Effect of Sodium Alginate Concentration on Size of Yeast Immobilized Particle and on Production of Bio-ethanol in a Packed-Bed Fermenter

Autoři

  • M. Selvaraj Dept. of Chemical Engineering, MIT
  • B. S. V. S. R. Krishna Dept. of chemical engineering, MIT Manipal

Klíčová slova:

Biofuels, sodium alginate, calcium alginate, immobilization, packed-bed reactor

Abstrakt

Biofuels are important because they replace the petroleum fuels or fossil fuels and especially ethanol and butanol contribute greatly to the mitigation of greenhouse gases emission, provide clean and sustainable energy source and reduce the consumption of crude oil. Current ethanol production processes using agricultural crops such as sugarcane and corn are well known, i.e., biochemical pathway and thermo-chemical pathway. However, in the biochemical pathway, the reactors used for fermentation have to be improved from a classical well-mixed reactor such as batch fermenter and fed-batch fermentor to the continuous reactors due to the following reasons, i.e., product inhibition and wash out, etc. An attempt has been made to improve the reactor design using continuous packed-bed reactor with baker's yeast as microorganism and this was immobilized in calcium alginate beads (particles). In the present study, we have conducted experiments to identify the suitable bead size and suitable concentrations of sodium and calcium alginate solutions for better sugar conversion or more ethanol yield in batch reactor. The same beads are used for continuous packed-bed study. The results are compared. The continuous packed-bed reactor gave better conversions with retention time of 5 h. Keywords: Biofuels, sodium alginate, calcium alginate, immobilization, packed-bed reactor  

Stažení

Publikováno

2013-01-09

Číslo

Vol 2 No 3 (2012)

Sekce

Research Articles

Licence

Declaration and Copyright Transfer Form

(to be completed by authors)

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

·         I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.

·         I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).

·         I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.

·          I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

_______________

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.