Detailed analysis on exploiting the low viscous waste orange peel oil and improving its usability by adding renewable additive: waste to energy initiative

The current work assesses the single-cylinder diesel engine fuelled with orange peel oil. The orange oil was extracted from waste orange peels by steam distillation technique. To enhance the ignition patterns of OPO, an innovative approach has been tried by adding Di-tetra-butyl-peroxide as a cetane improver. Modified fuels are prepared with a diverse volume percentage of DTBP in OPO, and the properties were computed and compared with diesel. 10 and 20% by volume of DTBP is blended with 90 and 80% by volume of OPO and termed as 10DTBP90OPO and 20DTBP80OPO correspondingly. The valuation of modified fuel was performed in a research diesel engine at different loads. Test results specify that the combustion patterns, namely the peak in-cylinder pressure and net heat release rate, are enhanced for OPO by adding DTBP, nevertheless found inferior to diesel. Comparable trends are observed for modified fuels toward performance parameters. 0.8, 0.4, 0.7 g/kWh and 1.1% drop in CO, HC, NOX and smoke correspondingly were observed for 20DTBP80OPO than OPO at full load. Adding 20% volume of DTBP in OPO efficiently improves the engine's emission and performance patterns with enhanced combustion parameters. Hence, the outcome of this work suggests that the fuel generated from orange peel oil shall be declared a feasible diesel substitute.