September 1, 2021 Thesis Open Access

NAKACHEW GENET

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    <subfield code="a">EXPERIMENTAL INVESTIGATION OF DIESEL ENGINE PERFORMANCE AND EMISSION CHARACTERISTICS OPERATED WITH PRODUCED BIODIESEL BLENDED FUELS</subfield>
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    <subfield code="a">&lt;p&gt;The globe is currently suffering a dual crisis of petroleum depletion and environmental degradation. Due to exponential population growth, excessive usage of fossil fuels, and limited reservoirs of these fuels. Another serious problem associated with the use of petroleum-based fuel is the increase in pollutant emissions. Biodiesels produced from various feedstocks have been considered as alternative fuels to use in diesel engines with minor modifications. In the present study, low-priced, locally available, and inedible feedstock-based fuels of waste cooking oil were chosen due to their negligible pricing compared to other biodiesel feedstock&amp;rsquo;s, and for reducing waste-oil disposal. This research focuses on producing biodiesel from waste cooking oil by the transesterification method using NaOH as the catalyst in the Chemical Engineering Department laboratory, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia. The biodiesel was subsequently blended with diesel fuel in different blend ratios (B5-5% by volume biodiesel, B10, B15, B20, B25, B30, B35, and B40) and later the various blend fuel properties were tested in an Ethiopian petroleum supply enterprise laboratory to compared with biodiesel and biodiesel blend international standards. This study aim to evaluate and compare the influence of waste cooking oil biodiesel blends with that baseline data of commercial diesel fuel in a single-cylinder direct injection diesel engine under varying engine loading operating conditions at a constant speed of 1500rpm. The fuel characteristics results show that the new biodiesel meets international biodiesel standard characteristics and the various blend ratios tested in a diesel engine are also close to commercial diesel fuel and can be used as fuel for diesel engines.&lt;/p&gt;</subfield>
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