Browsing by Author "Muhibbudin Eniola Ismail"

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    Evaluation of interactions between Benzene and Toluene Species in the Air Basin of a Nigerian Petroleum Products Depot
    (Department of Civil Engineering, University of Ilorin, 2020-12-03) Muhibbudin Eniola Ismail
    Benzene and Toluene species concentrations relationship and interaction were determined in the air basin of Pipelines and Products Marketing Company Mosimi Depot, Sagamu, Nigeria .This study evaluates the status level of these air pollutants emitted from Mosimi Petroleum depot industrial area using active sampling and gas chromatography fitted with flame ionization detector ; Model : HP 6890. Air samples were collected over granular activated charcoal with 10-18 mesh using a low volume air sampler. The Model: Negretti 1000 tm sampler was placed at human breathing height of 1.5m for a sampling period of eight hours at different sampling location. Desorption process was carried out on the used activated charcoal using solvent extraction method with carbondisulphide as the solvent. The extracted solutions were subjected to gas chromatography fitted with flame ionization analysis. The gas chromatography was powered with chem-station REV A09.01 [1206] software to determine the concentration of each of the benzene and toluene species present. The concentrations of benzene ranged between 0.0104 and 0.0711 mg/m3 while that of toluene ranged between 0.0019 and 0.0998 mg/m3 within Pipelines and Products Marketing Company in Mosimi depot and host environment. The Pearson‟s correlation of benzene and toluene is 0.998 while concentrations ratios ranged between 1.32 and 1.77 which indicate both species are have a relationship and are of multiple similar sources
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    Ozone Formation Potential and Toxicity Potential of VOCs emissions from a Nigerian petroleum products depot
    (Islamic Azad University, 2020-09-21) Muhibbudin Eniola Ismail
    Emissions of volatile organic compounds (VOCs) are major causes of tropospheric ozone and aerosol pollutions. This research provided information on ozone formation potential (OFP) and toxicity potential (TP) resulting from VOCs emission from a Nigeria petroleum depot. In this work, speciated VOCs were provided on basis of updated emissions within and around the depot. The observed concentration of individual VOCs and maximum incremental reactivity (MIR) coefficient were applied to assess the OFP of individual VOC in the ambient atmosphere. Major aromatic VOCs species were considered at various locations. The total OFP in the atmosphere of the depot is 1522.42 μg O3/m3. Toluene specie was revealed to be major contributor to OFP with 71.47% while others species were in descending order of benzene (9.16%), m-xylene (8.41%), ethyl benzene (3.98%), p-xylene (3.51%) and o-xylene (3.46%). The TP levels of aerosols pollutions were also reported with respect to locations. The Slop tank area had the highest OFP and TP level. An assessment of TP level and OFP suggests that occupants of some location within the depot are exposed to unhealthy air conditions. The study established that OFP and TP have a relationship within the atmosphere of the depot with respect to location. It is recommended that aggressive controlled measures of VOCs sources should be adopted within the petroleum depot as a way of curtailing the impact of tropospheric ozone and aerosol pollutions.