultivated on the sawdust of Ceiba pentandra and Gmelina arborea with the aim of comparing the nutritional values of the mushrooms cultivated. The sawdust substrates were inoculated with mushroom spawn and the analysis of the nutritional value was carried out using the AOAC 2005 method . The result showed that the pleurotus Sajor-caju grown on the sawdust substrates of Ceiba pentandra has 23.36% protein, 70.42% fat, 3.58% crude fibre, 9.12% nitrogen, 57.02% moisture content, 59.99% organic matter and 29.98% nitrogen. While the mushroom grown on Gmelina arborea has 23.43% protein, 65.06%fat, 2.73% crude fiber, 9.15% nitrogen, 67.76% moisture content, 65.84% organic matter and 24.13% nitrogen. The result indicated that there was no significant difference in the nutritional values of Pleurotus Sajor-caju grown on the sawdust from the selected species. Also, ceiba pentandra supports the growth of pleurotus Sajor-caju more than Gmelina arborea when the total numb...
Environment, Development and Sustainability
Silviculture in the Tropics, 2011
Chapter 24 Secondary Forests and Fuel Wood Utilization in Africa Joseph Adeola Fuwape Abstract Th... more Chapter 24 Secondary Forests and Fuel Wood Utilization in Africa Joseph Adeola Fuwape Abstract The utilization of fuel wood as a ... Biomass Bioenergy 12 (2): 101106 Fuwape JA, Onyekwelu JC, Adekunle VAJ (2001) Biomass equation and estimation for Gmelina arborea ...
International Journal of Scientific Research in Agricultural Sciences
Journal of Forest and Environmental Science, 2016
Journal of Tropical Forest Products, 2000
BioResources
The influence of torrefaction temperature on the durability, combustion characteristics, and emis... more The influence of torrefaction temperature on the durability, combustion characteristics, and emissions of CO, CO2, NOX, and particulate matter (PM) from biomass pellets was studied. The pellets were torrefied under inert conditions at 225, 250, and 300 °C for 60 min. Physical properties, such as weight loss, fines percentage, pellet durability index (PDI), and water absorption, were evaluated using ISO standards. The weight loss increased with higher torrefaction temperatures. Torrefied pellets had lower water absorption than untreated pellets. Fines percentage increased with torrefaction temperature while PDI decreased. Torrefied pellets at 300 °C had the lowest PDI (82.7%), while 225 °C had the highest (98.0%). The energy density and heating values increased with torrefaction temperature from 22.0 MJ/kg at 225 °C to 29.9 MJ/kg at 300 °C compared to 18.9 MJ/kg for untorrefied pellets. There were reductions in CO, CO2, and NOX emissions with an increase in torrefaction temperature w...
African Journal of General Agriculture, Jun 22, 2021
Faculty of Agriculture, University of Uyo, Nigeria, 2012
Journal of the Institute of Wood Science, 2005
Abstract The influences of additive concentration and wood species on dimensional stability of ce... more Abstract The influences of additive concentration and wood species on dimensional stability of cement-bonded flakeboards were investigated. Laboratory scale flakeboards 6mm thick was made from Gmelina arborea (G), Leucaena leucocephala (L) and the mixture of the two in equal proportions. Boards were manufactured at the three levels of the raw materials and additive concentration at levels of 1.5% and 3.5% of the cement weight board. The average values obtained for Thickness Swelling (TS) following 24-hour immersion in cold water ranged from 0.90% to 2.75% for Gmelina arborea; 0.12% to 2.24% for Leucaena leucocephala; 0.39% to 1.68% for mixed materials of the wood species. For 48 hours soak, the values obtained ranged from 1.13% to 3.70%, 1.58% to 3.74% and 0.82% to 2.40% respectively. The values for Water Absorption (WA) after 24-hour water immersion ranged from 15.02% to 17.70% for Gmelina arborea; 15.71% to 19.08% for Leucaena leucocephala; 15.36% to 18.65% for mixed materials. The WA values obtained after 48 hours water immersion ranged from 17.82% to 20.01% for G; 18.77% to 20.93% for L; 18.27% to 20.36% for G + L. The dimensional stability of boards was affected by the wood species, wood density and additive concentration. Boards from Gmelina arborea, were more stable dimensionally than that made from Leucaena leucocephala, whereas the boards produced from the mixture performed better than that of Leucaena leucocephala. The TS and WA of boards decreased with increase the additive concentration. The most dimensionally stable boards were produced at the highest level of additive concentration of 3.5%, both at 24 hours and 48 hours water immersion. TS and WA were not significantly affected by species and species/additive concentration interaction, but the effect of additive concentration was significant.
