Effect on Particulate and Gas Emissions by Combusting Biodiesel Blend Fuels Made from Different Plant Oil Feedstocks in a Liquid Fuel Burner

Abstract

This paper focuses on the combustion performance of various blends of biodiesel fuels and diesel fuel from lean to rich mixtures. The biodiesel blend fuel combustion experiments were carried out using a liquid fuel burner and biodiesel fuel made from various plant oil feedstocks, including jatropha, palm and coconut oils. The results show that jatropha oil methyl ester blend 25 (JOME B25) and coconut oil methyl ester blend 25 (COME B25) blended at 25% by volume in diesel fuel produced lower carbon monoxide (CO) and unburned hydrocarbon (UHC) emissions due to more complete combustion. Overall, JOME B25 had the highest CO emission reduction, at about 42.25%, followed by COME B25 at 26.44% emission reduction relative to pure diesel fuel. By contrast, the palm oil methyl ester blend 25 (POME B25) showed a 48.44% increase in these emissions. The results showed that the nitrogen oxides (NO x ) emissions were slightly higher for all biodiesel blend fuels compared with pure diesel fuel combustion. In case of sulphur dioxide (SO 2 ) and UHC emissions, all biodiesel blends fuels have significantly reduced emissions. In the case of SO 2 emission, the POME B25, JOME B25 and COME B25 emissions were reduced 14.62%, 14.45% and 21.39%, respectively, relative to SO 2 emission from combusting pure diesel fuel. UHC emissions of POME B25, JOME B25 and COME B25 showed 51%, 71% and 70% reductions, respectively, compared to diesel fuel. The conclusion from the results is that all the biodiesel blend fuels are suitable and can be recommended for use in liquid fuel burners in order to get better and 'greener' environmental outcomes.

Application of Canola Oil Biodiesel/Diesel Blends in a Common Rail Diesel Engine

“…This can be explained in that the temperature increased as BMEP increased from 0.26 MPa to 0.52 MPa. In addition, changing from ULSD to PCO fuel, the NOx emission also increased because biodiesel is an oxygenated fuel with more intense combustion and increased temperature in the combustion chamber [41,46]. So, the NOx emission can be reduced by decreasing the temperature of the combustion chamber.…”

The Impact of Biodiesel Fuel on Ethanol/Diesel Blends

“…Due to the need for reducing GGE, which contribute to global warming, and the depletion of fossil fuels, governments and industries are aiming to shift from the dependency on fossil fuels to renewable energy sources (e.g., biofuels) [2,3]. The mixture of biofuels (e.g., biodiesel and ethanol) with fossil fuels in standard propulsion systems can reduce GGE and lead to complete combustion [4][5][6]. According to the UK Department for Transport, the British Government has increased the percentage of bio/fossil fuel blends from 4.75% (currently) to 9.75% in 2020 [7].…”

The impacts of a biofuel use on the gas turbine operating performance

“…The SO2 emission level depended on the Sulphur content in the sample [20]. Based on the laboratory analysis result which measured according to ASTM D 2622-03, it was indicated that Sulphur content (% wt) in HSD and PPO were 0.22% and 0.03%, respectively.…”

“…Therefore, the combustion result of PPO had a longer residence time which caused an increase in thermal NOx emission level [18], [19]. (ii) At pre-mixed burn fraction, PPO contains high oxygen which was resulted in a rise of Nox [20]. (iii) PPO had a higher adiabatic ignition flame than HSD.…”