A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 3 years ago

Hey guys. Could you please help me? I've done the transesterfication step for biodiesel production. However, due to limited amount of lipid available, the reaction was carried out using only 62mg of lipid and excess methanol and catalyst was used. Please read below:

  • This Question is Closed
  1. Kayne
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    12ml of methanol and 0.125g of catalyst (Sodium hydroxide) was used. For the removal of impurity to get the pure biodiesel, we had to evaporate the methanol at 80 degrees and pass the biodiesel through magnesol. However, while evaporating the excess of methanol, the sample has dried out and some brownish precipitate was observed, among some green pigments, on the wall of the container and when methanol was added, a yellowish solution was obtained. Could you suggest what happened while evaporating the methanol? What could have happened to the biodiesel? Thank you for your help.

  2. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.