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Some algae species are 50% or more lipid oil by weight. This oil may be pressed from the algae and refined into diesel. The process for extracting algal oil, at its simplest level, resembles pressing an olive. Up to 75% from the oil might be squeezed from algae using a simple mechanical press. Hexane might be used being a solvent to raise extraction up to 95%. Once extracted, the oil is refined through transesterification. A catalyst including sodium hydroxide is combined with alcohol to make biodiesel and glycerol.
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In fact, Torossian and senior members of his team recently debated how much political talk ought to be allowed among 5W's 90 employees. They banned companywide e-mails meant for political candidates but decided that off-the-clock break room debates are just fine. Says Torossian, "People have a very right to express what they need, within reason."
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