The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
S. R. Jayaram - One of the best experts on this subject based on the ideXlab platform.
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Vegetable Oils as a potential cutting fluid—An evolution
Tribology International, 2010Co-Authors: Y.m. Shashidhara, S. R. JayaramAbstract:Abstract A review is made here to understand the application of Vegetable Oils as potential metal working fluids. The study highlights the contributions from more than sixty authors on Vegetable based Oils as emerging environmental friendly cutting fluids. The performance of these Oils as emulsions and straight Oils for various materials and machining conditions are reported. The study focuses on the evolution of Vegetable Oils as cutting fluids in manufacturing sector, particularly, metal cutting and metal forming. It is observed that, most of the contributions are directed to develop and commercialise the cutting fluids based on Vegetable Oils. However, soyabean, sunflower and rapeseed seem to possess the relevant properties as a potential cutting fluid.
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Vegetable Oils as a potential cutting fluid an evolution
Tribology International, 2010Co-Authors: Y.m. Shashidhara, S. R. JayaramAbstract:Abstract A review is made here to understand the application of Vegetable Oils as potential metal working fluids. The study highlights the contributions from more than sixty authors on Vegetable based Oils as emerging environmental friendly cutting fluids. The performance of these Oils as emulsions and straight Oils for various materials and machining conditions are reported. The study focuses on the evolution of Vegetable Oils as cutting fluids in manufacturing sector, particularly, metal cutting and metal forming. It is observed that, most of the contributions are directed to develop and commercialise the cutting fluids based on Vegetable Oils. However, soyabean, sunflower and rapeseed seem to possess the relevant properties as a potential cutting fluid.
Y.m. Shashidhara - One of the best experts on this subject based on the ideXlab platform.
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Vegetable Oils as a potential cutting fluid—An evolution
Tribology International, 2010Co-Authors: Y.m. Shashidhara, S. R. JayaramAbstract:Abstract A review is made here to understand the application of Vegetable Oils as potential metal working fluids. The study highlights the contributions from more than sixty authors on Vegetable based Oils as emerging environmental friendly cutting fluids. The performance of these Oils as emulsions and straight Oils for various materials and machining conditions are reported. The study focuses on the evolution of Vegetable Oils as cutting fluids in manufacturing sector, particularly, metal cutting and metal forming. It is observed that, most of the contributions are directed to develop and commercialise the cutting fluids based on Vegetable Oils. However, soyabean, sunflower and rapeseed seem to possess the relevant properties as a potential cutting fluid.
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Vegetable Oils as a potential cutting fluid an evolution
Tribology International, 2010Co-Authors: Y.m. Shashidhara, S. R. JayaramAbstract:Abstract A review is made here to understand the application of Vegetable Oils as potential metal working fluids. The study highlights the contributions from more than sixty authors on Vegetable based Oils as emerging environmental friendly cutting fluids. The performance of these Oils as emulsions and straight Oils for various materials and machining conditions are reported. The study focuses on the evolution of Vegetable Oils as cutting fluids in manufacturing sector, particularly, metal cutting and metal forming. It is observed that, most of the contributions are directed to develop and commercialise the cutting fluids based on Vegetable Oils. However, soyabean, sunflower and rapeseed seem to possess the relevant properties as a potential cutting fluid.
Ayhan Demirbas - One of the best experts on this subject based on the ideXlab platform.
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Recovery of Gasoline and Diesel Range Hydrocarbons From Waste Vegetable Oils
Petroleum Science and Technology, 2015Co-Authors: Ayhan DemirbasAbstract:In general, Vegetable Oils are triglycerides, which consist of 18-carbon fatty acids. There is no boiling point of Vegetable Oils, because Oils start to decompose when heated to a certain temperature after removing smoke. The smoke point is the temperature at which the oil is decomposed and where possibly toxicological relevant compounds are formed. There is a very small amount of hydrocarbons in the content of Vegetable Oils. Thermal cracking of triglycerides has been carried out for over 100 years, with a recent focus on converting fats and Oils to liquid fuels. Catalytic pyrolysis and cracking processing have the potential to become an important process for conversion of Vegetable Oils into gasoline and diesel range hydrocarbons. Decarboxylation and deoxygenation mainly occur during pyrolysis and cracking reactions.
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New Biorenewable Fuels from Vegetable Oils
Energy Sources Part A-recovery Utilization and Environmental Effects, 2010Co-Authors: Ayhan DemirbasAbstract:Abstract World annual petroleum consumption and Vegetable oil production is about 4.018 and 0.107 billion tons, respectively. Vegetable Oils from bio-renewable oil seeds can be used when mixed with diesel fuels. Vegetable Oils can be used as fuels for diesel engines, but their viscosities are much higher than usual diesel fuel and require modifications of the engines. Different ways have been considered to reduce the viscosity of Vegetable Oils, such as dilution, microemulsification, pyrolysis, catalytic cracking, and transesterification. Compared with transesterification, pyrolysis process has more advantages. The liquid fuel produced from pyrolysis has similar chemical components to conventional petroleum diesel fuel. Vegetable Oils can be converted to a maximum of liquid and gaseous hydrocarbons by pyrolysis, decarboxylation, deoxygenation, and catalytic cracking processes.
