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Prewashing Biodiesel with 5% Water

Introduction A 5% water prewash is a way to give your biodiesel a preliminary wash after the reaction is finished but BEFORE draining off the glycerol byproduct. Performing a 5% water prewash stops the transesterification reaction dead in its tracks by drawing much of...

The 3/27 Conversion Test

Introduction: Over the past year, there’s been a quiet revolution in biodiesel homebrewing quality control. On July 7, 2006 a new test was introduced, with experiments to support it, to the infopop forum community – the Jan Warnquist or 3/27 test. This...

Drying Washed Biodiesel

INTRODUCTION: After washing your biodiesel, it will usually have a slightly hazy or cloudy appearance to it, this is because there are micro droplets of water still in suspension in your just washed fuel, biodiesel has an ability to keep this water in suspension and...

Why We Titrate to Make Biodiesel

When making our own biodiesel out of waste vegetable oil (WVO), we need to know how much to adjust the amount of NaOH/KOH required to neutralize the free fatty acids (FFAs) it contains. We determine the percentage of FFAs in a given sample of oil by using an indicator...

Biodiesel Recipe Calculator

Enter Input here   Oil How Much Oil will you use? LitersGallons Methanol use this much methanol for each unit of oil % Lye the base amount of catalyst needed g/L Titration Enter the value you determined by titration g/L The Recipe     Metric US Oil   Liters...

Carboy Methoxide Mixer system

In the past homebrewers used an electric mixer of some kind to mix together methanol and lye. The drawbacks were complexity, and the obvious safety issues around static, sparks, and fumes. But if you just add lye to methanol at the same time that you start heating...