Today in class we finished cleaning the bottles by getting rid of any remaining sludge (glycerin, and fat), and pouring the usable bio diesel back into the bottle. We did this in a groups of two. One person squeezed the sludge out while the other person would wait until all the gunk came out. Then the bottle would have only bio diesel in it. The bottle was then put right side up on the counter.
What is a catalyst? A substance that speeds up a chemical reaction without changing its properties. The catalyst we used was Sodium Hydroxide.
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