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biodiesel production facilities from Vegetable Oils and animal fats
Energy Sources Part A-recovery Utilization and Environmental Effects, 2007Co-Authors: Ayhan Demirbas, S KarsliogluAbstract:Abstract Biodiesel is a renewable fuel that can be produced from Vegetable Oils, animal fats, and used cooking oil including triglycerides. Biodiesel, an alternative biodegradable diesel fuel, is derived from triglycerides by transesterification with methanol and ethanol. Concerns about the depletion of diesel fuel reserves and the pollution caused by continuously increasing energy demands make biodiesel an attractive alternative motor fuel for compression ignition engines. There are four different ways of modifying Vegetable Oils and fats to use them as diesel fuel, such as pyrolysis (thermal cracking), dilution with hydrocarbons (blending), emulsification and transesterification. The most commonly used process is transesterification of Vegetable Oils and animal fats. The transesterification reaction is affected by molar ratio of glycerides to alcohol, catalysts, reaction temperature, reaction time and free fatty acids and water content of Oils or fats. In the transesterification, free fatty acids and wa...
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NEW OPTIONS FOR CONVERSION OF Vegetable Oils TO ALTERNATIVE FUELS
Energy Sources Part A: Recovery Utilization and Environmental Effects, 2006Co-Authors: Ayhan Demirbas, Huseyin KaraAbstract:Biodiesel from transesterification of Vegetable Oils is an excellent alternative fuel. There is, however, a need to develop a direct process for conversion of Vegetable Oils into gasoline-competitive biodiesel and other petroleum products. Methyl esters of Vegetable Oils have several outstanding advantages among other new-renewable and clean engine fuel alternatives. The purpose of the transesterification process is to lower the viscosity of Vegetable oil. Compared to No. 2 diesel fuel, all of the Vegetable Oils are much more viscous, whereas methyl esters of Vegetable Oils are slightly more viscous. The methyl esters are more volatile than those of the Vegetable Oils. Conversion of Vegetable Oils to useful fuels involves the pyrolysis and catalytic cracking of the Oils into lower molecular products. Pyrolysis produces more biogasoline than biodiesel fuel. Soap pyrolysis products of Vegetable Oils can be used as alternative diesel engine fuel. The soaps obtained from the Vegetable Oils can be pyrolyzed in...
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Biodiesel production from Vegetable Oils by supercritical methanol
Journal of Scientific and Industrial Research, 2005Co-Authors: Ayhan DemirbasAbstract:Transesterification of Vegetable Oils in supercritical methanol are\ncarried out without using any catalyst. Methyl esters of Vegetable Oils\nor biodiesels have several outstanding advantages among other\nnew-renewable and clean engine fuel alternatives and can be used in any\ndiesel engine without modification. The most important variables\naffecting the methyl ester yield during the transesterification reaction\nare molar ratio of alcohol to Vegetable oil and reaction temperature.\nCompared to no. 2 Diesel fuel, all Vegetable Oils are more viscous,\nwhile the methyl esters of Vegetable Oils are slightly more viscous.\nBiodiesel has become more attractive because of its environmental\nbenefits. The cost of biodiesel, however, is the main obstacle to\ncommercialization. With cooking Oils as raw material, viability of a\ncontinuous transesterification process and recovery of high quality\nglycerol as a biodiesel by-product are primary options to be considered\nto lower the cost of biodiesel. Supercritical methanol has a high\npotential for both transesterification of triglycerides and methyl\nesterification of free fatty acids to methyl esters for diesel fuel\nsubstitute. In supercritical methanol transesterification method, yield\nof conversion rises 95% in 10 min. Viscosity of Vegetable Oils\n(27.2-53.6 mm(2)/s) get reduced in Vegetable oil methyl esters\n(3.59-4.63 mm(2)/s). The flash point values of Vegetable oil methyl\nesters are highly lower than those of Vegetable Oils. All increase in\ndensity from 860 to 885 k-/m(3) for Vegetable oil methyl esters\nincreases the viscosity from 3.59 to 4.63 mm(2)/s.
M.s. Murthy - One of the best experts on this subject based on the ideXlab platform.
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straight Vegetable Oils usage in a compression ignition engine a review
Renewable & Sustainable Energy Reviews, 2010Co-Authors: R D Misra, M.s. MurthyAbstract:The ever increasing fossil fuel usage and cost, environmental concern has forced the world to look for alternatives. Straight Vegetable Oils in compression ignition engine are a ready solution available, however, with certain limitations and with some advantages as reported by many researchers. A comprehensive and critical review is presented specifically pertaining to straight Vegetable Oils usage in diesel engine. A detailed record of historical events described. Research carried out specifically under Indian conditions and international research work on the usage of straight Vegetable Oils in the diesel engine is separately reviewed. Many researchers have reported that straight Vegetable Oils in small percentage blends with diesel when used lower capacity diesel engines have shown great promise with regards to the thermal performance as well exhaust emissions. This has been explained in detail. Finally based on the review of international as well as Indian research a SWOT analysis is carried out. The review concludes that there is still scope for research in this area.
R D Misra - One of the best experts on this subject based on the ideXlab platform.
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straight Vegetable Oils usage in a compression ignition engine a review
Renewable & Sustainable Energy Reviews, 2010Co-Authors: R D Misra, M.s. MurthyAbstract:The ever increasing fossil fuel usage and cost, environmental concern has forced the world to look for alternatives. Straight Vegetable Oils in compression ignition engine are a ready solution available, however, with certain limitations and with some advantages as reported by many researchers. A comprehensive and critical review is presented specifically pertaining to straight Vegetable Oils usage in diesel engine. A detailed record of historical events described. Research carried out specifically under Indian conditions and international research work on the usage of straight Vegetable Oils in the diesel engine is separately reviewed. Many researchers have reported that straight Vegetable Oils in small percentage blends with diesel when used lower capacity diesel engines have shown great promise with regards to the thermal performance as well exhaust emissions. This has been explained in detail. Finally based on the review of international as well as Indian research a SWOT analysis is carried out. The review concludes that there is still scope for research in this area.