Comments on: Is castor oil the best feedstock for biodiesel? http://www.switchfuel.com/is-castor-oil-the-best-feedstock-for-biodiesel/ Just another WordPress weblog Sun, 04 Jul 2010 22:51:03 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: rob_harwell http://www.switchfuel.com/is-castor-oil-the-best-feedstock-for-biodiesel/comment-page-1/#comment-290 rob_harwell Wed, 24 Jun 2009 05:20:22 +0000 http://www.switchfuel.com/is-castor-oil-the-best-feedstock-for-biodiesel/#comment-290 If I had a daughter, and I went into her room and esterified her, and then said I would enjoy it if I could get away with it, would you challenge me? Okay, draw. es⋅ter⋅i⋅fy   /ɛˈstɛrəˌfaɪ/ Show Spelled Pronunciation [e-ster-uh-fahy] Show IPA Pronunciation –verb (used with object), verb (used without object), -fied, -fy⋅ing. Chemistry. to convert into an ester. If I had a daughter, and I went into her room and esterified her, and then said I would enjoy it if I could get away with it, would you challenge me? Okay, draw. es⋅ter⋅i⋅fy   /ɛˈstɛrəˌfaɪ/ Show Spelled Pronunciation [e-ster-uh-fahy] Show IPA Pronunciation

–verb (used with object), verb (used without object), -fied, -fy⋅ing. Chemistry. to convert into an ester.

]]> By: Nata T http://www.switchfuel.com/is-castor-oil-the-best-feedstock-for-biodiesel/comment-page-1/#comment-289 Nata T Tue, 23 Jun 2009 09:46:22 +0000 http://www.switchfuel.com/is-castor-oil-the-best-feedstock-for-biodiesel/#comment-289 nope. Since diesel engines are run with excess O2, the extra O in the molecule does nothing. nope. Since diesel engines are run with excess O2, the extra O in the molecule does nothing.

]]> By: Bob http://www.switchfuel.com/is-castor-oil-the-best-feedstock-for-biodiesel/comment-page-1/#comment-1877 Bob Mon, 22 Jun 2009 16:21:03 +0000 http://www.switchfuel.com/is-castor-oil-the-best-feedstock-for-biodiesel/#comment-1877 The first 2 sentences are correct. The next 2, which are the conclusions from the facts, are all wrong. Extra oxygen is not an advantage, it is a disadvantage. It results in less energy per gallon. Petroleum diesel has no oxygen, that is why it has more energy than biodiesel. If you add even more oxygen you get less energy. In addition, the hydroxy fatty acid causes high viscosity. You cannot make an in-spec biodiesel from castor oil because the viscosity will be too high. It is the high viscosity that makes castor oil valuable in lubricants, but for biodiesel it is not good The first 2 sentences are correct. The next 2, which are the conclusions from the facts, are all wrong. Extra oxygen is not an advantage, it is a disadvantage. It results in less energy per gallon. Petroleum diesel has no oxygen, that is why it has more energy than biodiesel. If you add even more oxygen you get less energy. In addition, the hydroxy fatty acid causes high viscosity. You cannot make an in-spec biodiesel from castor oil because the viscosity will be too high. It is the high viscosity that makes castor oil valuable in lubricants, but for biodiesel it is not good

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