Influence of the flocculating agent in sedimentation and performance of a non flocculent strain of Zymomonas mobilis in the ethanol production process.
The influence of the flocculating agent was studied in the performance (measured by microbial growth and ethanol production) of a non flocculent strain of Zymomonas mobilis, as well as the potentiality of the sedimentation process in the separation of the biomass from the fermentation broth. Among the flocculating agents studied, it was verified that both tannin and the polyelectrolyte yielded good results with regard to cellular performance. However, with regard to sedimentation tannin is more adequate to be used in processes involving Zymomonas mobilis.
Puget
F P
FP
Programa de Engenharia Química, COPPE/Universidade Federal do Rio de Janeiro RJ, Brazil.
Halasz
M R
MR
Massarani
G
G
Alves
T L
TL
D000180:Acrylic Resins / Q000494:pharmacology; D000534:Alum Compounds / Q000494:pharmacology; D000431:Ethanol / Q000378:metabolism*; D005427:Flocculation; D047348:Hydrolyzable Tannins / Q000494:pharmacology; D007218:Industrial Microbiology / Q000379:methods*; D017355:Zymomonas / Q000187:drug effects*; D000099166:Polyacrylamides
D000180:Acrylic Resins; D000534:Alum Compounds; D000431:Ethanol; D047348:Hydrolyzable Tannins; D000099166:Polyacrylamides; C041524:aluminum sulfate