Simultaneous microwave extraction and synthesis of fatty acid methyl ester from the oleaginous yeast Rhodotorula glutinis
| Autor: | Christopher J. Chuck, Rhodri W. Jenkins, Rod J. Scott, Lisa A. Sargeant, Daniel Lou-Hing, Rebecca Dean |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
biodiesel
yeast Industrial and Manufacturing Engineering Catalysis chemistry.chemical_compound Organic chemistry Electrical and Electronic Engineering Fatty acid methyl ester Civil and Structural Engineering chemistry.chemical_classification Biodiesel Chromatography catalysis Mechanical Engineering Extraction (chemistry) Fatty acid Building and Construction Transesterification Pollution General Energy chemistry Biofuel extraction biofuel Methanol Microwave |
| Zdroj: | Chuck, C, Lou-Hing, D, Dean, R, Sargeant, L, Scott, R J & Jenkins, R 2014, ' Simultaneous microwave extraction and synthesis of fatty acid methyl ester from the oleaginous yeast Rhodotorula glutinis ', Energy, vol. 69, pp. 446-454 . https://doi.org/10.1016/j.energy.2014.03.036 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/j.energy.2014.03.036 |
| Popis: | Microbial lipids have the potential to substantially reduce the use of liquid fossil fuels, though one obstacle is the energy costs associated with the extraction and subsequent conversion into a biofuel. Here we report a one-step method to produce fatty acid methyl esters (FAME) from Rhodotorula glutinis by combining lipid extraction in a microwave reactor with acid-catalysed transesterification. The microwave did not alter the FAME profile and over 99% of the lipid was esterified when using 25 wt% H2SO4 over 20 minutes at 120 °C. On using higher loadings of catalyst, similar yields were achieved over 30 seconds. Equivalent amounts of FAME were recovered in 30 seconds using this method as with a 4 hour Soxhlet extraction, run with the same solvent system. When water was present at less than a 1:1 ratio with methanol, the main product was FAME, above this the major products were FFA. Under the best conditions, the energy required for the microwave was less than 20% of the energy content of the biodiesel produced. Increasing the temperature did not change the energy return on investment (EROI) substantially; however, longer reaction times used an equivalent amount of energy to the total energy content of the biodiesel. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect