A Review on Pyrolysis of Protein Rich Microalgae Biomass
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 7
Abstract
The population explosion and rapid urbanization currently being experienced in both the developed and developing economies of the world calls for enormous quantities of fuel and this high rate of fuel consumption is heavily dependent upon conventional non-renewable energy resources. It is well known that these conventional resources would be extinguished in the near future and moreover cause a lot of problems related to pollution, climatic changes, etc. To tackle this precarious energy deficit scenario and to reduce the negative environmental impacts, alternative fuels from renewable energy sources are gaining more and more attention. Biofuel, an alternate renewable fuel, is derived usually from biodegradable feedstock like vegetable oils, animal fats, etc. However, various kinds of protein based waste products can also be utilized for the production of biofuels, which has an added advantage of minimizing waste and reducing environmental pollution. Proteins are large macromolecules consisting of one or more long chain amino acids. This review paper focuses on cost effective technologies and processes particularly focusing on the utilization of protein rich biomass and pyrolysis to convert biomass into useful liquid biofuels and by-products. Pyrolysis is a process in which the waste materials are burned in the absence of oxygen or air at elevated temperatures which results in the thermal cracking of long chain protein molecules into smaller sub chains. A few studies suggests that pyrolysis of protein-rich microalgae can also produce bio-oil that, in some respects, is superior to bio-oil from lignocellulosic biomass. It was also reported that bio-oil from microalgae was characterized by lower oxygen content and a higher heating value than bio-oil from lignocellulosic biomass. Studies conducted by Miao et al. reported bio-oil yields of 18%, 24% and 57.9% for pyrolysis of Chlorella protothecoides, Microcystis aeruginosa and heterotrophic C. protothecoides, respectively. In this review paper an analytical study on the pyrolysis of high protein content biomass is performed on the basis of a number of studies.
Authors and Affiliations
Krishnakumar P, Dr. S. Suresh, Dr. Prashant Baredar
Keywords
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