Methanol is generally applicable on industrial level because of
its lower cost. But, the notable point is the methanol is nonrenewable as mainly it is acquired from fossil fuel resources like
natural gas thus biodiesel prepared with help of methanol cannot
be termed as renewable in nature. Therefore, use of ethanol is
quite promising because it is derived from agricultural wastes for
instance biomass via fermentation technique. Apart from that,
ethanol is more soluble in oil compared to methanol and therefore
minimises mass transfer limitation during transesterification
reaction[71]