Abstract
The generation of waste plastic is one of the major concerns for the scientific community due to its non biodegradable nature. Plastic has been primarily used in different packaging sectors across the globe and polyolefins are primarily used for this purpose to mitigate the demand. However, the lower recycling rate of waste plastics creates several long-term issues in the ecosystem. Therefore, reducing the waste plastic and producing some valuable chemicals is one of the ideal directions to overcome this issue.In this study, we have reported the production of liquid fuels from waste plastics material through thermo-chemical conversion and analyzed for engine performance, combustion, and emission characteristics in compression ignition (CI) engine. The liquid product (or pyro-oil) was characterized by different ASTM standard methods to evaluate the fuel properties. Finally, fuel was used at 10 and 20% blending with commercial diesel to analysis the engine performance, combustion and emission at varying brake mean effective pressure and compression ratio. The results revealed that blending of PO reduces brake specific fuel consumption (BSFC) to achieve the same power. Comparing with commercial diesel, the blended fuels showed better brake power, brake thermal efficiency, mechanical efficiency, cylinder pressure, net heat release rate, and exhaust gas emission. An enhancement in BTE and ME with increasing in BMEP was observed and varies in the range of ∼ 0–34% and ∼ 0–95%, respectively. The blending of PO significantly reduces the emissions of CO, CO2, NOx and un-burnt hydrocarbon as well as improved the O2 emission. Reduced CO emission means a better lifestyle as the health risks factor is also reduced because inhalation of CO can form carboxyhemoglobin (COHb or HbCO) by dissolving in hemoglobin and restrict the oxygen circulation from lungs to the tissues that causes several health issues including death of a person.
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