Biodiesel production from waste cooking oil via alkali catalyst and its engine test

Meng, Xiuxia; Chen, Guanyi; Wang, Yonghong

doi:10.1016/j.fuproc.2008.02.006

Cited by 367 publications

(180 citation statements)

References 18 publications

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“…For instance, Ulusoy et al [41] observed that the fuel consumption of frying oil biodiesel was 2.43% less than that of diesel on a 4-cylinder, 4-stroke 46kW diesel engine under similar operating conditions. Other than the effects of heating value on BSFC, some researchers have also reported that the BSFC of biodiesel could be affected by the biodiesel content [45][46][47][48] biodiesel physical properties [36], engine type and operating conditions [47] and additives [49], [50]. In addition, some researchers have reported that the BSFC may increase due to changes in combustion timing caused by biodiesel's higher cetane number, as well as the injection timing [33].…”

Section: Brake Specific Fuel Consumptionmentioning

confidence: 99%

Combustion and performance characteristics of CI (compression ignition) engine running with biodiesel

Tesfa

Mishra

Zhang

et al. 2013

Energy

144

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Biodiesel is one of the alternative fuels which is renewable and environmentally friendly and can be used in diesel engines with little or no modifications. In the present study, experimental investigations were carried out on the effects of biodiesel types, biodiesel fraction and physical properties on the combustion and performance characteristics of a compression ignition (CI) engine. The experimental work was conducted on a four-cylinder, four -stroke, direct injection (DI) and turbocharged diesel engine by using biodiesel of waste oil, rapeseed oil and corn oil and normal diesel. Based on the measured parameters, detailed analyses were carried out on cylinder pressure, heat release rate and brake specific fuel consumption (BSFC). It has been seen that the biodiesel types do not result in any significant differences in peak cylinder pressure and BSFC. The results also clearly indicate that the engine running with biodiesel have slightly higher in-cylinder pressure and heat release rate than the engine running with normal diesel. The BSFC for the engine running with neat biodiesel was higher than the engine running with normal diesel by up to 15%. It is also noticed that the physical properties of the biodiesel affects significantly the performance of the engine.

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Section: Brake Specific Fuel Consumptionmentioning

confidence: 99%

Combustion and performance characteristics of CI (compression ignition) engine running with biodiesel

Tesfa

Mishra

Zhang

et al. 2013

Energy

144

View full text Add to dashboard Cite

show abstract

“…This can be explained by the relative composition of the fuels as biodiesel has oxygen present in the structure which is not a component of conventional mineral diesel. As a consequence of the additional oxygen the carbon and hydrogen content is reduced from 86 to 77% for carbon and 14 to 12% for hydrogen [28]- [30]. Although the biodiesel result in lower LHV, the combustion process is improved due to the presence of the higher oxygen content of the fuel.…”

Section: Engine Test Facilities and Proceduresmentioning

confidence: 99%

LHV predication models and LHV effect on the performance of CI engine running with biodiesel blends

Tesfa

Mishra

et al. 2013

Energy Conversion and Management

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The heating value of fuel is one of its most important physical properties, and is used for the design and numerical simulation of combustion processes within internal combustion (IC) engines. Recently, there has been a significant increase in the use of dual fuel and blended fuels in compression ignition (CI) engines. Most of the blended fuels include biodiesel as one of the constituents and hence the objective of this study is to investigate the effect of biodiesel content to lower heating value (LHV) and to develop new LHV prediction models that correlate the LHV with biodiesel fraction, density and viscosity.Furthermore, this study also investigated the effects of the LHV on CI engines performance parameters experimentally. To achieve the above mentioned objectives density, viscosity and LHV of rapeseed oil biodiesel, corn oil biodiesel and waste oil biodiesel at different blend fraction values (B0, B5, B10, B20, B50, B75, and B100, where 'B5' denotes a blend of 5% biodiesel and 95% mineral diesel, etc) were measured as per EN ISO 3675:1998, EN ISO 3104:1996 and DIN 51900 standards. The engine experimental work was conducted on a four-cylinder, four -stroke, direct injection (DI) and turbocharged diesel engine by using rapeseed oil and normal diesel blends. Based on the experimental results, models were developed which have the capability to predict the 2 specific fuel consumption (BSFC) and thermal efficiency were analysed and it has been seen that for the neat biodiesel which its LHV is lower by 8% than diesel resulted in an increment of BSFC and thermal efficiency by 18% and 25% respectively.

