Impact of multi-walled carbon nanotubes with waste fishing net oil on performance, emission and combustion characteristics of a diesel engine.

In this research work, the effect of multi-walled carbon nanotubes (MWCNT) as additive with waste fishing net oil on performance, emission and combustion characteristics of a diesel engine were examined. Waste fishing net oil (WFNO) was obtained by pyrolysis process. The properties of WFNO revealed that oil produced from the waste fishing net can be used in a diesel engine without any engine modifications. The nano additive was characterized by Field Emission Scanning Electron Microscopy (FE-SEM) and also by Transmission Electron Microscopy (TEM). At a constant speed of 1500 rpm, engine performance, emission and combustion characteristics were analysed and compared with conventional diesel fuel. Engine test showed that fuel produced from the waste fishing net was able to work efficiently in a diesel engine without any engine alterations. Experimental results revealed that there was a significant improvement in combustion characteristic with the incorporation of MWCNT with WFNO. At 100% load, brake thermal efficiency was increased by 3.83% and brake specific fuel consumption was decreased by 3.87% with the addition of MWCNT to WFNO. Further, the results showed a significant reduction in engine exhaust emissions like CO, UHC, NO and smoke by 25%, 9.09% 5.25% and 14.81% respectively and a slight increase in CO2 emission by 17.39%.