… of the 28th …, 2002
The effects of over exploitation on floristic diversity, yield and the utilization of tropical ra... more The effects of over exploitation on floristic diversity, yield and the utilization of tropical rain forest vegetation for sustainable livelihood were examined, using Omo Forest Reserve located in Area J4, Ogun State, Nigeria, as a case study. Eight sample plots of 25 ...
Bowen Journal of Agriculture, 2009
The high demand for paper production due to its various uses, but the dwindling of forest trees a... more The high demand for paper production due to its various uses, but the dwindling of forest trees as a result of deforestation and forest exploitation necessitate the investigation of Ricinodendron heudelotii, a lesser utilised tree species for its pulp and paper production potential. In addition, any technique for such investigation that would give reliable but fast information is encouraged. Therefore, infrared spectroscopy was employed to study the chemical components of R. heudelotii wood since chemical component. Ratios of syringyl to guaiacyl associated bands along the longitudinal and radial positions of the wood differ significantly. Higher syringyl/guaiacyl ratio of the corewood than middlewood was observed. The practical implication of this finding is that more chemical would be required to pulp R. heudelotii wood obtained from the base (10% of the merchantable height) and outerwood, because of the presence of high lignin content compared to the other longitudinal (middle, 5...
Journal of Tropical Forest Science, 1992
FUWAPE, JA. 1992. Effect of extractives on heating value of Gmelina arborea.The difference in hea... more FUWAPE, JA. 1992. Effect of extractives on heating value of Gmelina arborea.The difference in heating value of extractive-free wood and unextracted wood was used in determining the influence of extractives on the heating value of Gmelina arborea. Heartwood, sapwood, bark, terminal branches and leaves were extracted with ben- zene/ethanol solution, absolute ethanol and water. The heating values of extractive- free samples and the unextracted control were measured. The mean percentage contribution of extractives to heating values was 23.2, 20.1, 31.5, 17.0 and 22.1% for heatwood, sapwood, bark, terminal branch and leaves, respectively. Correlation matrix suggested that other chemical components of wood also influenced the variation in heating value.
Pleurotus Sajor-caju was cultivated on the sawdust of Ceiba pentandra and Gmelina arborea with th... more Pleurotus Sajor-caju was cultivated on the sawdust of Ceiba pentandra and Gmelina arborea with the aim of comparing the nutritional values of the mushrooms cultivated. The sawdust substrates were inoculated with mushroom spawn and the analysis of the nutritional value was carried out using the AOAC 2005 method . The result showed that the pleurotus Sajor-caju grown on the sawdust substrates of Ceiba pentandra has 23.36% protein, 70.42% fat, 3.58% crude fibre, 9.12% nitrogen, 57.02% moisture content, 59.99% organic matter and 29.98% nitrogen. While the mushroom grown on Gmelina arborea has 23.43% protein, 65.06%fat, 2.73% crude fiber, 9.15% nitrogen, 67.76% moisture content, 65.84% organic matter and 24.13% nitrogen. The result indicated that there was no significant difference in the nutritional values of Pleurotus Sajor-caju grown on the sawdust from the selected species. Also, ceiba pentandra supports the growth of pleurotus Sajor-caju more than Gmelina arborea when the total numb...
Environment, Development and Sustainability
Silviculture in the Tropics, 2011
Chapter 24 Secondary Forests and Fuel Wood Utilization in Africa Joseph Adeola Fuwape Abstract Th... more Chapter 24 Secondary Forests and Fuel Wood Utilization in Africa Joseph Adeola Fuwape Abstract The utilization of fuel wood as a ... Biomass Bioenergy 12 (2): 101106 Fuwape JA, Onyekwelu JC, Adekunle VAJ (2001) Biomass equation and estimation for Gmelina arborea ...
International Journal of Scientific Research in Agricultural Sciences
Journal of Forest and Environmental Science, 2016
Journal of Tropical Forest Products, 2000