How the quality of biodiesel can be improved?give suggesitions.?

Question

High iodine value and viscosity are major problems in the quality of biodiesel.

Answer 1

Don't use biodiesel at all. Use air or water.

Answer 2

You can switch from transesterification to hydroprocessing to produce the biodiesel.  Biodiesel produced by hydroprocessing is indistinguishable from conventional diesel except for the fact that it is essentially sulfur free.

Answer 3

Two actions to be planned together:

1- The quality of biodiesel can be improved by hydrotreating to lower the iodine value and the viscosity. Hydrotreating is a relatively non-expensive Catalytic  process, well-developed and established in the petroleum refining industry.

2-Blending with petroleum diesel by the most appropriate and economic proportion.