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Biodiesel has been gaining increased attention as a nontoxic, biodegradable and renewable new green alternative diesel fuel. Production of biodiesel can be synthesized by chemical or by lipase methods, while lipase method has more advantages compared to chemical synthetic method. In this article, the microbial strains with activity of lipase were isolated from long time oil-contaminated soil and strain...
In this paper, a novel biodiesel named rapeseed oil monoester of ethylene glycol monomethyl ether has been developed, which has one more ester group than traditional biodiesel. It was synthesized and structurally identified through FT-IR, 1H NMR analyses. Engine test results show that when atested diesel engine is fueled with this biodiesel in place of 0#diesel fuel, engine-out smoke emissions can...
The study mainly deals with the causes of air pollution in Gulbarga related to buses. Particularly it focuses on the suggestion to curb the vehicular pollution by the use of biodiesel. The pollution loads have been calculated and compared by considering usage of the biodiesel in place of conventional diesel fuel in buses. For the purpose of this study, the three depots of the NE-Karnataka Road Transport...
Biodiesel, an alternative fuel for diesel engines, has the potential to reduce dependence on foreign sources of petroleum, reduce harmful particulate matter (soot), carbon monoxide, and unburned hydrocarbon emissions, and net carbon dioxide emissions. Despite these benefits, biodiesel utilization has the combustion-related challenges of increased fuel consumption and increased nitrogen oxides emissions...
This paper analyzed chemical and physical properties of diesel fuel and biodiesel. The influence of B20, B50, B100 and 0# diesel fuel mixture on diesel engine performance has been studied in a HF495Q3 engine. Test results show that the driving force of the engine is weaker with the adding of methanol, miximum power, miximum torque reduced about 9.8%, 5.6%; For better evaluated engine economic, in...
Short-term performance tests using crude palm oil (CPO) as fuel for a diesel engine showed CPO to be a suitable substitute of diesel fuel. However, prolonged use of CPO as fuel caused the engine performance to deteriorate. After 500 hours of cumulative running with CPO, the maximum power was reduced by about 20% and the minimum brake specific fuel consumption (bsfc) increased by about 26%. Examination...
A substantial opportunity exists to reduce carbon dioxide (CO2) emissions as well as dependence on foreign oil by developing strategies to cleanly and efficiently use biodiesel, a renewable, domestically available, alternative diesel fuel. However, biodiesel utilization presents several challenges, including decreased fuel energy density and increased emissions of smog-generating nitrogen oxides (NO...
The aims of this research are to find, in decentralized production, more economical and effective techniques based on sustainable energy to extract and transesterificate oil to fuel (the use of ethanol, catalysts, and so on), to find new more effective filtering techniques to clean oils and fats for diesel fuel that produces less pollutants, verified by engine experiments, to find optimal regulations...
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