Sustainability 2013, 5(5), 2098-2107; doi:10.3390/su5052098
Article

Real-Time Study of Noxious Gas Emissions and Combustion Efficiency of Blended Mixtures of Neem Biodiesel and Petrodiesel

Received: 22 March 2013; in revised form: 29 April 2013 / Accepted: 29 April 2013 / Published: 8 May 2013
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Neem biodiesel is currently being explored as a future biofuel and was extracted chemically from the vegetable oil. Many of its properties are still under investigation and our aim was to study its noxious-gas emission profiles from blends with regular petroleum diesel. The distinct advantage of a real-time study is acquisition of in situ data on the combustion behavior of gas components with actual progression of time. Mixtures of neem biodiesel and petroleum diesel corresponding to neem additives of 5%, 10%, 15% and 25% were tested for combustion efficiency and emitted gases using a high-performance gas analyzer. Our study, therefore, investigated the overall efficiency of the combustion process linked to emissions of the following gases: O2, CO2, NO, NOx and SO2. The results for the 95/5% blend compared to the neat sample were most promising and showed no serious change in performance efficiency (<2%). NO/NOx emission trends displayed maxima/minima, suggestive of interconvertible chemical reactivity. Declining CO and SO2 emissions were consistent with rapid chemical conversion. The CO and SO2 concentrations fell well below the toxic atmospheric limits in less than 300 s. The results are generally encouraging for blends below 10%. The potential environmental impact of the study is discussed.
Keywords: neem biodiesel; gas emissions: O2, CO2, NO, NOx, SO2; combustion efficiency
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MDPI and ACS Style

Pillay, A.; Molki, A.; Elkadi, M.; Manuel, J.; Bojanampati, S.; Khan, M.; Stephen, S. Real-Time Study of Noxious Gas Emissions and Combustion Efficiency of Blended Mixtures of Neem Biodiesel and Petrodiesel. Sustainability 2013, 5, 2098-2107.

AMA Style

Pillay A, Molki A, Elkadi M, Manuel J, Bojanampati S, Khan M, Stephen S. Real-Time Study of Noxious Gas Emissions and Combustion Efficiency of Blended Mixtures of Neem Biodiesel and Petrodiesel. Sustainability. 2013; 5(5):2098-2107.

Chicago/Turabian Style

Pillay, Avin; Molki, Arman; Elkadi, Mirella; Manuel, Johnson; Bojanampati, Shrinivas; Khan, Mohammed; Stephen, Sasi. 2013. "Real-Time Study of Noxious Gas Emissions and Combustion Efficiency of Blended Mixtures of Neem Biodiesel and Petrodiesel." Sustainability 5, no. 5: 2098-2107.

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