FFA was prepared from WCO by saponification followed by acidification. Saponification was done by the method described above. Saponification was done with different stoichiometric amount of NaOH. After saponification and acidification FFA was produced. The results are represent in Figure 1. From Figure 1, it can be seen that, the optimum molar ratio of oil to NaOH was 1:2 and reaction time was 2.0h.
Glycerol is a very useful co-product of transesterification. Once the contamination by ethanol (or methanol) and spent catalyst is removed, it can be used in the preparation of cosmetics, toiletries and pharmaceuticals. It is also used to make for paints.
"Synthesis of Biodiesel from Waste Cooking Oil." ..
Karanja (Pongamia pinnata), which is one of the source of biodiesel, widely spread all over tropical Asia, Australia, India and locally distributed throughout the state of Maharashtra( India) along the bank of rivers, very common near sea coast in tidal and beach forests in Konkan, along Deccan rivers.
Key words: ANOVA, Basic catalyst, Biodiesel, FAME, Karanja (Pongamia pinnata), KOME (Karanja oil methyl ester), Taguchi method, Transesterification.
Biocatalytic Production of Biodiesel from Vegetable …
The high cost of biodiesel is mainly due to the cost of virgin vegetable oil. Therefore, it is not surprising that the biodiesel produced from vegetable oil (for example, pure soybean oil) costs much more than petroleum based diesel. Therefore, it is necessary to explore ways to reduce production costs of biodiesel. In this sense, methods that permit minimizing the costs of the raw material are of special interest. The use of waste frying oil, instead of virgin oil, to produce biodiesel is an effective way to reduce the raw material cost because waste frying oil is estimated to be about half the price of virgin oil .
the production of biodiesel from vegetable ..
Three-step method consists of Saponification followed by acidification to produce FFA and finally esterification of FFA to produce biodiesel .
Ester synthesis by transesterification - Organic chemistry
In Bangladesh the potentiality of producing oil source is investigated and it is found that the production potential is not too high. As we have a very large population, the edible oil sources cannot be employed for the biodiesel production. Moreover we have extreme limitation of land. So additional land acquiring is also impossible for the production of oil seeds. The oil seed source that can be used for biodiesel production in Bangladesh are WCO, mustard oil, sesame oil, coconut oil, peanut oil, linseed oil, castor oil, nahor oil etc. .
Process of biodiesel synthesis ..
For saponification process required amount of WCO was taken in a three necked flask and mixed with different stoichiometric amount of aqueous sodium hydroxide solution. The mixture was heated under reflux with vigorous stirring at temperature of 100°C for different time. The reaction was stopped by cooling the reaction volume. Aqueous sodium hydroxide solution was prepared by dissolving required amount of dry sodium hydroxide (NaOH) in 60-90ml water. The reaction time and different molar ratio of oil to sodium hydroxide solution through saponification process were optimized.