As stated in the procedure section, the reactor was continuously
operated for 20 min, with samples collected every 2 min. The composition
of mixture is presented for comparison with the original
composition of MCPO. Twelve tests were carried out in analyzing
the conditions for reducing the acid value of the MCPO. Table 2
shows the experimental design matrix and the results of these
tests. It was found that when these mixtures flow through the outlet
port of the ultrasonic reactor, the acid value of the esterified oil
ranges from 8.681 to 1.213 mgKOH g1
.