Sunday, May 4, 2008
4-30

Determination of biodiesel physicochemical properties  from six raw materials: an comparative study

Nívea De Lima da Silva, Oscar Javier Celis Ariza, Cesar Benedito Batistella, André Luiz Jardini, Maria Regina Wolf Maciel, and Rubens Maciel Filho. Department of Chemical Process – School of Chemical Engineering, State University of Campinas, Cidade Universitária, Campinas, 13083970, Brazil

Biodiesel is an alternative diesel  fuel derived from a renewable feedstock such as vegetable oil or animal fat. It is biodegradable  and produces lesser CO2, sulfur dioxide and unburned hydrocarbons than petroleum-based fuel. The physicochemical properties of biodiesel such as density, heat capacities and enthalpy may influence in the combustion and exhaustive emission. This work presents a comparative study of  heat capacities, enthalpy and density of biodiesel from six raw materials. The biodiesel were made using bioethanol and sodium hydroxide as catalyst in laboratory scale. The raw materials used were crude soybean oil, castor oil, palm oil, animal fat, waste frying oil and coconut oil. The properties were measured at normal atmospheric pressure in the temperature range from 283 to 423K.

 


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