Preparation of biodiesel from waste cooking

The diesel engine is widely used to provide the power source on-land transportation vehicles, marine vessels and power plants. Iodine value was calculated by following equation: Saponification was done with different stoichiometric amount of NaOH. After dissolving the soap, the fatty acid contents were separated in separatory funnel.

Aqueous sodium hydroxide solution was prepared by dissolving required amount of dry sodium hydroxide NaOH in ml water. In the present study biodiesel was prepared from WCO by three-step method to increase the reaction yield and minimize the methanol molar ratio.

Therefore, it is necessary to explore ways to reduce production costs of biodiesel.

After separation, hot water wash was given for removing mineral acid from the fatty acid. Non-edible plant oil has been found to be promising crude oil for the production of biodiesel. The different molar ratio of soap to hydrochloric acid was given and the ratio was optimized.

In Bangladesh the potentiality of producing oil source is investigated and it is found that the production potential is not too high. Biodiesel FAME is a clean-burning fuel derived from vegetable oils or animal fat and is an advantageous alternative to fossil diesel fuel because of its biodegradability, bio-renewable nature, very low sulfur content and toxicity, low volatility or flammability, good transport and storage properties, higher cetane number, and its salutary atmospheric CO2 balance for production [ 4 ].

Silica gel was used during esterification reaction to adsorb water produced in esterification reaction. The use of non-edible oil for biodiesel production compared with edible oil is very significant in developing countries because of the tremendous demand of edible oil as food and they are far too expensive to be used as fuel at present [ 56 ].

The high cost of biodiesel is mainly due to the cost of virgin vegetable oil. Moreover we have extreme limitation of land. Esterification of FFA When acidification was completed, produced FFA was reacted with different stoichiometric amount of methanol under reflux with vigorous stirring at different temperature, catalyst concentration, different molar ratio of methanol to FFA and different time.

However, a diesel engine also emits various forms of pollutants in gaseous, liquid and solid phases to the environment. Fatty acid methyl esters FAME show great potential as diesel substitutes, and they are known to be sources of biodiesel [ 3 ].

All the chemicals were used as analytical reagent grade. The reaction time and different molar ratio of oil to sodium hydroxide solution through saponification process were optimized. From Figure 1, it can be seen that, the optimum molar ratio of oil to NaOH was 1: The oil was filtered and its properties were measured.

Analytical Methods for Oiul and Biodiesel To determine FFA of sample and biodiesel, 1mL of oil and biodiesel were weighed in gmthen dispersed in 5mL diethyl-ether solution followed by titration against 0.

So additional land acquiring is also impossible for the production of oil seeds.

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FAME is not only currently useful as a diesel fuel additive, but it is also marketed as green industrial degreasing solvents; as diluents for pigments, paints, and coatings, and for military engine fuel applications [ 4 ]. As we have a very large population, the edible oil sources cannot be employed for the biodiesel production.

Saponification value SV was determined by method described by Jeffery et al. Characterization of WCO The properties of WCO such as viscosity, specific gravity, moisture content, saponification value, pour point, cloud point etc were measured and presented in Table 1.

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 [ 8 ].

The reaction was stopped by cooling the reaction volume. The concern is increasing worldwide for environmental protection and for the conservation of non-renewable natural resources. Saponification 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.

Saponification was done by the method described above. The iodine value IV was determined by titrating the sample with 0. Therefore, it is not surprising that the biodiesel produced from vegetable oil for example, pure soybean oil costs much more than petroleum based diesel.

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.

The glycerin formed during transesterification is also important because of its numerous applications in the food, cosmetic, and pharmaceutical sectors.

The FFA content was determined by titration method. After preparing the biodiesel from WCO various physico-chemical properties were measured and compared with the standard biodiesel. Additionally regressive analyzes study was done by the application of factorial design based on viscosity to find out the better reaction conditions.Acid-Catalyzed Preparation of Biodiesel from Waste Vegetable Oil - Free download as PDF File .pdf), Text File .txt) or read online for free.

Biodiesel is a diesel fuel that is made by reacting vegetable oil (cooking oil) with other common chemicals. Biodiesel may be used in any diesel automotive engine in its pure form or blended with petroleum-based diesel.

No modifications are required, and the result is a less-expensive, renewable, clean-burning fuel. To overcome the disadvantages of the acid catalyzed process or pretreatment, the homogeneous Lewis acid catalyst (carboxylic salts) was used to synthesize biodiesel from waste cooking oil.

However, the reaction temperature was high (T = °C), but the conversion was relatively low (90%). Preparation, Characterization and Application of Zeolite-based Catalyst for Production of Biodiesel from Waste Cooking Oil Maryam Hassani 1, Ghasem D Najafpour.

1 *, Maedeh Mohammadi. 1. and. Mahmood Rabiee. 2. 1. preparation of zeolite-based catalyst poly vinyl. 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.

PREPARATION OF BIODIESEL FROM WASTE COOKING OIL In partial fulfillment of the requirements for the award of the degree of Bachelor of Engineering in Mechanical.

Preparation of biodiesel from waste cooking
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