Canada adopts stricter emissions standards for ships; further alignment with US on air emissions
BASF plans production of butanediol from renewable feedstock using Genomatica technology

Study concludes microbial lipids can be commercially viable source of biodiesel

Researchers from Wageningen University, The Netherlands, have concluded that “although quite some work still has to be done”, microbial lipids—i.e., lipids from yeasts and fungi—have the potential to be tomorrow’s source of biodiesel. Their analysis is published in the journal Biofuels, Bioproducts and Biorefining.

In the search for new transport fuels from renewable resources, biodiesel from microbial lipids comes into view. We have evaluated the lipid yield and energy use of a process for production of biodiesel from agricultural waste using lipid-accumulating yeast and fungi. We included different bioreactors for submerged and solid-state fermentation in our evaluation.

Using existing kinetic models, we predict lipid yields on substrate between 5% and 19% (w/w), depending on the culture system. According to the same models, improvement of the yield to 25–30% (w/w) is possible, for example by genetic modification of the micro-organisms. The net energy ratio of the non-optimized systems varies between 0.8 and 2.5 MJ produced per MJ used; energy use for pre-treatment and for oxygen transfer are most important. For the optimized systems, the net energy ratio increases to 2.9–5.5 MJ produced per MJ used, which can compete very well with other biofuels such as bioethanol or algal biodiesel.

—Meeuwse et al.

Resources

  • Meeuwse, P., Sanders, J. P.M., Tramper, J. and Rinzema, A. (2013), Lipids from yeasts and fungi: Tomorrow’s source of biodiesel?. Biofuels, Bioprod. Bioref. doi: 10.1002/bbb.1410

Comments

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Working...
Your comment could not be posted. Error type:
Your comment has been posted. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.

Working...

Post a comment

Your Information

(Name is required. Email address will not be displayed with the comment.)