In this work, high frequency and low power ultrasound without external heating source and
mechanical stirring in biodiesel production were studied. Transesterification of soybean oil …

Depleting conventional fossil fuels and growing greenhouse gases have fascinated the
researcher's heed for the use of green and clean fuels. Thereby, such fuels can be obtained …

Ultrasonic techniques have been widely used in biodiesel production, since the acoustic
cavitation is a phenomenon capable of accelerating potentially the transesterification …

This paper presents an ultrasonic method capable of being applied in a process line for
monitoring the soybean oil transesterification with methanol, catalysed by KOH. Four …

Considering the gradual reduction of fossil fuel resources and their role in environmental
issues, biodiesel-derived products have received much attention as fuel additives to …

Biodiesel is an evolution toward the attempt to substitute fossil fuel by renewable biomass.
Typically, blends of diesel and biodiesel are commercialized instead of pure biodiesel for …

Ultrasound has been widely used as a technological alternative way to analyse
noninvasively an assortment of materials. It includes liquids with dissimilar physical …

This work describes the development and tests of a new ultrasonic spectrometer for liquids
based on the use of commercial cuvettes for sample handling. The spectrometer operates in …

This paper introduces a method for measuring solute particle size in solution. The working
principle of this method is to characterize the particle size by using the ultrasonic extended …

A two-port local resonating (TPLR) method for thin-film Lamb wave sensor is proposed.
Based on properties of multi-modes analyzed by numerical simulation and experimental …