Influence of the flocculating agent in sedimentation and performance of a non flocculent strain of Zymomonas mobilis in the ethanol production process |
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Authors: | Flávia P. Puget Marcos R.T. Halasz Giulio Massarani Tito L.M. Alves |
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Affiliation: | (1) Programa de Engenharia Química, COPPE/Universidade Federal do Rio de Janeiro RJ, C.P. 68502, 21945-970 Rio de Janeiro, RJ, Brazil |
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Abstract: | 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. |
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Keywords: | biomass separation ethanol production flocculation sedimentation Zymomonas mobilis |
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