MITIGATION OF NOX AND CO EMISSIONS FROM LIQUID FUEL BURNER FIRING JATROPHA BIODIESEL BLENDS

This paper highlights the comparison of emission characteristics of Nitrogen Oxides (NOX) and Carbon Monoxide (CO) as well as the combustor wall temperature profile when firing various Jatropha Methyl Ester (JME) biodiesel blends, B5 (5% JME, 95% CDF), B15 (15% JME, 85% CDF) and B25 (25% JME, 75% CDF) with Conventional Diesel Fuel (CDF). The properties of the fuels tested were determined and compared with CDF. All tests were carried out at three different combustion conditions: lean, stoichiometry and rich; with equivalence ratio between 0.8 and 1.2. The formation of NOX and CO emissions from JME biodiesel fuels were reduced and generating lower wall temperature profiles than CDF across all equivalence ratios. The increase in JME content from B5 to B25 significantly improved the reduction of both emissions gases and the wall temperature profiles. The findings suggested that JME biodiesel has the potential to reduce the dependency on CDF, since the properties are similar to CDF fuel and hence, resulting in lower NOX and CO emissions without significantly compromising the heat generated from combustion. This would be beneficial for industries to utilize a cleaner, safer and sustainable biodiesel fuel for their energy generation.