. 2021 Aug 19;78:105709. doi: 10.1016/j.ultsonch.2021.105709

Table 3.

Conversion rate and electric power from the equipment by conventional and ultrasound transesterification methods.

Method	Conversion rate [%]	Apparatus	Electric power [W]	Time [min]	Time [h]	Electric Power Consumption [W∙h]
Conventional [200 rpm; 40 °C]*	87.0	MS^a/HB^b	70; 1200	10	0,166	211.7
	88.3			40	0,666	846.7
Conventional [520 rpm; 40 °C]*	90.8	MS^a/HB^b	74; 1200	10	0,166	212.3
	91.3			40	0,666	849.3
Conventional [800 rpm; 40 °C]	91.8	MS^a/HB^b	77.5; 1200	10	0,166	212.9
	92.1			40	0,666	851.7
Ultrasound [1 MHz; 9 W]	80.5	US^c	70	20	0,333	23.1
				40	0,666	46.2
Ultrasound [3 MHz; 5 W]	79.5	US^c	70	20	0,333	23.1
				40	0,666	46.2

a- Mechanical Stirrer; b- Heating Bath; c - Ultrasound equipment.

* Data taken from the literature [31].