Characterization and Modelling Of Air Pollutants Transport from Panteka Market, Jimeta-Yola, Nigeria (Published)
The primary motivation of the current research was to apply Land GEM model to predict gaseous pollutant mobility by means of pollutant concentrations, annual waste mass received, and dumpsite open year from the research area. Land GEM model is believed to have wide application on emission rates from landfills/dumpsites using both site specific and default model parameters. Emission concentration levels were achieved through field and laboratory experimental work from vegetable waste dumpsites using scientific calibrated instruments. Data obtained were applied on Land GEM computer based software; version 3.02 in order to predict air-pollutant transport from the market environment and her surroundings. The model was tested to ascertain its validity where the measured and simulated values indicated good match with an error of 3.8% .The closure year of the case study dumpsite A was predicted to be in 2074 having reached hazardous level in 2024 while control dumpsite B predicted a closure year of 2023 and hazardous level in 2019 with modeling efficiency of 64%. Understanding the types of gases emitted from decomposing vegetable waste dumpsites (CH4, CO2, NMOC, H2S) and their transport pattern could go a long way to ensuring control measures of these pollutions there by having a sustainable zero wastes market to boost economic activities under pleasant environment; hence healthy environment is a prerequisite of healthy life, and fighting pollution is definitely the best way of healthy life.
Keywords: Air pollutants, Dumpsites, Land GEM, Model, Transport
MODELLING AND SIMULATION OF SOIL AND SEDIMENT EXPORTED THROUGH STREAM FLOW, CHANGES IN THE RIVER FLOW AND IN EXPORTED PHYSICOCHEMICAL PARAMETERS: LONG TERM ENVIRONMENTAL IMPLICATIONS AND MITIGATIONS STRATEGIES: CASE OF THE RIVER MEWOU (SOUTH MIFI) IN THE WESTERN TROPICAL HIGHLANDS OF CAMEROON (Published)
This study aims at determining the impact on water, agriculture and the environment of the soil constituents exported by the Mewou river on the southern Mifi through modeling of the changes in the river flow and in the exported physico-chemical constituents and to identify mitigate strategies. The average exported soils varied in t/km2 from 195.34 in 2011 to 256.02 in 2012. The flow variation of water and chemical constituents were each characterized by a general equation with a model:
Y = a*t9+b*t8+c*t7+d*t6+e*t5+f*t4+g*t3+h*t2+i*t+j
Environmental pollution was identified by water turbidity, 146.9 NTU, and in mg/l Organic matter 2.33, Cd2+ 11, Pb2+ 48.20, NH4+ 2.8, PT 0.84, Al3+ 0.593, NO2- 4.645. It is recommended that to mitigate soil loss, pollution and increase recharge of water table, the use of Vetiver (Chrysopogon zizanioides) hedges and by installation of wastewater treatment plants by each industry and the Municipal council for the household wastes.
Keywords: Chrysopogon zizanioides, Model, Pollution, physico - chemical, soil loss