This study evaluated the concentrations of the greenhouse gases CO, CO2, NO2, SO2, CH4 and NH3 at sixteen wood-based burnt brick sites selected from eight purposively sampled Local Government Areas (LGAs) of Benue State. The six greenhouse gases were monitored for two years, from 2012 to 2013, using CROWCON Gasman Digital Gas Meters. Descriptive and inferential statistics were employed in analyzing collected data. Results indicate that the concentrations of each of the greenhouse gases were significantly much higher during the dry season compared to their wet season concentrations (p<.0.5). There were also significant differences in the inter-local government concentrations of the assessed gases within the same period. The use of fuelwood to burn bricks is believed to have principally resulted in the observed significantly higher concentrations of the greenhouse gases during the dry season, from the months of November to March, and corresponds with the season of active wood-based burnt bricks production. The production of perforated bricks can reduce the volume of fuelwood used since the bricks are hollow and can be cured faster, and thus save energy cost as well as reduce greenhouse gas emissions. Greener alternative energy sources (like solar, wind, liquefied hydrogen gas and hydro) should be used in firing bricks as this can reduce greenhouse gas emissions from burning wood at brick sites.
Keywords: Burnt Brick, Energy, Gas Concentrations, Greenhouse, Nigeria
