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

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: O 2 , CO 2 , NO, NO x and SO 2 . 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/NO x emission trends displayed maxima/minima, suggestive of interconvertible chemical reactivity. Declining CO and SO 2 emissions were consistent with rapid chemical conversion. The CO and SO 2 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.

Impact of Biogas and Waste Fats Methyl Esters on NO, NO2, CO, and PM Emission by Dual Fuel Diesel Engine

“…The resulting different quality biodiesel liquid fuels [24][25][26][27][28], as well as biogas [29,30] nevertheless constitute a significant source of energy [31][32][33][34][35], especially for small farms. In such situations, a dual fuel combustion engine powering a generator [36,37] alternative, significantly limiting a farm's demand for energy from external sources and increasing level of independence of the indicated energy sources. Combustion engines are the main power source in transport [5,38].…”

Method of Evaluation of Materials Wear of Cylinder-Piston Group of Diesel Engines in the Biodiesel Fuel Environment

“…Liquid fuels obtained from the indicated sources in the form of biodiesel of various qualities [36][37][38] are an important source of energy that can be used locally by their producers for their own needs [39]. A special case to be considered in the sustainable development policy are entities producing various types of biofuels and using biodiesel to produce electricity in a dual-fuel internal combustion engine driving an electric generator [40,41]. This solution significantly reduces the farm's demand for energy from external sources and increases its independence from the indicated energy sources [42].…”