Browsing by Author "Asere, Abraham"

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    Surface Chemistry Studies of Emission and Thermal Behaviour of Developed Composites for Building Ceiling Materials
    (Research Square, 2021-05) DIRISU, JOSEPH OSEKHOGHENE; Oyedepo, Sunday; Fayomi, Ojo; Salawu, Enesi; Oyekunle, John; Asere, Abraham; Efemwenkiekie, Kelvin
    The emission of harmful elements from burning building ceiling materials and their attendant health effects on inhabitants within the vicinity of the emitted harmful elements is increasingly becoming a source of concern globally. Hence, the need to develop eco-friendly flame-retardant composite materials suitable for house ceiling purposes to forestall unwanted toxic emissions. This work identified the chemical structure of developed composite products and their emission performance during combustion. X-ray Diffraction (XRD) analysis was used for phase quantification and E550 combustion gas analyzer for emission characterization of the developed composites. Thermolyne 950oC oven was employed for the combustion analysis of the prepared composite at 500oC. Quasi negligible SO2 level and CO2 exist; however, A4, 0.3Aldr0.23Cmt0.3Si0.05G0.12CS recorded maximum CO level, an indication of toxic affluence. The low mass losses of all of the composite materials, especially for A2, 0.6Aldr0.34Cmt0.05G0.01OBSretard significantly due to its activities by the retardant constituent. The flame retardant nature of all produced composite was evidenced in their elemental composition, as there was an absence of flammable element and presence of stable insulating compound providing retardance to flame occurrences. These suppressions in the flame inclination of the reinforced materials were noticed within the boundaries of the ceiling crystals from the structural examination. The intermetallic phase from the diffraction intensities showed the presence of a significant second bond interstitial solidphase across the matrix, especially for 0.6Aldr0.34Cmt0.05G0.01OBS ceiling material
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    Thermal Performance of Improved Charcoal Stove as a Clean Development Mechanism Project – A Case Sudy of Bauchi
    (FUOYE Journal of Engineering and Technology, 2017) Adeyemi, Kafayat; Lawal, Nasiru; Asere, Abraham
    Improved cook stoves (ICS) are known to ensure efficiency in the use of traditional fuels, reduce smoke emission and associated health hazards during cooking and reduce cooking time. Another benefit of ICS is in mitigating the effects of climate change. This paper presents the thermal performance and achievable emission reductions by ICS for daily cooking in households around Bauchi. It evaluates an ICS using the International Workshop Agreement (IWA) which rates cook stoves on four indicators (Indoor emission, total emission, efficiency/fuel use and safety) each indicator is rated along five tiers (0: lowest performing to 4: highest performing).The evaluation focused on efficiency/fuel use. The benchmark values for thermal efficiency, fuel use and energy use are 35%, 0.310kg and 7928kJ respectively. This shows that the ICS offers modest improvements in fuel use and it is rated as a tier 3 ICS. A carbon savings of 0.9 x 106tCO2ecan be achieved on an annual basis assuming all rural and urban households in Bauchi employ ICS for their daily cooking.