Anyhow, SVO must also be treated, especially WVO that many people use with SVO systems because they are cheap and sometimes even free. When using WVO, food particles, impurities and water must be removed from it. It will also need to be deacidified. Biodiesel producers think: "If I need to do all that, I might as well make biodiesel instead". But SVO supporters will claim it requires a lot less treatment than biodiesel.
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