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Effect of waste generation and management on outdoor air quality in Uyo metropolis, Akwa Ibom State, Nigeria
Waste generation and management has emerged as one of the greatest challenges facing our environment in recent times. In this study, waste dumping sites in Uyo metropolis, Nigeria were selected to assess waste generation and management and their effects on outdoor air quality. Concentrations of gaseous pollutants such as CO, SO2, NO2, HCN, H2S, Cl, NH3 and suspended particulate matter (SPM), as well as heat, noise and radiation, were measured using in situ portable digital monitors. Concentrations of those pollutants varied with location, partly due to variation in the composition of waste dumped and partly due to predominant activities at each site. Results obtained from the study revealed that the concentration of NO2 was highest at SP5 (0.45 ± 0.07), while the concentration of ammonia was highest at SP3 (13.3 ± 0.71 ppm). Concentrations of SO2 at all the sampled locations varied between 0.15 ± 0.07 ppm and 0.45 ± 0.07 ppm. All the sites under study recorded high levels of CO, with a range of 13.5 ± 0.71 to 27.0 ± 1.41 ppm. Also, 16 of the 19 locations recorded high SO2 concentrations. These concentrations were higher than the 2007 US National Ambient Air Quality Standards (NAAQS) for CO and SO2. The concentrations of HCN, Cl, H2S and SPM were far below their instruments’ alarm level. Heat, radiation and noise values varied from one location to another. The concentrations of these pollutants increased as the quantity, duration and decomposition of waste materials dumped at each dump site also increased.
Effect of waste generation and management on outdoor air quality in Uyo metropolis, Akwa Ibom State, Nigeria
Waste generation and management has emerged as one of the greatest challenges facing our environment in recent times. In this study, waste dumping sites in Uyo metropolis, Nigeria were selected to assess waste generation and management and their effects on outdoor air quality. Concentrations of gaseous pollutants such as CO, SO2, NO2, HCN, H2S, Cl, NH3 and suspended particulate matter (SPM), as well as heat, noise and radiation, were measured using in situ portable digital monitors. Concentrations of those pollutants varied with location, partly due to variation in the composition of waste dumped and partly due to predominant activities at each site. Results obtained from the study revealed that the concentration of NO2 was highest at SP5 (0.45 ± 0.07), while the concentration of ammonia was highest at SP3 (13.3 ± 0.71 ppm). Concentrations of SO2 at all the sampled locations varied between 0.15 ± 0.07 ppm and 0.45 ± 0.07 ppm. All the sites under study recorded high levels of CO, with a range of 13.5 ± 0.71 to 27.0 ± 1.41 ppm. Also, 16 of the 19 locations recorded high SO2 concentrations. These concentrations were higher than the 2007 US National Ambient Air Quality Standards (NAAQS) for CO and SO2. The concentrations of HCN, Cl, H2S and SPM were far below their instruments’ alarm level. Heat, radiation and noise values varied from one location to another. The concentrations of these pollutants increased as the quantity, duration and decomposition of waste materials dumped at each dump site also increased.
Effect of waste generation and management on outdoor air quality in Uyo metropolis, Akwa Ibom State, Nigeria
Udotong, Justina IR (author) / Etim, Josephine A (author)
Geosystem Engineering ; 15 ; 239-246
2012-12-01
8 pages
Article (Journal)
Electronic Resource
English
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