Xem 1-20 trên 26 kết quả Vegetable oil
  • The alternative fuels that are derived from non-fossil source are very promising fuels for the future. Catalytic cracking of vegetable oil sludge is an advanced method for obtaining of bio- fuels. The huge waste in the vegetable oil manufacture could be converted to bio-fuel. Cracking of vegetable oil sludge by HY catalyst using MAT5000 instrument is a precious method for studying this catalytic cracking reaction. By catalytic cracking, the LPG gas, gasoline product, LCO and HCO products are also formed of vegetable oil sludge.

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  • Edible oils are mainly vegetable oils which have been subjected to several processes to removed undesirable constituents. In order to make them suitable for human consumption, most edible oils are subjected to refining processes, such as neutralization, bleaching and deodorization. Among edible oils, only virgin olive oil (a natural juice obtained by olive pressing), can be consumed without refining. Edible oils are characterized by a wide range of physical and chemical prop-erties, since their composition depend on the type of oil (Rossell1991).

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Vegetable Oil-Based Hyperbranched Thermosetting Polyurethane/Clay Nanocomposites

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  • Vegetable oil and grease polluted wastewater caused many problems in wastewater plan such as physical blockages in sewer, pump, screens and filter distributor arms. Its occurrence in effluent increase COD significantly even its amount is not high. In this paper, bioremediation was investigated to remove vegetable oil and grease. Four strains were positive with lipid degrading test. Cell morphology and optimal conditions such as pH, temperature anf lipid concentration was found.

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  • As early as the beginning of the 20th century Rudolf Diesel proposed vegetable oil as fuel for his engine.1 A short time later, before and during World War Two, vegetable oil was examined in “up-to-date” diesel engines. In 1940 first trials with vegetable oil methyl and ethyl esters were carried out in France and, at the same time, scientists in Belgium were using palm oil ethyl ester as a fuel for buses.2 In 1973, the oil crisis refocused attention on and interest for local energy sources.

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  • The phenomenon of friction has been part of daily life since the beginning of human existence. It is no surprise that some of the earliest human activities involved the reduction of friction when it was wasteful, or the use of friction when it could be beneficial. The first category includes the use of vegetable oils and animal fats as lubricants, as well as the use of rolling motion to take advantage of the resulting low resistance to movement.

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  • Energy is defined as the ability to do work. Energy is found in different forms, such as heat, light, motion, and sound. There are many forms of energy, but they can all be put into two categories: kinetic and potential. Electrical, radiant, thermal, motion, and sound energies are kinetic; chemical, stored mechanical, nuclear, and gravitational energies are potential forms of energy

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  • 2 World Biofuel Scenario Muhammed F. Demirbas contents Abstract.................................................................................................................... 13 2.1 Introduction .................................................................................................... 14 2.2 Biomass Liquefaction ..................................................................................... 15 2.3 Biomass Pyrolysis .......................................................................................... 16 2.4 Biomass Gasification ......................................

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  • 4 Production of Biofuels with Special Emphasis on Biodiesel Ayhan Demirbas contents Abstract.................................................................................................................... 45 4.1 Introduction .................................................................................................... 45 4.2 Vegetable Oils as Diesel Fuels .......................................................................46 4.3 Biodiesel ......................................................................................................... 47 4.

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  • 13 Biodiesel Production Technologies and Substrates Arumugam Sakunthalai Ramadhas contents Abstract.................................................................................................................. 183 13.1 Introduction ................................................................................................ 184 13.2 Vegetable Oil Characterization .................................................................. 184 13.3 Alkaline Catalyst Transesterification ......................................................... 186 13.3.1 Alcohol to Oil Molar Ratio ..............

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  • 14 Lipase-Catalyzed Preparation of Biodiesel Rachapudi Badari Narayana Prasad and Bhamidipati Venkata Surya Koppeswara Rao contents Abstract.................................................................................................................. 199 14.1 Introduction .................................................................................................. 199 14.2 Pretreatment of Oil and Lipase for Efficient Alcoholysis ............................200 14.3 Lipase-Catalyzed Alcoholysis of Oil With and Without the Solvent Medium ..............................................

