A comparative study on the production of ethanol from lignocellulosic biomass by chemical and biological methods


Abstract:
Ethanol derived from non-edible biomass is a renewable and clean source of energy. It is independent of food industry and is economically feasible. The first-generation biofuel or bioethanol is still not a very convenient source of energy, as it prominently depends upon the availability of grains. The main objective of this work is to develop an industrious and efficient process to produce ethanol from lignocellulosic biomasses, such as wood and leaf in a lab scale. Two processes were compared with this study. The first process involved an alkaline pretreatment of the powdered biomass followed by dilute acid hydrolysis. The second process involved an alkaline treatment followed by direct hydrolysis of the biomass by a fungal species obtained from rotting wood. Following hydrolysis, fermentation was performed using Saccharomyces cerevisiae and the ethanol produced was measured. The process methodologies performed here are liable to be scaled up easily. The final study determines the factors, such as temperature, strength of reagents and retention time to maximise the ethanol production.

Keywords:
Cellulosic ethanol; Biofuel; Lignocellulosic; Biomass; Hydrolysis

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How to cite this article:
Shaheed SM, Rohit JP, Madhan R, Selvakumar K. A comparative study on the production of ethanol from lignocellulosic biomass by chemical and biological methods. Journal of Biological and Information Sciences. 2012. 1 (2). 17-21.
Available from: http://archive.biolim.org/jbis/read/BOJ001A0005.