A review on catalytic biodiesel production
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2014, Vol 5, Issue 4
Abstract
The industrialization of societies and as the result, the increase of demand for fuel in the world and speculations on the reduction of fossil fuels and on the other hand, the issue of world health emphasizes on the necessity of substituting renewable and clean energy, so biodiesel as the best substitute for diesel fuels is common. In general, three ways are used to produce biodiesel including pyrolysis, micro-emulsification and transesterification among which transesterification is known as the most usual and common way. The catalysts used in transesterification are divided into three groups of acidic, alkaline and enzymatic catalysts in which the acidic and alkaline catalysts in turn divide into two groups of heterogeneous and homogeneous. The Transesterification reaction using acidic catalysts involves more time for the reaction and high cost. The alkaline catalysts produce an appropriate amount of product in moderate operational conditions and show a better performance in comparison with the other catalysts. These catalysts have a limitation in use for raw material containing high free fatty acids. The way of using Lipase catalysts is the most viable method that can be applied, however it requires high costs. Given today's high total cost as the main obstacle for producing biodiesel, using animal fats and waste oils as raw material and using the heterogeneous catalysts and preferably renewable ones is suggested so as to reduce the total cost.
Authors and Affiliations
A. Gorji, R. Ghanei
Keywords
Related Articles
- EP ID EP37962
- DOI -
- Views 163
- Downloads 0
Investigation of otolith in Priacanthus tayenusin persian gulf and oman sea
This study aimed to investigation of otolith in Priacanthus tayenusin Persian Gulf and Oman Sea. Sampling lasted from September 2011 to December 2012. During this period 5 samples of Priacanthus tayenus were cut and st...
The effect of cold stress on H2O2 and MDA contents in barely genotypes
During the course of cold acclimation, a key process associated with plant cold tolerance, some biochemical components may be up- or down-regulated. In carrying out this experiment, the objective was to investigate the...
Agaricus bernardii and A. maleolens (section Duploannulatae, Agaricaceae) in the Bulgarian mycobiota: diversity, distribution, morphology and ecology
This paper summarizes the available data of Agaricus bernardii and A. maleolens in Bulgaria. Review of the available previous records is made and new findings are reported. The article brings closer taxonomic profile,...
Role of nanotechnology in removing metal ions from waste water: A brief review
Clean and affordable water to meet basic human needs has become a majestic challenge to the current century. All around the world, water supply thrash about to keep up with the rapid demand growth, which is aggravated by...
Investigation of the effect of Islamic values, beliefs, and traditions on organizational agility in institutional offices of national Iranian South oilfields company
Today, agility is considered as a paradigm which indicates the ability of corporations in implementation of competitive activities, a contest in which instability is the main index. In an agile organization which faces...