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  • GoPower tabletop press for around US$1,000. Although the press usually comes with a 240V/50 cycle electric motor, you can buy the press with a 120V/60 cycle motor from the U.S. distributor. The press looks like a powerful juicer. To operate it, pour the oilseed into the funnel and wait for the vegetable oil to pour out of the bottom. The meal oozes out of the side of the press. The Three Ways to Use Vegetable Oil as a Fuel Diesel engines that are found in cars, trucks, generators, boats, buses, trains, planes, pumping stations, tractors, and agricultural equipment can all...

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  • 19 Biodiesel ProductionIts from Mahua Oil and Evaluation in an Engine Sukumar Puhan, Nagarajan Vedaraman, and Boppana Venkata Ramabrahmam contents Abstract.................................................................................................................. 267 19.1 Introduction .................................................................................................. 268 19.1.1 Worldwide Research on Vegetable Oil as Fuel ............................... 268 19.1.2 Mahua (Madhuca indica) Oil for Biodiesel Production ................. 268 19.1.3 Transesterification .......

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  • Geochemical – Geochemical surveys that monitor the reservoir characteristics have routinely been used in the oil and gas industry and have been successfully adopted for use in monitoring carbon sequestration. Initially, reservoir samples (solids, liquids, and gases) are collected to establish a baseline prior to CO2 injection; tests can be repeated later to monitor CO2 migration (using tracers), or to assess geochemical changes, as CO2 saturated brine reacts with the reservoir formation.

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  • The planned biofuels increase will be a boon for the farm sector, which will see production of biofuel crops jump from today's 320,000 hectares to more than 1.2 million hectares by 2007. Three-quarters of current biofuel production is rapeseed-based "diester," a vegetable oil-sourced diesel fuel known as "bio-diesel" in other parts of Europe, while the remainder is comprised of ethanol sourced from a variety of crops, including beetroot, sugar cane, corn, potato, and wheat, according to government data.

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  • Lesser amounts of lipases are used in oleochemical transformations (Bornscheuer, 2000). Lipases can play an important role in the processing of g-linolenic acid, a polyunsaturated fatty acid (PUFA); astaxanthine, a food colorant; methyl ketones, flavor molecules char- acteristic of blue cheese; 4-hydroxydecanoic acid used as a precursor of g-decalactone, a fruit flavor; dicarboxylic acids for use as prepolymers; interesterification of cheaper glycerides to more valuable forms (e.g., cocoa butter replacements for use in chocolate manufacture) (Undurraga et al.

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  • Petroleum-based industrial products have gradually replaced products derived from biological materials. However, biologically based products are making a comeback--because of a threefold increase in farm productivity and new technologies. Biobased Industrial Products envisions a biobased industrial future, where starch will be used to make biopolymers and vegetable oils will become a routine component in lubricants and detergents.

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  • Rising prices at the pump affect everybody – workers and farmers; truck drivers and restaurant owners. Businesses see it impact their bottom line. Families feel the pinch when they fill up their tank. For Americans already struggling to get by, it makes life that much harder. Demand for oil in countries like China and India is only growing, and the price of oil will continue to rise with it. That’s why we need to make ourselves more secure and control our energy future by harnessing all of the resources that we have available and embracing...

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  • The market prospects for palm oil are closely related to the world market for all oils and fats. The demand for food fats and oils is expected to increase at an average annual rate of 2.7%, ranging from 1.6% in developed to 4% in developing countries. Since 1970, production has increased annually by an average of 4.2%, with palm oil produc- tion growing at an average of 13% up to 1977 and expected to grow by 7% per annum from 1977 to 1985. At present palm oi l represents about 10% of the world's production of fats and oils, but it...

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  • After studying this chapter you will be able to understand: Classify simple and complex lipids. Identify waxes, triglycerides, phospholipids, steroids, prostaglandins, and terpenes; explain how unsaturations affect the properties of fats and oils. Compare the properties of saturated fats with those of polyunsaturated oils and partially hydrogenated vegetable oils; predict the reactions of lipids under basic hydrolysis and with standard organic reagents.

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