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 136
- Downloads 0
Phenology, distribution and cultivation of endangered medicinal plant species (Dorema aucheri Boiss), in Kohgiluyeh-va-Boyerahmad province, Iran
Dorema aucheri Boiss is one of the endemic and endangered plant species of Iran which has been extensively used as food and medicinal herb for many years. Present study was conducted to investigate the phenology, distr...
Comparative foraging behavior of eastern honeybee, (Apis cerana F) and western honeybee, (Apis mellifera carnica) in pollinating pear and apricot flowers in Taleghan, Iran
The Eastern honeybee, (Apis cerana), is indigenous to Asia and is an important pollinator for Asian ecosystems; the Western honeybee, (Apis mellifera), has been introduced to Asia because of its high honey yields. Europ...
Impact of concrete block bin on wheat storage losses and food security
Farmers in Pakistan face many storage problems leading to huge losses in the stored wheat. It is therefore, utmost important to protect our food reserves and prevent losses caused by pest’s infestation and improper sto...
Microorganism’s application strategy for bio-phytoremediation of heavy metal: A review
Phytoremediation is a group of technologies that use plants to reduce, remove, de- grade, or immobilize environmental toxins, primarily those of anthropogenic origin, with the aim of restoring area sites to a condition...
Origin of water salinity in Annaba aquifer system, North-Eastern Algeria
The Annaba area hosts in its underground a water potential of great importance. In fact, it is one of the Algerian plains where groundwater is subject to over-pumping. Moreover, the expansion of farmlands and the develop...