This document describes the manufacturing process for biodiesel from waste cooking oil. It involves a 4-step process: 1) testing the free fatty acid content to determine the appropriate conversion process, 2) heating the oil to convert it to biodiesel using a methoxide catalyst, 3) separating the biodiesel and glycerol layers, and 4) washing the biodiesel to remove impurities until the pH is neutral. The biodiesel is then tested for viscosity, copper corrosion, and flash point to ensure it meets standards before being implemented as an alternative fuel to address increasing crude oil prices and need for renewable fuels.

1. BIO-DIESEL
Manufacturing method from Waste Cooking Oil
By- Asheesh Padiyar & Manas Likhit
R.V College of Engineering
Dept of Chemical Engineering
2012-2016

2.  As crude oil price reach a new high, the need for developing
alternative fuels has become acute
 Alternate fuel should be economically attractive in order to
compete with the currently available fossil fuels
Fossil fuels over ??

3. Alternative ??
 Electric automobiles
 Solar powered automobiles
 Fuel cell powered automobiles

4. Procedure
 Step 1- Free fatty acid test (FFA)
 If FFA>4% Double Stage process
 If FFA <4%Single Stage process
The end point

5.  Step 2 – The conversion
 Heating the sample up to 60º C with constant stirring .
 Addition of methoxide catalyst and
stirred
Heating The catalyst

6.  Step 3 – The separation
 Transfer of the mixture into a separation funnel.
 Allowing it to separate under gravity.
The separating The separated phases

7.  Step 4- Washing
 Glycerol separated.
 Biodiesel heated to 60˚ C and washed with fine spray of water.
Washing

8.  Repeated washed till the pH of the water after washing
reaches the initial value.
The final product

9.  Viscosity test:
 Viscometer dipped in
water preheated to 40˚ C
 Viscosity is found out by
finding time taken by liquid
to travel between two marked
points
Tests:
The viscometer

10.  Copper strip corrosion test:
 Biodiesel heated to 60˚C
and copper strip placed in it
 Heating done for 3 hours
 Copper strip removed after
3 hours
Copper strip corrosion
test
Copper strip after

11.  Flash point test:
 Biodiesel heated to 100˚C and
checked for flash point at
different temperatures using
ignition source.

12. Advantages ??
 Low carbon emission
 Renewability
 Source material
 Cost
Disadvantages ??
 Low energy output
 High cost of refining
 Massive quantity of water needed

13. Asheesh Padiyar Manas Likhit
Chemical Engineering(2012-2016)
R.V College of Engineering

14. Thank you ……. 