Biodiesel disadvantages

I learned a lot about the production, structure, use, advantages and disadvantages of biodiesel. Also, I consider it to be important that I learned about our environment and its protection. I especially learned about how companies sell environmentally friendly products and how naive we can be if there is the syllable bio in it. (Student from Germany). 

I have learned about the advantages and disadvantages of biodiesel, about interests of pressure groups and how to evaluate their opinions by considering their particular interests, and how to develop an opinion and make up my own mind. (Student from Germany). 

Biodiesel production using the biocatalyst lipase avoids the disadvantages of the alkaline process without the need for subsequent wastewater treatment (Taher et al., 2011). Additionally, lipases can operate in mild conditions with a high substrate selectivity. M. miehei, R. oryzae, C. antarctica, and P. cepacia are all common lipases found to be capable of catalyzing oil transesterification in order to produce biodiesel. 

Esters of levulinic acid produced from either methanol or ethanol are under active development as blend components in diesel formulations. These esters are similar to the biodiesel fatty acid methyl esters (FAME) now used in European low emission diesel formulations. FAME has certain disadvantages as automotive fuel components in diesel due to cold flow properties (24) and gum... 

Although biodiesel is an excellent source of fuel, it has some disadvantages which include relatively poor cold flow properties and dilficulty in maintaining fuel quality during long-term storage. The latter is a matter of oxidation stability and will be discussed in this part. 

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