Ultrasound Batch & Continuous Reactor for Biodiesel Production

 Research Process Flow Diagram

Research Process Flow Diagram

BurrowX replicated and improved upon a recent American Chemical Society (ACS) publication to use Ultrasound technology to speed up the rate of reaction.

Biodiesel is produced in multi-stage batch reactors in which mass transfer is a rate limiting step. Mass transfer rates may be accelerated with ultrasound (US). The paper compared the performance of continuous flow US reactors, a Rosett US cell reactor, and a batch US reactor to a conventional mechanically stirred batch reactor. The Rosett cell reactor combines acoustic cavitation and turbulence and achieved biodiesel yields greater than 90% in 5 min, whereas the same level of performance in the conventional reactor took more than 90 min.

The most significant result of this work lies in achieving biodiesel yields greater than 90% after a single passage of the reagents in a continuous flow reactor in the presence of pulsed ultrasound. This corresponds to a reaction time of 18 s and a rate 300 times faster than the conventional process.

BurrowX improved upon this research to achieve 90% recovery using 70% of the reagents used in the original publication.

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