The author gives informational and relevant titles different from the other, as divided into two parts. The aim of this study is defined well in introduction part but in the result section, the author cannot tell scientifically, why glycerol and biodiesel are not separated using NaOH and KOH catalyst as compared to methoxide catalyst. However, many research articles are available on using KOH or NaOH as catalyst give better conversion in shorter time and low-temperature. Authors have explained in Table-2 that 55 and 65-degree temperature yield was decreased due to saponification but the author can give the answer why it was increasing at 75-degree temperature. I think the Taguchi, response surface method and AAN are the best methods as compared to conventional optimization. The author makes good integrity throughout MS and all biodiesel properties are in the range of ASTM.