An approach to the economics of two vegetable oil-based biofuels in Spain

Dorado, M.P.; Cruz, Francisco Jose T. Da; Palomar, J.M.; López, Francisco J.

doi:10.1016/j.renene.2005.06.010

Cited by 111 publications

(42 citation statements)

References 13 publications

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“…8 Various researchers have shown that the use of vegetable oil and their derivatives is economical and competitive compared to mineral diesel. 9,10 In this work, the vegetable (hazelnut) oils and their blends with a petroleum diesel fuel are studied as a function of temperature and compositions. The various blends of hazelnut oil and standard diesel fuel were prepared and their important properties were evaluated and compared with those of standard diesel.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation effects of blend hazelnut oil on compression ignition engine performance characteristics and emission

Can

2012

Journal of Renewable and Sustainable Energy

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Studies on alternative fuels are important due to the worldwide depletion and accelerated exploitation of oil reserves. In this study, experiments were conducted to study the performance, emission, and specific fuel consumption of a compression ignition (CI) engine using hazelnut oil-based fuels. The main problems posed when using vegetable oil in a compression ignition engine are poor atomization, carbon deposits, ring sticking, etc. This is because of the high viscosity and low volatility of vegetable oil. The blending of hazelnut oil with diesel fuel has been shown to be an effective method to reduce engine problems associated with the high viscosity of hazelnut oil. A number of tests are conducted in a CI engine using different fuel mix ratios. To validate the result, the trials are repeated three times. The engine works at a fixed full load, but at different speeds, i.e., 1000 rpm, 1500 rpm, 2000 rpm, 2500 rpm, 3000 rpm, and 3500 rpm. The performance, specific fuel consumption, and the emission characteristics of exhaust gases of the engine are analyzed and compared. Measurements have indicated a negligible loss of engine power, a slight increase in specific fuel consumption, and a reduction in engine nitrogen oxides, hydrocarbons, and soot emission using blends of hazelnut oil with diesel fuel as compared to diesel fuel. The reduction in engine soot emission has been observed to increase with the increase of hazelnut oil percentage in the fuel blend.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation effects of blend hazelnut oil on compression ignition engine performance characteristics and emission

Can

2012

Journal of Renewable and Sustainable Energy

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“…[3][4][5][6][7] A study in Spain showed that the cost of oil acquisition and preparation is 0.47 euro/ kg of the total cost of 0.69 euro/kg when using Ethiopian mustard as the raw material, and the cost of the raw material alone is 0.15 euro/kg of the total cost of 0.37 euro/kg when using recycled olive oil (and before selling by-products). 8 Due to the high cost of raw materials, some researchers have concluded that the use of biodiesel from fresh oil is not profitable without tax exemptions or government subsidies. 9,10 Currently, soybean oil is the most commonly used feedstock for making biodiesel in the United States.…”

Section: Making Biodiesel From Recycled Cooking Oil Generated In Campmentioning

confidence: 99%

Research and Solutions: Making Biodiesel from Recycled Cooking Oil Generated in Campus Dining Facilities

Agnew

Chai

et al. 2009

Sustainability: The Journal of Record

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Made from vegetable oil, waste oil, or animal fats, biodiesel fuel is renewable and nearly carbon neutral; it requires little engine modification, and over time can reduce the United States' dependence on foreign oil. Over the past few decades, the production of biodiesel has increased significantly. Here at the University of Cincinnati (UC), biodiesel is being generated from fryer oil from campus dining halls to reduce diesel use and enhance sustainability on the campus. A secondary goal is to use this process as a real world classroom for students, K-12 teachers, and interested community members wishing to optimize conversion of waste cooking oil to biodiesel. The production of biodiesel at the UC is accomplished via transesterification, whereby waste fryer oil and methanol are converted, with the aid of the catalyst sodium hydroxide, to methyl esters, or biodiesel, and glycerol. The pretreatment, titration/pilot test, full-scale production, and purification processes are quantitatively described here, as are the estimated costs and potential uses of biodiesel on campus.

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“…Raw material is the main contributor to biodiesel production costs [24]. The choice of raw material depends mainly on its availability and cost.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Transesterification of Waste Cooking Oil with Mg-Al Hydrotalcite Using Response Surface Methodology

et al. 2018

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Nowadays, biodiesel has become a very promising alternative to fossil diesel fuel, regarding environmental concerns and fuel resource depletion. Biodiesel is usually produced through homogeneous or heterogeneous transesterification of different fatty raw materials. Although main research has been carried out with homogenous catalysts, heterogeneous catalysts may be of interest due to ease of recovery and recycling, as well as readiness for continuous processing. In this work, calcined Mg-Al hydrotalcite (HT) was used for the heterogeneous transesterification of waste cooking oil. Three reaction parameters, namely, reaction time, amount of catalyst, and methanol-to-oil molar ratio, were optimized by means of Response Surface Methodology (RSM) at constant temperature (65 • C), using a Box-Behnken design. Optimal fatty acid methyl ester (FAME) content (86.23% w/w FAME/sample) was predicted by the model with an R-squared value of 98.45%, using 3.39 g of HT (8.5% w/w oil) and an 8:1 methanol-oil molar ratio, for a duration of 3.12 h. It was observed that calcination of HT, while avoiding the previous washing step, allowed the presence of chemical species that enhanced the effect of the catalyst. It can be concluded from this field trial that calcined and nonwashed Mg-Al hydrotalcite may be considered an effective basic catalyst for the production of biodiesel from waste cooking oil. Also, RSM proved to be a useful tool for predicting biodiesel yield.

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An approach to the economics of two vegetable oil-based biofuels in Spain

Cited by 111 publications

References 13 publications

Experimental investigation effects of blend hazelnut oil on compression ignition engine performance characteristics and emission

Experimental investigation effects of blend hazelnut oil on compression ignition engine performance characteristics and emission

Research and Solutions: Making Biodiesel from Recycled Cooking Oil Generated in Campus Dining Facilities

Optimization of the Transesterification of Waste Cooking Oil with Mg-Al Hydrotalcite Using Response Surface Methodology

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