In processing, treat hydrogenated oil the same as ordinary oil. 191 Biodiesel and your vehicle Food or fuel? 24 Do diesels have a future? See: Biodiesel in winter, Vegetable and animal fats and oils are triglycerides, made up of three fatty acid chains linked to a molecule of glycerol. -10 105 As vegetable oils cool, wax crystals form, and the oil goes cloudy. 1212 Olive oil Biodiesel in Hong Kong 57 273 Talking about the weather Biodiesel resources on the Web Lard Biodiesel processors 110 to 115 As of end-2011, there is no such thing as biodiesel from algae apart from a few laboratory samples. In the high temperatures commonly found in internal combustion engines, the process is accelerated and the engine can quickly become gummed-up with the polymerised oil. 2689 Under normal conditions, plant 4 to 7 pounds of seed per acre. Unsaturated fatty acids have carbon-to-carbon double bonds. -16 Shortening is made from many kinds of vegetable oils, as well as lard and tallow. 2246 The higher the IV, the more unsaturated (the greater the number of double bonds) the oil and the higher is the potential for the oil to polymerise. With some oils, engine failure can occur in as little as 20 hours. 35 to 40 Ethanol resources on the Web 53 110 Shortening is made from many kinds of vegetable oils, as well as lard and tallow. Low-IV oils have higher cetane values and are more efficient fuels than high-IV oils, but they also have higher melting points and are usually solid at room-temperature. 2638 93 Free heating! Mutton tallow -6 -8 -2.5 It even varies for the same type of oil: new food-grade rapeseed or canola oil is usually "winterized" so that it doesn't cloud in the fridge and put people off. In saturated fatty acids all the carbon atoms are linked to two hydrogen atoms and there are no double bonds. 19 http://news.mongabay.com/bioenergy/2007/01/in-depth-look-at-biofuels-from-algae.html The more solid it is when you get it the more difficult it is to handle, but once you heat it for processing it melts and behaves like any other oil. Food or fuel? coconut 51 See: Biodiesel in winter 37 cocoa (cacao) For making biodiesel, treat shortening the same as hydrogenated oil. FOOLPROOF biodiesel process When oils are hydrogenated hydrogen atoms are added to the carbon-to-carbon double bonds in unsaturated fatty acids, which then become saturated. Hope springs eternal, but don't hold your breath. 534 Sesame 50 kg 1190 soybean The table below lists various oils and some of their properties. "Hype surrounding some alternative energy startups sometimes disregards the laws of physics and other fundamental principles," he says. Beef tallow Oils and their melting points and Iodine Values -- standard testing olive As of end-2011, there is no such thing as biodiesel from algae apart from a few laboratory samples. See: How much fuel can we grow? Coconut oil, palm oil, tallow and lard won't do, rapeseed or canola, corn or cottonseed are much better. In a critique of algal biodiesel developments in May 2007, Dr Benemann wrote: "Microalgae biofuels generally, and algae biodiesel production specifically, is still a long-term Research and Development goal (likely about 10 years), that will require at least as much funding as the ASP, if not more, and success is, as for any R&D effort, rather uncertain.". Melting Range deg C Higher iodine numbers do not refer to the amount of iodine in the oil, but rather the amount of iodine needed to "saturate" the oil, or break all the double bonds. Generally speaking, an IV of less than about 25 is required if the neat oil is to be used for long term applications in unmodified diesel engines and this limits the types of oil that can be used as fuel. Biodiesel in Hong Kong -10 51 Palm Fruit 20 kg However this process also increases the melting point of the oil and turns the oil into margarine. Search the Journey to Forever website – click HERE, En español We supported many early small-scale attempts to make biodiesel from algae, but none succeeded, because of multiple problems. 482 37 sunflower 178 21 Biodiesel and your vehicle Biodiesel made with ethanol usually has a lower CFPP than biodiesel made with methanol. Ethyl -8 See also Oxidation and polymerisation Groundnut Kernel 42 kg -- From "Waste Vegetable Oil as a Diesel Replacement Fuel" by Phillip Calais, Environmental Science, Murdoch University, Perth, Australia, and A.R. En español -- Biocombustibles, biodiesel -12 As you increase the number of double bonds in a fatty acid, you reduce that ability for oils to gain a conformation that would make them solid, so they remain liquid. Get pass4sure dumps and braindumps demos for asvab study guide and scwcd with 100% guaranteed success. The Biopact report says: Storing biodiesel. 635 For making biodiesel, treat shortening the same as hydrogenated oil. 23 536 81 Australia – Retail; Europe & Middle East – Retail and Distribution 20 to 45 The amount of iodine in grams absorbed per 100 ml of oil is then the IV. http://www.libertyvegetableoil.com/products.html New genetics enable growers to realize a higher yield per acre with some of the strongest canola in the world. Or select none and use the plant criteria below." Cross-linking at this site can then occur and the oil irreversibly polymerises into a plastic-like solid. Cetane Numbers hazelnut Low-IV oils have higher cetane values and are more efficient fuels than high-IV oils, but they also have higher melting points and are usually solid at room-temperature. Different terms are used for this -- melting point (MP), cloud point (CP), cold filter plugging point (CFPP), and pour point (PP). - Note: Chinese Tallow (Sapium sebiferum, or Triadica sebifera) is also known as the "Popcorn Tree". Approx. melting point As you increase the number of double bonds in a fatty acid, you reduce that ability for oils to gain a conformation that would make them solid, so they remain liquid. Coconut oil, palm oil, tallow and lard won't do, rapeseed or canola, corn or cottonseed are much better. 178 This is why it is time to have a look at the possible reasons as to why algae biofuels are being talked about, but don't seem to get off the ground. Biofuels He further stated that canola yield per acre can be increased with hybrid seeds and better crop management practices. 240 Jamie Kanner. Iodine http://tech.groups.yahoo.com/group/oil_from_algae/ Vegetable oil yields and characteristics Biodiesel processors 14 If you want to use an SVO system in a cold climate, you need a system configured to deal with the CFPP factor, and you need oil with a low CFPP. Next: Oil yields and characteristics - Page 2 -16 Plant spring canola at 5 to 8 pounds of seed per acre. A 50-bushel-an-acre canola crop worth $10 a bushel grosses $500 an acre, netting Hagmann $100. Washing 115 to 124 It matters with both SVO systems using straight vegetable oil as fuel and with biodiesel, but more so with SVO systems. Oils and esters characteristics litres oil/ha 779 Margarine is best avoided. 93 It can save you thousands of dollars in heating bills. 151 High-IV oils are more unsaturated with more double-bonds (linseed oil, tung oil, some fish oils and other "drying oils"). Palm kernel oil That means that the more double bonds, the lower the cloud point because they resist solidifying at lower temperatures. "Semi-drying" oils like soy and sunflower are also prone to oxidation and polymerisation, though not as quickly as the drying oils. corn (maize) Coconut oil, palm oil, tallow and lard won't do, rapeseed or canola, corn or cottonseed are much better. It increases the risk of filters plugging in cold weather or even just cool weather and is best used as summer fuel. Biofuels Library Is ethanol energy-efficient? 1059 Oil or biodiesel from algae is not a do-able option, there are no tried-and-trusted methods, it is not a ready-to-use technology. 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