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“…Biodiesel property values can be checked by verifying it with the ASTM D6751 standard shown in table 4 [22,23,24,25,26]. Biodiesel produced seems to be matched with that of the ASTM D6751 biodiesel standard.…”

Section: Comparison Of Propertiesmentioning

confidence: 95%

Transesterification of Waste Cooking Oil Catalysed by Crystalline Copper Doped Zinc Oxide Nanocatalyst

Sandhya

Velavan

Ravichandran

2016

JAC

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I S S N 2321-807XV o l u m e 12 N u m b e r 12 J o u r n a l o f A d v a n c e s i n C h e m i s t r y Transesterification of Waste Cooking Oil Catalysed by Crystalline Copper Doped Zinc Oxide Nanocatalyst AbstractBiodiesel has its unique position in the field of renewable energy as alternate fuel to diesel due to fuel price, energy requirement and petroleum crisis. In this study, biodiesel was produced from Waste Cooking Oil (WCO) using Copper doped Zinc Oxide (CZO) nanocatalysts. The synthesized Copper doped Zinc Oxide nanocatalysts were characterized by X-Ray Diffraction (XRD) and High Resolution Transmission Electron Microscope (HRTEM). Design of experiment was framed using Taguchi method to limit the experiments and to find the optimum reaction conditions. The effect of process parameters such as oil-to-methanol ratio (O/M), catalyst type, catalyst concentration, temperature and time on the transesterification reactions using characterized Copper doped Zinc Oxide nanocatalyst were investigated. The 4% (weight /weight) nanocatalyst concentration, 1:5 Oil to methanol molar ratio at 60°C temperature and 40 minutes of reaction time were found to be optimum, in which the maximum biodiesel yield of 98 % (w/w) was obtained. Hence it was determined that nanocatalysts exhibited good catalytic activities on biodiesel production from Waste Cooking Oil (WCO). Keywords:Biodiesel, Waste Cooking Oil, Copper doped Zinc Oxide, Transesterification. IntroductionFossil fuels such as petroleum, coal and natural gas are the major sources of increased pollution level. Studieshave shown that biodiesel being less polluting, non-toxic and biodegradable; it can be used directly in most diesel engines without much engine modifications. Biodiesel is commonly produced by transesterification of lipids, animal fats, grease and waste cooking oils [1,2,3,4,5,6,7,8,9,10,11,12,13].Catalyst plays an important role in transesterification reactions. Homogeneous catalysts result in the formation of soap which makes more complication in the reaction and also in the product separation. Heterogeneous catalysts has its own benefits such as ease of separation, easy recovery and can potentially be re-used. Finally, all these benefits leads to a reduced production cost [1,2,3,6]. Due to the nanodimension and morphological structure, the nanocatalyst composites provides higher catalytic activity [14,15]. This research work aims at conversion of WCO into biodiesel using the transesterification process with CZO nanocomposite as heterogeneous catalysts. Since nano particles have a large surface-to-volume ratio compared to bulk materials, they are attractive to use as catalysts for the transesterification reactions. Materials and methods MaterialsCupric sulphate, Zinc sulphate, Sodium carbonate were the chemicals used for synthesizing nanocatalyst. Methanol was used for transesterification reactions. All chemicals were of analytical grade purchased from Merck, India. Transesterification was carried out using Waste Cooking Oil, Copper doped Zinc Oxide nanoca...

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Biodiesel production from waste cooking oil via alkali catalyst and its engine test

Cited by 367 publications

References 18 publications

Combustion and performance characteristics of CI (compression ignition) engine running with biodiesel

Combustion and performance characteristics of CI (compression ignition) engine running with biodiesel

LHV predication models and LHV effect on the performance of CI engine running with biodiesel blends

Transesterification of Waste Cooking Oil Catalysed by Crystalline Copper Doped Zinc Oxide Nanocatalyst

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